[{"abstract":[{"lang":"eng","text":"This paper presents a broadband sampler IC using a current-mode integrated-and-hold-circuit (IHC) as sampling circuit. The sampler IC exhibits 1dB large-signal bandwidth of 70 GHz and excellent signal integrity on hold-mode. With a sampling rate of 5 GS/s, it achieves effective number of bits (ENOB) of 6 bit at 9.9 GHz input frequency. The chip was fabricated in a 130 nm SiGe BiCMOS technology from IHP."}],"publication":"Asia-Pacific Microwave Conference (APMC)","citation":{"chicago":"Wu, Liang, Maxim Weizel, and Christoph Scheytt. “70 GHz Large-Signal Bandwidth Sampler Using Current-Mode Integrate-and-Hold Circuit in 130 Nm SiGe BiCMOS Technology.” In <i>Asia-Pacific Microwave Conference (APMC)</i>, 2019. <a href=\"https://doi.org/10.1109/APMC46564.2019.9038239\">https://doi.org/10.1109/APMC46564.2019.9038239</a>.","ama":"Wu L, Weizel M, Scheytt C. 70 GHz Large-signal Bandwidth Sampler Using Current-mode Integrate-and-Hold Circuit in 130 nm SiGe BiCMOS Technology. In: <i>Asia-Pacific Microwave Conference (APMC)</i>. ; 2019. doi:<a href=\"https://doi.org/10.1109/APMC46564.2019.9038239\">10.1109/APMC46564.2019.9038239</a>","short":"L. Wu, M. Weizel, C. Scheytt, in: Asia-Pacific Microwave Conference (APMC), 2019.","bibtex":"@inproceedings{Wu_Weizel_Scheytt_2019, title={70 GHz Large-signal Bandwidth Sampler Using Current-mode Integrate-and-Hold Circuit in 130 nm SiGe BiCMOS Technology}, DOI={<a href=\"https://doi.org/10.1109/APMC46564.2019.9038239\">10.1109/APMC46564.2019.9038239</a>}, booktitle={Asia-Pacific Microwave Conference (APMC)}, author={Wu, Liang and Weizel, Maxim and Scheytt, Christoph}, year={2019} }","mla":"Wu, Liang, et al. “70 GHz Large-Signal Bandwidth Sampler Using Current-Mode Integrate-and-Hold Circuit in 130 Nm SiGe BiCMOS Technology.” <i>Asia-Pacific Microwave Conference (APMC)</i>, 2019, doi:<a href=\"https://doi.org/10.1109/APMC46564.2019.9038239\">10.1109/APMC46564.2019.9038239</a>.","apa":"Wu, L., Weizel, M., &#38; Scheytt, C. (2019). 70 GHz Large-signal Bandwidth Sampler Using Current-mode Integrate-and-Hold Circuit in 130 nm SiGe BiCMOS Technology. <i>Asia-Pacific Microwave Conference (APMC)</i>. <a href=\"https://doi.org/10.1109/APMC46564.2019.9038239\">https://doi.org/10.1109/APMC46564.2019.9038239</a>","ieee":"L. Wu, M. Weizel, and C. Scheytt, “70 GHz Large-signal Bandwidth Sampler Using Current-mode Integrate-and-Hold Circuit in 130 nm SiGe BiCMOS Technology,” Singapore , 2019, doi: <a href=\"https://doi.org/10.1109/APMC46564.2019.9038239\">10.1109/APMC46564.2019.9038239</a>."},"type":"conference","department":[{"_id":"58"}],"date_created":"2021-09-09T12:26:04Z","date_updated":"2025-02-13T12:09:17Z","title":"70 GHz Large-signal Bandwidth Sampler Using Current-mode Integrate-and-Hold Circuit in 130 nm SiGe BiCMOS Technology","status":"public","year":"2019","conference":{"end_date":"2019.12.13","location":"Singapore ","start_date":"2019.12.10"},"author":[{"full_name":"Wu, Liang","last_name":"Wu","first_name":"Liang","id":"30401"},{"full_name":"Weizel, Maxim","last_name":"Weizel","orcid":"https://orcid.org/0000-0003-2699-9839","first_name":"Maxim","id":"44271"},{"full_name":"Scheytt, Christoph","last_name":"Scheytt","orcid":"0000-0002-5950-6618 ","first_name":"Christoph","id":"37144"}],"doi":"10.1109/APMC46564.2019.9038239","user_id":"44271","language":[{"iso":"eng"}],"_id":"24049"},{"department":[{"_id":"58"}],"type":"conference","place":"Pisa, Italy","date_created":"2021-09-09T12:26:13Z","abstract":[{"text":"Targeting the feasible application of microwave RFID systems with MIMO reader technology for tracking small objects in multipath fading conditions, we present a fully integrated Analog Front-End (AFE) designed and fabricated in a standard 65-nm CMOS technology for low power passive RFID tags in the 5.8 GHz ISM band. A differential drive power scavenging unit is dimensioned to provide a 1.2 V rectified voltage resulting in a 1 V regulated voltage for the AFE while supplying a 50 μW load. Transistors with standard threshold voltage (V th ) have been used for implementation. Measurements of the fabricated circuits show a maximum Power Conversion Efficiency (PCE) of 71.8% at -12.5 dBm, and an input quality factor (Q-factor) of approximately 10.","lang":"eng"}],"citation":{"bibtex":"@inproceedings{Haddadian_Scheytt_2019, place={Pisa, Italy}, title={A 5.8 GHz CMOS Analog Front-End Targeting RF Energy Harvesting for Microwave RFIDs with MIMO Reader}, DOI={<a href=\"https://doi.org/10.1109/RFID-TA.2019.8892037\">10.1109/RFID-TA.2019.8892037</a>}, booktitle={IEEE International Conference on RFID Technology &#38; Application (RFID-TA) }, author={Haddadian, Sanaz and Scheytt, Christoph}, year={2019} }","ama":"Haddadian S, Scheytt C. A 5.8 GHz CMOS Analog Front-End Targeting RF Energy Harvesting for Microwave RFIDs with MIMO Reader. In: <i>IEEE International Conference on RFID Technology &#38; Application (RFID-TA) </i>. ; 2019. doi:<a href=\"https://doi.org/10.1109/RFID-TA.2019.8892037\">10.1109/RFID-TA.2019.8892037</a>","mla":"Haddadian, Sanaz, and Christoph Scheytt. “A 5.8 GHz CMOS Analog Front-End Targeting RF Energy Harvesting for Microwave RFIDs with MIMO Reader.” <i>IEEE International Conference on RFID Technology &#38; Application (RFID-TA) </i>, 2019, doi:<a href=\"https://doi.org/10.1109/RFID-TA.2019.8892037\">10.1109/RFID-TA.2019.8892037</a>.","chicago":"Haddadian, Sanaz, and Christoph Scheytt. “A 5.8 GHz CMOS Analog Front-End Targeting RF Energy Harvesting for Microwave RFIDs with MIMO Reader.” In <i>IEEE International Conference on RFID Technology &#38; Application (RFID-TA) </i>. Pisa, Italy, 2019. <a href=\"https://doi.org/10.1109/RFID-TA.2019.8892037\">https://doi.org/10.1109/RFID-TA.2019.8892037</a>.","short":"S. Haddadian, C. Scheytt, in: IEEE International Conference on RFID Technology &#38; Application (RFID-TA) , Pisa, Italy, 2019.","ieee":"S. Haddadian and C. Scheytt, “A 5.8 GHz CMOS Analog Front-End Targeting RF Energy Harvesting for Microwave RFIDs with MIMO Reader,” 2019, doi: <a href=\"https://doi.org/10.1109/RFID-TA.2019.8892037\">10.1109/RFID-TA.2019.8892037</a>.","apa":"Haddadian, S., &#38; Scheytt, C. (2019). A 5.8 GHz CMOS Analog Front-End Targeting RF Energy Harvesting for Microwave RFIDs with MIMO Reader. <i>IEEE International Conference on RFID Technology &#38; Application (RFID-TA) </i>. <a href=\"https://doi.org/10.1109/RFID-TA.2019.8892037\">https://doi.org/10.1109/RFID-TA.2019.8892037</a>"},"publication":"IEEE International Conference on RFID Technology & Application (RFID-TA) ","doi":"10.1109/RFID-TA.2019.8892037","user_id":"59648","_id":"24057","language":[{"iso":"eng"}],"date_updated":"2025-02-13T14:26:02Z","conference":{"end_date":"2019.09.27","start_date":"2019.09.25"},"author":[{"id":"59648","last_name":"Haddadian","first_name":"Sanaz","full_name":"Haddadian, Sanaz"},{"full_name":"Scheytt, Christoph","last_name":"Scheytt","first_name":"Christoph","orcid":"0000-0002-5950-6618 ","id":"37144"}],"year":"2019","title":"A 5.8 GHz CMOS Analog Front-End Targeting RF Energy Harvesting for Microwave RFIDs with MIMO Reader","status":"public"},{"user_id":"38254","doi":"10.1109/ICC.2019.8761960","publisher":"ICC 2019 - 2019 IEEE International Conference on Communications (ICC)","_id":"24059","language":[{"iso":"eng"}],"page":"1-6","date_updated":"2025-02-25T05:56:30Z","author":[{"full_name":"Amjad, Muhammad Sohaib","last_name":"Amjad","first_name":"Muhammad Sohaib"},{"full_name":"Tebruegge, Claas","first_name":"Claas","last_name":"Tebruegge"},{"first_name":"Agon","last_name":"Memedi","full_name":"Memedi, Agon"},{"full_name":"Kruse, Stephan","first_name":"Stephan","last_name":"Kruse","id":"38254"},{"id":"13256","first_name":"Christian","last_name":"Kress","full_name":"Kress, Christian"},{"id":"37144","orcid":"0000-0002-5950-6618 ","first_name":"Christoph","last_name":"Scheytt","full_name":"Scheytt, Christoph"},{"orcid":"0000-0002-1989-1750","last_name":"Dressler","first_name":"Falko","full_name":"Dressler, Falko","id":"48097"}],"conference":{"start_date":"2019.05.20","end_date":"2019.05.24"},"status":"public","title":"An IEEE 802.11 Compliant SDR-Based System for Vehicular Visible Light Communications","year":"2019","department":[{"_id":"58"}],"type":"conference","date_created":"2021-09-09T12:26:15Z","place":"Shanghai, China","abstract":[{"text":"We present a complete Visible Light Communication (VLC) system for experimental Vehicular VLC (V-VLC) research activities. Visible light is becoming an important technology complementing existing Radio Frequency (RF) technologies such as Cellular V2X (C-V2X) and Dedicated Short Range Communication (DSRC). In this scope, first works helped introducing new simulation models to explore V-VLC capabilities, technologies, and algorithms. Yet, experimental prototypes are still in an early phase. We aim bridging this gap with our system, which integrates a custom-made driver hardware, commercial vehicle light modules, and an Open Source signal processing implementation in GNU Radio, which explicitly offers rapid prototyping. Our system supports OFDM with a variety of Modulation and Coding Schemes (MCS) and is compliant to IEEE 802.11; this is in line with the upcoming IEEE 802.11 LC standard as well. In an extensive series of experiments, we assessed the communication performance by looking at realistic inter vehicle distances. Our results clearly show that our system supports even higher order MCS with very low error rates over long distances.","lang":"eng"}],"citation":{"ieee":"M. S. Amjad <i>et al.</i>, “An IEEE 802.11 Compliant SDR-Based System for Vehicular Visible Light Communications,” in <i>IEEE International Conference on Communications (ICC)</i>, 2019, pp. 1–6, doi: <a href=\"https://doi.org/10.1109/ICC.2019.8761960\">10.1109/ICC.2019.8761960</a>.","mla":"Amjad, Muhammad Sohaib, et al. “An IEEE 802.11 Compliant SDR-Based System for Vehicular Visible Light Communications.” <i>IEEE International Conference on Communications (ICC)</i>, ICC 2019 - 2019 IEEE International Conference on Communications (ICC), 2019, pp. 1–6, doi:<a href=\"https://doi.org/10.1109/ICC.2019.8761960\">10.1109/ICC.2019.8761960</a>.","apa":"Amjad, M. S., Tebruegge, C., Memedi, A., Kruse, S., Kress, C., Scheytt, C., &#38; Dressler, F. (2019). An IEEE 802.11 Compliant SDR-Based System for Vehicular Visible Light Communications. <i>IEEE International Conference on Communications (ICC)</i>, 1–6. <a href=\"https://doi.org/10.1109/ICC.2019.8761960\">https://doi.org/10.1109/ICC.2019.8761960</a>","bibtex":"@inproceedings{Amjad_Tebruegge_Memedi_Kruse_Kress_Scheytt_Dressler_2019, place={Shanghai, China}, title={An IEEE 802.11 Compliant SDR-Based System for Vehicular Visible Light Communications}, DOI={<a href=\"https://doi.org/10.1109/ICC.2019.8761960\">10.1109/ICC.2019.8761960</a>}, booktitle={IEEE International Conference on Communications (ICC)}, publisher={ICC 2019 - 2019 IEEE International Conference on Communications (ICC)}, author={Amjad, Muhammad Sohaib and Tebruegge, Claas and Memedi, Agon and Kruse, Stephan and Kress, Christian and Scheytt, Christoph and Dressler, Falko}, year={2019}, pages={1–6} }","chicago":"Amjad, Muhammad Sohaib, Claas Tebruegge, Agon Memedi, Stephan Kruse, Christian Kress, Christoph Scheytt, and Falko Dressler. “An IEEE 802.11 Compliant SDR-Based System for Vehicular Visible Light Communications.” In <i>IEEE International Conference on Communications (ICC)</i>, 1–6. Shanghai, China: ICC 2019 - 2019 IEEE International Conference on Communications (ICC), 2019. <a href=\"https://doi.org/10.1109/ICC.2019.8761960\">https://doi.org/10.1109/ICC.2019.8761960</a>.","ama":"Amjad MS, Tebruegge C, Memedi A, et al. An IEEE 802.11 Compliant SDR-Based System for Vehicular Visible Light Communications. In: <i>IEEE International Conference on Communications (ICC)</i>. ICC 2019 - 2019 IEEE International Conference on Communications (ICC); 2019:1-6. doi:<a href=\"https://doi.org/10.1109/ICC.2019.8761960\">10.1109/ICC.2019.8761960</a>","short":"M.S. Amjad, C. Tebruegge, A. Memedi, S. Kruse, C. Kress, C. Scheytt, F. Dressler, in: IEEE International Conference on Communications (ICC), ICC 2019 - 2019 IEEE International Conference on Communications (ICC), Shanghai, China, 2019, pp. 1–6."},"publication":"IEEE International Conference on Communications (ICC)"},{"doi":"10.1109/IMaRC45935.2019.9118726","user_id":"38254","publisher":"IEEE","_id":"24048","language":[{"iso":"eng"}],"date_updated":"2025-02-25T05:56:15Z","conference":{"start_date":"2019.12.13","end_date":"2019.12.15"},"author":[{"id":"38254","last_name":"Kruse","first_name":"Stephan","full_name":"Kruse, Stephan"}],"status":"public","year":"2019","title":"An Area Efficient 19.25 GHz to 77 GHz Gilbert Cell Frequency Quadrupler with 55% Shrinked Delay Lines in 130nm SiGe BiCMOS ","department":[{"_id":"58"}],"type":"conference","place":"Bombay, Mumbai, India","date_created":"2021-09-09T12:26:02Z","abstract":[{"text":"This paper presents an area-efficient 19.25 GHz to 77 GHz frequency quadrupler for automotive radar applications. To reduce chip area, the delay lines of each doubler stage have been drastically shrunk by means of meandering, slow wave structures, and capacitive loading. Additional circuit techniques were applied to further reduce chip area. Compared to previously published Gilbert cell frequency multipliers the presented quadrupler achieves the shortest electrical length of the delay lines reported so far allowing for compact, low-cost radar transceivers. The chip was implemented in a IHP 130nm SiGe BiCMOS technology (f T /f max =240/340GHz). It dissipates 91.5mW from a 3.3V supply.","lang":"eng"}],"citation":{"chicago":"Kruse, Stephan. “An Area Efficient 19.25 GHz to 77 GHz Gilbert Cell Frequency Quadrupler with 55% Shrinked Delay Lines in 130nm SiGe BiCMOS .” In <i>IEEE MTT-S International Microwave and RF Conference 2019</i>. Bombay, Mumbai, India: IEEE, 2019. <a href=\"https://doi.org/10.1109/IMaRC45935.2019.9118726\">https://doi.org/10.1109/IMaRC45935.2019.9118726</a>.","short":"S. Kruse, in: IEEE MTT-S International Microwave and RF Conference 2019, IEEE, Bombay, Mumbai, India, 2019.","apa":"Kruse, S. (2019). An Area Efficient 19.25 GHz to 77 GHz Gilbert Cell Frequency Quadrupler with 55% Shrinked Delay Lines in 130nm SiGe BiCMOS . <i>IEEE MTT-S International Microwave and RF Conference 2019</i>. <a href=\"https://doi.org/10.1109/IMaRC45935.2019.9118726\">https://doi.org/10.1109/IMaRC45935.2019.9118726</a>","ieee":"S. Kruse, “An Area Efficient 19.25 GHz to 77 GHz Gilbert Cell Frequency Quadrupler with 55% Shrinked Delay Lines in 130nm SiGe BiCMOS ,” 2019, doi: <a href=\"https://doi.org/10.1109/IMaRC45935.2019.9118726\">10.1109/IMaRC45935.2019.9118726</a>.","ama":"Kruse S. An Area Efficient 19.25 GHz to 77 GHz Gilbert Cell Frequency Quadrupler with 55% Shrinked Delay Lines in 130nm SiGe BiCMOS . In: <i>IEEE MTT-S International Microwave and RF Conference 2019</i>. IEEE; 2019. doi:<a href=\"https://doi.org/10.1109/IMaRC45935.2019.9118726\">10.1109/IMaRC45935.2019.9118726</a>","bibtex":"@inproceedings{Kruse_2019, place={Bombay, Mumbai, India}, title={An Area Efficient 19.25 GHz to 77 GHz Gilbert Cell Frequency Quadrupler with 55% Shrinked Delay Lines in 130nm SiGe BiCMOS }, DOI={<a href=\"https://doi.org/10.1109/IMaRC45935.2019.9118726\">10.1109/IMaRC45935.2019.9118726</a>}, booktitle={IEEE MTT-S International Microwave and RF Conference 2019}, publisher={IEEE}, author={Kruse, Stephan}, year={2019} }","mla":"Kruse, Stephan. “An Area Efficient 19.25 GHz to 77 GHz Gilbert Cell Frequency Quadrupler with 55% Shrinked Delay Lines in 130nm SiGe BiCMOS .” <i>IEEE MTT-S International Microwave and RF Conference 2019</i>, IEEE, 2019, doi:<a href=\"https://doi.org/10.1109/IMaRC45935.2019.9118726\">10.1109/IMaRC45935.2019.9118726</a>."},"publication":"IEEE MTT-S International Microwave and RF Conference 2019"},{"date_updated":"2025-07-02T12:19:03Z","intvolume":"        27","title":"Integrated source-free all optical sampling with a sampling rate of up to three times the RF bandwidth of silicon photonic MZM","year":"2019","author":[{"first_name":"Arijit","last_name":"Misra","full_name":"Misra, Arijit"},{"id":"13256","first_name":"Christian","orcid":"0000-0002-4403-2237","last_name":"Kress","full_name":"Kress, Christian"},{"last_name":"Singh","first_name":"Karanveer","full_name":"Singh, Karanveer"},{"full_name":"Preussler, Stefan","last_name":"Preussler","first_name":"Stefan"},{"id":"37144","first_name":"Christoph","orcid":"https://orcid.org/0000-0002-5950-6618","last_name":"Scheytt","full_name":"Scheytt, Christoph"},{"full_name":"Schneider, Thomas","first_name":"Thomas","last_name":"Schneider"}],"doi":"10.1364/OE.27.029972","language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"Source-free all optical sampling, based on the convolution of the signal spectrum\r\nwith a frequency comb in an electronic-photonic, co-integrated silicon device will be presented\r\nfor the first time, to the best of our knowledge. The method has the potential to achieve very high\r\nprecision, requires only low power and can be fully tunable in the electrical domain. Sampling\r\nrates of three and four times the RF bandwidths of the photonics and electronics can be achieved.\r\nThus, the presented method might lead to low-footprint, fully-integrated, precise, electrically\r\ntunable, photonic ADCs with very high-analog bandwidths for the digital infrastructure of\r\ntomorrow."}],"related_material":{"link":[{"url":"https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-27-21-29972&id=421959","relation":"confirmation"}]},"issue":"21","publication":"Opt. Express","type":"journal_article","department":[{"_id":"58"},{"_id":"230"}],"date_created":"2021-09-09T12:26:11Z","status":"public","user_id":"13256","volume":27,"page":"29972-29984","_id":"24056","project":[{"name":"PONyDAC: SPP 2111 - PONyDAC II - Präziser Optischer Nyquist-Puls-Synthesizer DAC","grant_number":"403154102","_id":"302"},{"_id":"299","grant_number":"13N14882","name":"NyPhE: NyPhE - Nyquist Silicon Photonics Engine"}],"citation":{"mla":"Misra, Arijit, et al. “Integrated Source-Free All Optical Sampling with a Sampling Rate of up to Three Times the RF Bandwidth of Silicon Photonic MZM.” <i>Opt. Express</i>, vol. 27, no. 21, 2019, pp. 29972–84, doi:<a href=\"https://doi.org/10.1364/OE.27.029972\">10.1364/OE.27.029972</a>.","ama":"Misra A, Kress C, Singh K, Preussler S, Scheytt C, Schneider T. Integrated source-free all optical sampling with a sampling rate of up to three times the RF bandwidth of silicon photonic MZM. <i>Opt Express</i>. 2019;27(21):29972-29984. doi:<a href=\"https://doi.org/10.1364/OE.27.029972\">10.1364/OE.27.029972</a>","bibtex":"@article{Misra_Kress_Singh_Preussler_Scheytt_Schneider_2019, title={Integrated source-free all optical sampling with a sampling rate of up to three times the RF bandwidth of silicon photonic MZM}, volume={27}, DOI={<a href=\"https://doi.org/10.1364/OE.27.029972\">10.1364/OE.27.029972</a>}, number={21}, journal={Opt. Express}, author={Misra, Arijit and Kress, Christian and Singh, Karanveer and Preussler, Stefan and Scheytt, Christoph and Schneider, Thomas}, year={2019}, pages={29972–29984} }","apa":"Misra, A., Kress, C., Singh, K., Preussler, S., Scheytt, C., &#38; Schneider, T. (2019). Integrated source-free all optical sampling with a sampling rate of up to three times the RF bandwidth of silicon photonic MZM. <i>Opt. Express</i>, <i>27</i>(21), 29972–29984. <a href=\"https://doi.org/10.1364/OE.27.029972\">https://doi.org/10.1364/OE.27.029972</a>","ieee":"A. Misra, C. Kress, K. Singh, S. Preussler, C. Scheytt, and T. Schneider, “Integrated source-free all optical sampling with a sampling rate of up to three times the RF bandwidth of silicon photonic MZM,” <i>Opt. Express</i>, vol. 27, no. 21, pp. 29972–29984, 2019, doi: <a href=\"https://doi.org/10.1364/OE.27.029972\">10.1364/OE.27.029972</a>.","short":"A. Misra, C. Kress, K. Singh, S. Preussler, C. Scheytt, T. Schneider, Opt. Express 27 (2019) 29972–29984.","chicago":"Misra, Arijit, Christian Kress, Karanveer Singh, Stefan Preussler, Christoph Scheytt, and Thomas Schneider. “Integrated Source-Free All Optical Sampling with a Sampling Rate of up to Three Times the RF Bandwidth of Silicon Photonic MZM.” <i>Opt. Express</i> 27, no. 21 (2019): 29972–84. <a href=\"https://doi.org/10.1364/OE.27.029972\">https://doi.org/10.1364/OE.27.029972</a>."}},{"page":"1-4","language":[{"iso":"eng"}],"_id":"24054","user_id":"13256","doi":"10.1109/MWP.2019.8892128","status":"public","year":"2019","title":"Integrated All Optical Sampling of Microwave Signals in Silicon Photonics","author":[{"full_name":"Misra, Arijit","first_name":"Arijit","last_name":"Misra"},{"id":"13256","first_name":"Christian","orcid":"0000-0002-4403-2237","last_name":"Kress","full_name":"Kress, Christian"},{"full_name":"Singh, Karanveer","first_name":"Karanveer","last_name":"Singh"},{"last_name":"Preussler","first_name":"Stefan","full_name":"Preussler, Stefan"},{"orcid":"https://orcid.org/0000-0002-5950-6618","first_name":"Christoph","last_name":"Scheytt","full_name":"Scheytt, Christoph","id":"37144"},{"full_name":"Schneider, Thomas","last_name":"Schneider","first_name":"Thomas"}],"conference":{"start_date":"2019.10.07","end_date":"2019.10.10"},"date_updated":"2025-07-02T12:18:46Z","date_created":"2021-09-09T12:26:09Z","place":"Ottawa, ON, Canada, Canada","type":"conference","department":[{"_id":"58"},{"_id":"230"}],"publication":"2019 International Topical Meeting on Microwave Photonics (MWP)","citation":{"mla":"Misra, Arijit, et al. “Integrated All Optical Sampling of Microwave Signals in Silicon Photonics.” <i>2019 International Topical Meeting on Microwave Photonics (MWP)</i>, 2019, pp. 1–4, doi:<a href=\"https://doi.org/10.1109/MWP.2019.8892128\">10.1109/MWP.2019.8892128</a>.","bibtex":"@inproceedings{Misra_Kress_Singh_Preussler_Scheytt_Schneider_2019, place={Ottawa, ON, Canada, Canada}, title={Integrated All Optical Sampling of Microwave Signals in Silicon Photonics}, DOI={<a href=\"https://doi.org/10.1109/MWP.2019.8892128\">10.1109/MWP.2019.8892128</a>}, booktitle={2019 International Topical Meeting on Microwave Photonics (MWP)}, author={Misra, Arijit and Kress, Christian and Singh, Karanveer and Preussler, Stefan and Scheytt, Christoph and Schneider, Thomas}, year={2019}, pages={1–4} }","ama":"Misra A, Kress C, Singh K, Preussler S, Scheytt C, Schneider T. Integrated All Optical Sampling of Microwave Signals in Silicon Photonics. In: <i>2019 International Topical Meeting on Microwave Photonics (MWP)</i>. ; 2019:1-4. doi:<a href=\"https://doi.org/10.1109/MWP.2019.8892128\">10.1109/MWP.2019.8892128</a>","ieee":"A. Misra, C. Kress, K. Singh, S. Preussler, C. Scheytt, and T. Schneider, “Integrated All Optical Sampling of Microwave Signals in Silicon Photonics,” in <i>2019 International Topical Meeting on Microwave Photonics (MWP)</i>, 2019, pp. 1–4, doi: <a href=\"https://doi.org/10.1109/MWP.2019.8892128\">10.1109/MWP.2019.8892128</a>.","apa":"Misra, A., Kress, C., Singh, K., Preussler, S., Scheytt, C., &#38; Schneider, T. (2019). Integrated All Optical Sampling of Microwave Signals in Silicon Photonics. <i>2019 International Topical Meeting on Microwave Photonics (MWP)</i>, 1–4. <a href=\"https://doi.org/10.1109/MWP.2019.8892128\">https://doi.org/10.1109/MWP.2019.8892128</a>","chicago":"Misra, Arijit, Christian Kress, Karanveer Singh, Stefan Preussler, Christoph Scheytt, and Thomas Schneider. “Integrated All Optical Sampling of Microwave Signals in Silicon Photonics.” In <i>2019 International Topical Meeting on Microwave Photonics (MWP)</i>, 1–4. Ottawa, ON, Canada, Canada, 2019. <a href=\"https://doi.org/10.1109/MWP.2019.8892128\">https://doi.org/10.1109/MWP.2019.8892128</a>.","short":"A. Misra, C. Kress, K. Singh, S. Preussler, C. Scheytt, T. Schneider, in: 2019 International Topical Meeting on Microwave Photonics (MWP), Ottawa, ON, Canada, Canada, 2019, pp. 1–4."},"abstract":[{"text":"Optical sampling of pseudo random microwave signals with sinc-shaped Nyquist pulse sequences has been demonstrated in an integrated silicon photonics platform. An electronic-photonic, co-integrated depletion type silicon intensity modulator with high extinction ratio has been used to sample the microwave signal with a sampling rate, which corresponds to three times its RF bandwidth. Thus, a sampling rate of 21 GSa/s is achieved with a 7 GHz modulator, with 3 dBm of differential input power.","lang":"eng"}],"related_material":{"link":[{"relation":"confirmation","url":"https://ieeexplore.ieee.org/document/8892128"}]},"project":[{"name":"PONyDAC: SPP 2111 - PONyDAC II - Präziser Optischer Nyquist-Puls-Synthesizer DAC","_id":"302","grant_number":"403154102"},{"name":"NyPhE: NyPhE - Nyquist Silicon Photonics Engine","grant_number":"13N14882","_id":"299"}]},{"doi":"10.1111/cgf.13625","language":[{"iso":"eng"}],"intvolume":"        38","date_updated":"2025-07-14T12:44:26Z","publication_status":"published","author":[{"first_name":"Manish","last_name":"Mandad","full_name":"Mandad, Manish"},{"orcid":"0000-0003-2340-3462","last_name":"Campen","first_name":"Marcel","full_name":"Campen, Marcel","id":"114904"}],"publication_identifier":{"issn":["0167-7055","1467-8659"]},"title":"Exact Constraint Satisfaction for Truly Seamless Parametrization","year":"2019","department":[{"_id":"969"}],"type":"journal_article","date_created":"2025-06-26T07:35:31Z","abstract":[{"text":"<jats:title>Abstract</jats:title><jats:p>In the field of global surface parametrization a recent focus has been on so‐called seamless parametrization. This term refers to parametrization approaches which, while using an atlas of charts to enable the handling of surfaces of arbitrary topology, relate the parametrization across the cuts between charts via transition functions from special classes of transformations. This effectively makes the cuts invisible to applications which are invariant to these specific transformations in some sense. In actual implementations of these parametrization approaches, however, these restrictions are obeyed only approximately; errors stem from the tolerances of numerical solvers employed and, ultimately, from the limited accuracy of floating point arithmetic. In practice, robustness issues arise from these flaws in the seamlessness of a parametrization, no matter how small. We present a robust global algorithm that turns a given approximately seamless parametrization into an exactly seamless one ‐ that still is representable by standard floating point numbers. It supports common practically relevant additional constraints regarding boundary and feature curve alignment or isocurve connectivity, and ensures that these are likewise fulfilled exactly. This allows subsequent algorithms to operate robustly on the resulting truly seamless parametrization. We believe that the core of our method will furthermore be of benefit in a broader range of applications involving linearly constrained numerical optimization.</jats:p>","lang":"eng"}],"extern":"1","publication":"Computer Graphics Forum","issue":"2","volume":38,"user_id":"117512","_id":"60388","publisher":"Wiley","page":"135-145","status":"public","citation":{"ama":"Mandad M, Campen M. Exact Constraint Satisfaction for Truly Seamless Parametrization. <i>Computer Graphics Forum</i>. 2019;38(2):135-145. doi:<a href=\"https://doi.org/10.1111/cgf.13625\">10.1111/cgf.13625</a>","bibtex":"@article{Mandad_Campen_2019, title={Exact Constraint Satisfaction for Truly Seamless Parametrization}, volume={38}, DOI={<a href=\"https://doi.org/10.1111/cgf.13625\">10.1111/cgf.13625</a>}, number={2}, journal={Computer Graphics Forum}, publisher={Wiley}, author={Mandad, Manish and Campen, Marcel}, year={2019}, pages={135–145} }","mla":"Mandad, Manish, and Marcel Campen. “Exact Constraint Satisfaction for Truly Seamless Parametrization.” <i>Computer Graphics Forum</i>, vol. 38, no. 2, Wiley, 2019, pp. 135–45, doi:<a href=\"https://doi.org/10.1111/cgf.13625\">10.1111/cgf.13625</a>.","short":"M. Mandad, M. Campen, Computer Graphics Forum 38 (2019) 135–145.","chicago":"Mandad, Manish, and Marcel Campen. “Exact Constraint Satisfaction for Truly Seamless Parametrization.” <i>Computer Graphics Forum</i> 38, no. 2 (2019): 135–45. <a href=\"https://doi.org/10.1111/cgf.13625\">https://doi.org/10.1111/cgf.13625</a>.","apa":"Mandad, M., &#38; Campen, M. (2019). Exact Constraint Satisfaction for Truly Seamless Parametrization. <i>Computer Graphics Forum</i>, <i>38</i>(2), 135–145. <a href=\"https://doi.org/10.1111/cgf.13625\">https://doi.org/10.1111/cgf.13625</a>","ieee":"M. Mandad and M. Campen, “Exact Constraint Satisfaction for Truly Seamless Parametrization,” <i>Computer Graphics Forum</i>, vol. 38, no. 2, pp. 135–145, 2019, doi: <a href=\"https://doi.org/10.1111/cgf.13625\">10.1111/cgf.13625</a>."}},{"date_created":"2025-06-26T07:44:21Z","type":"journal_article","department":[{"_id":"969"}],"publication":"ACM Transactions on Graphics","issue":"6","extern":"1","abstract":[{"lang":"eng","text":"<jats:p>\r\n            The problem of discrete surface parametrization, i.e. mapping a mesh to a planar domain, has been investigated extensively. We address the more general problem of mapping\r\n            <jats:italic>between</jats:italic>\r\n            surfaces. In particular, we provide a formulation that yields a map between two disk-topology meshes, which is continuous and injective by construction and which locally minimizes intrinsic distortion. A common approach is to express such a map as the composition of two maps via a simple intermediate domain such as the plane, and to independently optimize the individual maps. However, even if both individual maps are of minimal distortion, there is potentially high distortion in the composed map. In contrast to many previous works, we minimize distortion in an end-to-end manner, directly optimizing the quality of the composed map. This setting poses additional challenges due to the discrete nature of both the source and the target domain. We propose a formulation that, despite the combinatorial aspects of the problem, allows for a purely continuous optimization. Further, our approach addresses the non-smooth nature of discrete distortion measures in this context which hinders straightforward application of off-the-shelf optimization techniques. We demonstrate that, despite the challenges inherent to the more involved setting, discrete surface-to-surface maps can be optimized effectively.\r\n          </jats:p>"}],"language":[{"iso":"eng"}],"doi":"10.1145/3355089.3356519","title":"Distortion-minimizing injective maps between surfaces","year":"2019","publication_identifier":{"issn":["0730-0301","1557-7368"]},"author":[{"full_name":"Schmidt, Patrick","first_name":"Patrick","last_name":"Schmidt"},{"last_name":"Born","first_name":"Janis","full_name":"Born, Janis"},{"id":"114904","full_name":"Campen, Marcel","first_name":"Marcel","last_name":"Campen","orcid":"0000-0003-2340-3462"},{"full_name":"Kobbelt, Leif","last_name":"Kobbelt","first_name":"Leif"}],"publication_status":"published","date_updated":"2025-07-14T12:44:37Z","intvolume":"        38","citation":{"apa":"Schmidt, P., Born, J., Campen, M., &#38; Kobbelt, L. (2019). Distortion-minimizing injective maps between surfaces. <i>ACM Transactions on Graphics</i>, <i>38</i>(6), 1–15. <a href=\"https://doi.org/10.1145/3355089.3356519\">https://doi.org/10.1145/3355089.3356519</a>","mla":"Schmidt, Patrick, et al. “Distortion-Minimizing Injective Maps between Surfaces.” <i>ACM Transactions on Graphics</i>, vol. 38, no. 6, Association for Computing Machinery (ACM), 2019, pp. 1–15, doi:<a href=\"https://doi.org/10.1145/3355089.3356519\">10.1145/3355089.3356519</a>.","ieee":"P. Schmidt, J. Born, M. Campen, and L. Kobbelt, “Distortion-minimizing injective maps between surfaces,” <i>ACM Transactions on Graphics</i>, vol. 38, no. 6, pp. 1–15, 2019, doi: <a href=\"https://doi.org/10.1145/3355089.3356519\">10.1145/3355089.3356519</a>.","chicago":"Schmidt, Patrick, Janis Born, Marcel Campen, and Leif Kobbelt. “Distortion-Minimizing Injective Maps between Surfaces.” <i>ACM Transactions on Graphics</i> 38, no. 6 (2019): 1–15. <a href=\"https://doi.org/10.1145/3355089.3356519\">https://doi.org/10.1145/3355089.3356519</a>.","short":"P. Schmidt, J. Born, M. Campen, L. Kobbelt, ACM Transactions on Graphics 38 (2019) 1–15.","ama":"Schmidt P, Born J, Campen M, Kobbelt L. Distortion-minimizing injective maps between surfaces. <i>ACM Transactions on Graphics</i>. 2019;38(6):1-15. doi:<a href=\"https://doi.org/10.1145/3355089.3356519\">10.1145/3355089.3356519</a>","bibtex":"@article{Schmidt_Born_Campen_Kobbelt_2019, title={Distortion-minimizing injective maps between surfaces}, volume={38}, DOI={<a href=\"https://doi.org/10.1145/3355089.3356519\">10.1145/3355089.3356519</a>}, number={6}, journal={ACM Transactions on Graphics}, publisher={Association for Computing Machinery (ACM)}, author={Schmidt, Patrick and Born, Janis and Campen, Marcel and Kobbelt, Leif}, year={2019}, pages={1–15} }"},"page":"1-15","_id":"60390","publisher":"Association for Computing Machinery (ACM)","user_id":"117512","volume":38,"status":"public"},{"date_created":"2025-06-26T07:40:49Z","type":"journal_article","department":[{"_id":"969"}],"publication":"ACM Transactions on Graphics","issue":"4","abstract":[{"lang":"eng","text":"<jats:p>The generation of quad meshes based on surface parametrization techniques has proven to be a versatile approach. These techniques quantize an initial seamless parametrization so as to obtain an integer grid map implying a pure quad mesh. State-of-the-art methods following this approach have to assume that the surface to be meshed either has no boundary, or has a boundary which the resulting mesh is supposed to be aligned to. In a variety of applications this is not desirable and non-boundary-aligned meshes or grid-parametrizations are preferred. We thus present a technique to robustly generate integer grid maps which are either boundary-aligned, non-boundary-aligned, or partially boundary-aligned, just as required by different applications. We thereby generalize previous work to this broader setting. This enables the reliable generation of trimmed quad meshes with partial elements along the boundary, preferable in various scenarios, from tiled texturing over design and modeling to fabrication and architecture, due to fewer constraints and hence higher overall mesh quality and other benefits in terms of aesthetics and flexibility.</jats:p>"}],"extern":"1","language":[{"iso":"eng"}],"doi":"10.1145/3306346.3323019","year":"2019","title":"Parametrization quantization with free boundaries for trimmed quad meshing","author":[{"full_name":"Lyon, Max","first_name":"Max","last_name":"Lyon"},{"orcid":"0000-0003-2340-3462","last_name":"Campen","first_name":"Marcel","full_name":"Campen, Marcel","id":"114904"},{"full_name":"Bommes, David","first_name":"David","last_name":"Bommes"},{"full_name":"Kobbelt, Leif","last_name":"Kobbelt","first_name":"Leif"}],"publication_identifier":{"issn":["0730-0301","1557-7368"]},"date_updated":"2025-07-14T12:44:32Z","publication_status":"published","intvolume":"        38","citation":{"ama":"Lyon M, Campen M, Bommes D, Kobbelt L. Parametrization quantization with free boundaries for trimmed quad meshing. <i>ACM Transactions on Graphics</i>. 2019;38(4):1-14. doi:<a href=\"https://doi.org/10.1145/3306346.3323019\">10.1145/3306346.3323019</a>","short":"M. Lyon, M. Campen, D. Bommes, L. Kobbelt, ACM Transactions on Graphics 38 (2019) 1–14.","chicago":"Lyon, Max, Marcel Campen, David Bommes, and Leif Kobbelt. “Parametrization Quantization with Free Boundaries for Trimmed Quad Meshing.” <i>ACM Transactions on Graphics</i> 38, no. 4 (2019): 1–14. <a href=\"https://doi.org/10.1145/3306346.3323019\">https://doi.org/10.1145/3306346.3323019</a>.","bibtex":"@article{Lyon_Campen_Bommes_Kobbelt_2019, title={Parametrization quantization with free boundaries for trimmed quad meshing}, volume={38}, DOI={<a href=\"https://doi.org/10.1145/3306346.3323019\">10.1145/3306346.3323019</a>}, number={4}, journal={ACM Transactions on Graphics}, publisher={Association for Computing Machinery (ACM)}, author={Lyon, Max and Campen, Marcel and Bommes, David and Kobbelt, Leif}, year={2019}, pages={1–14} }","mla":"Lyon, Max, et al. “Parametrization Quantization with Free Boundaries for Trimmed Quad Meshing.” <i>ACM Transactions on Graphics</i>, vol. 38, no. 4, Association for Computing Machinery (ACM), 2019, pp. 1–14, doi:<a href=\"https://doi.org/10.1145/3306346.3323019\">10.1145/3306346.3323019</a>.","apa":"Lyon, M., Campen, M., Bommes, D., &#38; Kobbelt, L. (2019). Parametrization quantization with free boundaries for trimmed quad meshing. <i>ACM Transactions on Graphics</i>, <i>38</i>(4), 1–14. <a href=\"https://doi.org/10.1145/3306346.3323019\">https://doi.org/10.1145/3306346.3323019</a>","ieee":"M. Lyon, M. Campen, D. Bommes, and L. Kobbelt, “Parametrization quantization with free boundaries for trimmed quad meshing,” <i>ACM Transactions on Graphics</i>, vol. 38, no. 4, pp. 1–14, 2019, doi: <a href=\"https://doi.org/10.1145/3306346.3323019\">10.1145/3306346.3323019</a>."},"page":"1-14","publisher":"Association for Computing Machinery (ACM)","_id":"60389","user_id":"117512","volume":38,"status":"public"},{"status":"public","_id":"60384","publisher":"Association for Computing Machinery (ACM)","page":"1-19","volume":39,"user_id":"117512","citation":{"mla":"Campen, Marcel, et al. “Seamless Parametrization with Arbitrary Cones for Arbitrary Genus.” <i>ACM Transactions on Graphics</i>, vol. 39, no. 1, Association for Computing Machinery (ACM), 2019, pp. 1–19, doi:<a href=\"https://doi.org/10.1145/3360511\">10.1145/3360511</a>.","apa":"Campen, M., Shen, H., Zhou, J., &#38; Zorin, D. (2019). Seamless Parametrization with Arbitrary Cones for Arbitrary Genus. <i>ACM Transactions on Graphics</i>, <i>39</i>(1), 1–19. <a href=\"https://doi.org/10.1145/3360511\">https://doi.org/10.1145/3360511</a>","ieee":"M. Campen, H. Shen, J. Zhou, and D. Zorin, “Seamless Parametrization with Arbitrary Cones for Arbitrary Genus,” <i>ACM Transactions on Graphics</i>, vol. 39, no. 1, pp. 1–19, 2019, doi: <a href=\"https://doi.org/10.1145/3360511\">10.1145/3360511</a>.","short":"M. Campen, H. Shen, J. Zhou, D. Zorin, ACM Transactions on Graphics 39 (2019) 1–19.","ama":"Campen M, Shen H, Zhou J, Zorin D. Seamless Parametrization with Arbitrary Cones for Arbitrary Genus. <i>ACM Transactions on Graphics</i>. 2019;39(1):1-19. doi:<a href=\"https://doi.org/10.1145/3360511\">10.1145/3360511</a>","chicago":"Campen, Marcel, Hanxiao Shen, Jiaran Zhou, and Denis Zorin. “Seamless Parametrization with Arbitrary Cones for Arbitrary Genus.” <i>ACM Transactions on Graphics</i> 39, no. 1 (2019): 1–19. <a href=\"https://doi.org/10.1145/3360511\">https://doi.org/10.1145/3360511</a>.","bibtex":"@article{Campen_Shen_Zhou_Zorin_2019, title={Seamless Parametrization with Arbitrary Cones for Arbitrary Genus}, volume={39}, DOI={<a href=\"https://doi.org/10.1145/3360511\">10.1145/3360511</a>}, number={1}, journal={ACM Transactions on Graphics}, publisher={Association for Computing Machinery (ACM)}, author={Campen, Marcel and Shen, Hanxiao and Zhou, Jiaran and Zorin, Denis}, year={2019}, pages={1–19} }"},"author":[{"last_name":"Campen","first_name":"Marcel","orcid":"0000-0003-2340-3462","full_name":"Campen, Marcel","id":"114904"},{"last_name":"Shen","first_name":"Hanxiao","full_name":"Shen, Hanxiao"},{"full_name":"Zhou, Jiaran","last_name":"Zhou","first_name":"Jiaran"},{"full_name":"Zorin, Denis","last_name":"Zorin","first_name":"Denis"}],"publication_identifier":{"issn":["0730-0301","1557-7368"]},"title":"Seamless Parametrization with Arbitrary Cones for Arbitrary Genus","year":"2019","intvolume":"        39","date_updated":"2025-07-14T12:48:21Z","publication_status":"published","language":[{"iso":"eng"}],"doi":"10.1145/3360511","issue":"1","publication":"ACM Transactions on Graphics","abstract":[{"text":"<jats:p>Seamless global parametrization of surfaces is a key operation in geometry processing, e.g., for high-quality quad mesh generation. A common approach is to prescribe the parametric domain structure, in particular, the locations of parametrization singularities (cones), and solve a non-convex optimization problem minimizing a distortion measure, with local injectivity imposed through either constraints or barrier terms. In both cases, an initial valid parametrization is essential to serve as a feasible starting point for obtaining an optimized solution. While convexified versions of the constraints eliminate this initialization requirement, they narrow the range of solutions, causing some problem instances that actually do have a solution to become infeasible.</jats:p>\r\n          <jats:p>We demonstrate that for arbitrary given sets of topologically admissible parametric cones with prescribed curvature, a global seamless parametrization always exists (with the exception of one well-known case). Importantly, our proof is constructive and directly leads to a general algorithm for computing such parametrizations. Most distinctively, this algorithm is bootstrapped with a convex optimization problem (solving for a conformal map), in tandem with a simple linear equation system (determining a seamless modification of this map). This initial map can then serve as a valid starting point and be optimized for low distortion using existing injectivity preserving methods.</jats:p>","lang":"eng"}],"extern":"1","date_created":"2025-06-26T07:05:13Z","department":[{"_id":"969"}],"type":"journal_article"},{"date_created":"2018-04-24T08:06:55Z","file":[{"creator":"tabu","date_created":"2018-04-24T08:07:24Z","access_level":"closed","file_size":1428258,"file_name":"p2292-afifi.pdf","date_updated":"2018-04-24T08:07:24Z","relation":"main_file","success":1,"content_type":"application/pdf","file_id":"2475"}],"department":[{"_id":"75"}],"type":"conference","citation":{"apa":"Afifi, H., Auroux, S., &#38; Karl, H. (2018). MARVELO: Wireless Virtual Network Embedding for Overlay Graphs with Loops. Proc. of IEEE Wireless Communications and Networking Conference (WCNC).","ieee":"H. Afifi, S. Auroux, and H. Karl, “MARVELO: Wireless Virtual Network Embedding for Overlay Graphs with Loops,” 2018.","chicago":"Afifi, Haitham, Sébastien Auroux, and Holger Karl. “MARVELO: Wireless Virtual Network Embedding for Overlay Graphs with Loops.” Proc. of IEEE Wireless Communications and Networking Conference (WCNC), 2018.","short":"H. Afifi, S. Auroux, H. Karl, in: Proc. of IEEE Wireless Communications and Networking Conference (WCNC), 2018.","mla":"Afifi, Haitham, et al. <i>MARVELO: Wireless Virtual Network Embedding for Overlay Graphs with Loops</i>. Proc. of IEEE Wireless Communications and Networking Conference (WCNC), 2018.","ama":"Afifi H, Auroux S, Karl H. MARVELO: Wireless Virtual Network Embedding for Overlay Graphs with Loops. In: Proc. of IEEE Wireless Communications and Networking Conference (WCNC); 2018.","bibtex":"@inproceedings{Afifi_Auroux_Karl_2018, title={MARVELO: Wireless Virtual Network Embedding for Overlay Graphs with Loops}, publisher={Proc. of IEEE Wireless Communications and Networking Conference (WCNC)}, author={Afifi, Haitham and Auroux, Sébastien and Karl, Holger}, year={2018} }"},"file_date_updated":"2018-04-24T08:07:24Z","project":[{"_id":"27","name":"Akustische Sensornetzwerke - Teilprojekt "}],"_id":"2474","publisher":"Proc. of IEEE Wireless Communications and Networking Conference (WCNC)","language":[{"iso":"eng"}],"user_id":"65718","ddc":["000"],"author":[{"id":"65718","last_name":"Afifi","first_name":"Haitham","full_name":"Afifi, Haitham"},{"first_name":"Sébastien","last_name":"Auroux","full_name":"Auroux, Sébastien","id":"42575"},{"first_name":"Holger","last_name":"Karl","full_name":"Karl, Holger","id":"126"}],"status":"public","title":"MARVELO: Wireless Virtual Network Embedding for Overlay Graphs with Loops","year":"2018","has_accepted_license":"1","date_updated":"2022-01-06T06:56:33Z"},{"file_date_updated":"2018-04-24T08:08:50Z","citation":{"ieee":"B. Shiferaw Heyi and H. Karl, “Modelling Time-Limited Capacity of a Wireless Channel as aMarkov Reward Process,” 2018.","apa":"Shiferaw Heyi, B., &#38; Karl, H. (2018). Modelling Time-Limited Capacity of a Wireless Channel as aMarkov Reward Process. Proc. of IEEE Wireless Communications and Networking Conference (WCNC).","chicago":"Shiferaw Heyi, Binyam, and Holger Karl. “Modelling Time-Limited Capacity of a Wireless Channel as AMarkov Reward Process.” Proc. of IEEE Wireless Communications and Networking Conference (WCNC), 2018.","short":"B. Shiferaw Heyi, H. Karl, in: Proc. of IEEE Wireless Communications and Networking Conference (WCNC), 2018.","mla":"Shiferaw Heyi, Binyam, and Holger Karl. <i>Modelling Time-Limited Capacity of a Wireless Channel as AMarkov Reward Process</i>. Proc. of IEEE Wireless Communications and Networking Conference (WCNC), 2018.","bibtex":"@inproceedings{Shiferaw Heyi_Karl_2018, title={Modelling Time-Limited Capacity of a Wireless Channel as aMarkov Reward Process}, publisher={Proc. of IEEE Wireless Communications and Networking Conference (WCNC)}, author={Shiferaw Heyi, Binyam and Karl, Holger}, year={2018} }","ama":"Shiferaw Heyi B, Karl H. Modelling Time-Limited Capacity of a Wireless Channel as aMarkov Reward Process. In: Proc. of IEEE Wireless Communications and Networking Conference (WCNC); 2018."},"project":[{"_id":"24","name":"Netzgewahre Regelung & regelungsgewahre Netze"}],"file":[{"access_level":"closed","file_size":428839,"file_name":"p2861-heyi.pdf","date_updated":"2018-04-24T08:08:50Z","relation":"main_file","content_type":"application/pdf","success":1,"file_id":"2477","creator":"tabu","date_created":"2018-04-24T08:08:50Z"}],"date_created":"2018-04-24T08:09:00Z","type":"conference","department":[{"_id":"75"}],"status":"public","title":"Modelling Time-Limited Capacity of a Wireless Channel as aMarkov Reward Process","year":"2018","author":[{"last_name":"Shiferaw Heyi","first_name":"Binyam","full_name":"Shiferaw Heyi, Binyam"},{"full_name":"Karl, Holger","first_name":"Holger","last_name":"Karl","id":"126"}],"date_updated":"2022-01-06T06:56:34Z","has_accepted_license":"1","_id":"2476","publisher":"Proc. of IEEE Wireless Communications and Networking Conference (WCNC)","ddc":["000"],"user_id":"15572"},{"doi":"10.1109/SCC.2018.00039","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://ieeexplore.ieee.org/document/8456425","open_access":"1"}],"publication_status":"published","date_updated":"2022-01-06T06:56:35Z","author":[{"full_name":"Mohr, Felix","first_name":"Felix","last_name":"Mohr"},{"id":"33176","first_name":"Marcel Dominik","orcid":" https://orcid.org/0000-0001-9782-6818","last_name":"Wever","full_name":"Wever, Marcel Dominik"},{"full_name":"Hüllermeier, Eyke","first_name":"Eyke","last_name":"Hüllermeier","id":"48129"},{"first_name":"Amin","last_name":"Faez","full_name":"Faez, Amin"}],"year":"2018","title":"(WIP) Towards the Automated Composition of Machine Learning Services","department":[{"_id":"355"}],"type":"conference","date_created":"2018-04-24T08:34:52Z","file":[{"file_size":237890,"access_level":"closed","file_name":"08456425.pdf","date_updated":"2018-11-06T15:08:39Z","relation":"main_file","content_type":"application/pdf","file_id":"5382","creator":"wever","date_created":"2018-11-06T15:08:39Z"}],"publication":"SCC","user_id":"49109","ddc":["000"],"_id":"2479","publisher":"IEEE","has_accepted_license":"1","conference":{"name":"IEEE International Conference on Services Computing, SCC 2018","start_date":"2018-07-02","location":"San Francisco, CA, USA","end_date":"2018-07-07"},"status":"public","oa":"1","place":"San Francisco, CA, USA","project":[{"_id":"1","name":"SFB 901"},{"_id":"3","name":"SFB 901 - Project Area B"},{"_id":"10","name":"SFB 901 - Subproject B2"}],"citation":{"chicago":"Mohr, Felix, Marcel Dominik Wever, Eyke Hüllermeier, and Amin Faez. “(WIP) Towards the Automated Composition of Machine Learning Services.” In <i>SCC</i>. San Francisco, CA, USA: IEEE, 2018. <a href=\"https://doi.org/10.1109/SCC.2018.00039\">https://doi.org/10.1109/SCC.2018.00039</a>.","short":"F. Mohr, M.D. Wever, E. Hüllermeier, A. Faez, in: SCC, IEEE, San Francisco, CA, USA, 2018.","ieee":"F. Mohr, M. D. Wever, E. Hüllermeier, and A. Faez, “(WIP) Towards the Automated Composition of Machine Learning Services,” in <i>SCC</i>, San Francisco, CA, USA, 2018.","apa":"Mohr, F., Wever, M. D., Hüllermeier, E., &#38; Faez, A. (2018). (WIP) Towards the Automated Composition of Machine Learning Services. In <i>SCC</i>. San Francisco, CA, USA: IEEE. <a href=\"https://doi.org/10.1109/SCC.2018.00039\">https://doi.org/10.1109/SCC.2018.00039</a>","bibtex":"@inproceedings{Mohr_Wever_Hüllermeier_Faez_2018, place={San Francisco, CA, USA}, title={(WIP) Towards the Automated Composition of Machine Learning Services}, DOI={<a href=\"https://doi.org/10.1109/SCC.2018.00039\">10.1109/SCC.2018.00039</a>}, booktitle={SCC}, publisher={IEEE}, author={Mohr, Felix and Wever, Marcel Dominik and Hüllermeier, Eyke and Faez, Amin}, year={2018} }","ama":"Mohr F, Wever MD, Hüllermeier E, Faez A. (WIP) Towards the Automated Composition of Machine Learning Services. In: <i>SCC</i>. San Francisco, CA, USA: IEEE; 2018. doi:<a href=\"https://doi.org/10.1109/SCC.2018.00039\">10.1109/SCC.2018.00039</a>","mla":"Mohr, Felix, et al. “(WIP) Towards the Automated Composition of Machine Learning Services.” <i>SCC</i>, IEEE, 2018, doi:<a href=\"https://doi.org/10.1109/SCC.2018.00039\">10.1109/SCC.2018.00039</a>."},"file_date_updated":"2018-11-06T15:08:39Z"},{"publication":"4th IEEE International Conference on Network Softwarization (NetSoft 2018)","abstract":[{"lang":"eng","text":"Understanding the behavior of the components of service function chains (SFCs) in different load situations is important for efficient and automatic management and orches- tration of services. For this purpose and for practical research in network function virtualization in general, there is a great need for benchmarks and experimental data. In this paper, we describe our experiments for characterizing the relationship between resource demands of virtual network functions (VNFs) and the expected performance of the SFC, considering the individual performance of the VNFs as well as the interdependencies among VNFs within the SFC. We have designed our experiments focusing on video streaming, an important application in this context. We present examples of models for predicting the interdependence between resource demands and performance characteristics of SFCs using support vector regression and polynomial regression models. We also show practical evidence from our experiments that VNFs need to be benchmarked in their final chain setup, rather than individually, to capture important interdependencies that affect their performance. The data gathered from our experiments is publicly available."}],"date_created":"2018-04-24T12:11:36Z","file":[{"date_created":"2018-12-12T15:18:12Z","creator":"ups","content_type":"application/pdf","success":1,"file_id":"6195","date_updated":"2018-12-12T15:18:12Z","relation":"main_file","file_size":2211450,"access_level":"closed","file_name":"08460029.pdf"},{"creator":"sevilmeh","date_created":"2019-01-24T10:17:00Z","file_name":"NetSoft18_RIS.pdf","access_level":"open_access","file_size":3445650,"relation":"main_file","date_updated":"2019-01-24T10:17:00Z","file_id":"6968","content_type":"application/pdf"}],"department":[{"_id":"75"}],"type":"conference","author":[{"first_name":"Sevil","last_name":"Dräxler","full_name":"Dräxler, Sevil","id":"31764"},{"last_name":"Peuster","first_name":"Manuel","full_name":"Peuster, Manuel","id":"13271"},{"last_name":"Illian","first_name":"Marvin","full_name":"Illian, Marvin"},{"last_name":"Karl","first_name":"Holger","full_name":"Karl, Holger","id":"126"}],"year":"2018","title":"Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case","date_updated":"2022-01-06T06:56:37Z","language":[{"iso":"eng"}],"doi":"10.1109/NETSOFT.2018.8460029","citation":{"bibtex":"@inproceedings{Dräxler_Peuster_Illian_Karl_2018, title={Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case}, DOI={<a href=\"https://doi.org/10.1109/NETSOFT.2018.8460029\">10.1109/NETSOFT.2018.8460029</a>}, booktitle={4th IEEE International Conference on Network Softwarization (NetSoft 2018)}, publisher={IEEE}, author={Dräxler, Sevil and Peuster, Manuel and Illian, Marvin and Karl, Holger}, year={2018}, pages={318--322} }","ama":"Dräxler S, Peuster M, Illian M, Karl H. Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case. In: <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>. IEEE; 2018:318--322. doi:<a href=\"https://doi.org/10.1109/NETSOFT.2018.8460029\">10.1109/NETSOFT.2018.8460029</a>","mla":"Dräxler, Sevil, et al. “Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case.” <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>, IEEE, 2018, pp. 318--322, doi:<a href=\"https://doi.org/10.1109/NETSOFT.2018.8460029\">10.1109/NETSOFT.2018.8460029</a>.","chicago":"Dräxler, Sevil, Manuel Peuster, Marvin Illian, and Holger Karl. “Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case.” In <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>, 318--322. IEEE, 2018. <a href=\"https://doi.org/10.1109/NETSOFT.2018.8460029\">https://doi.org/10.1109/NETSOFT.2018.8460029</a>.","short":"S. Dräxler, M. Peuster, M. Illian, H. Karl, in: 4th IEEE International Conference on Network Softwarization (NetSoft 2018), IEEE, 2018, pp. 318--322.","ieee":"S. Dräxler, M. Peuster, M. Illian, and H. Karl, “Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case,” in <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>, Montreal, 2018, pp. 318--322.","apa":"Dräxler, S., Peuster, M., Illian, M., &#38; Karl, H. (2018). Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case. In <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i> (pp. 318--322). Montreal: IEEE. <a href=\"https://doi.org/10.1109/NETSOFT.2018.8460029\">https://doi.org/10.1109/NETSOFT.2018.8460029</a>"},"file_date_updated":"2019-01-24T10:17:00Z","project":[{"_id":"23","grant_number":"762057","name":"5G Programmable Infrastructure Converging disaggregated neTwork and compUte Resources"},{"_id":"1","name":"SFB 901"},{"name":"SFB 901 - Project Area C","_id":"4"},{"_id":"16","name":"SFB 901 - Subproject C4"}],"oa":"1","conference":{"end_date":"2018-07-29","name":"4th IEEE International Conference on Network Softwarization (NetSoft 2018)","start_date":"2018-07-25","location":"Montreal"},"status":"public","has_accepted_license":"1","publisher":"IEEE","_id":"2480","page":"318--322","ddc":["004"],"user_id":"31764"},{"oa":"1","file_date_updated":"2018-06-25T07:40:57Z","citation":{"mla":"Dräxler, Sevil, et al. “ Scaling and Placing Bidirectional Services with Stateful Virtual and Physical Network Functions.” <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>, IEEE, 2018, pp. 123--131.","bibtex":"@inproceedings{Dräxler_Schneider_Karl_2018, title={ Scaling and Placing Bidirectional Services with Stateful Virtual and Physical Network Functions}, booktitle={4th IEEE International Conference on Network Softwarization (NetSoft 2018)}, publisher={IEEE}, author={Dräxler, Sevil and Schneider, Stefan Balthasar and Karl, Holger}, year={2018}, pages={123--131} }","ama":"Dräxler S, Schneider SB, Karl H.  Scaling and Placing Bidirectional Services with Stateful Virtual and Physical Network Functions. In: <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>. IEEE; 2018:123--131.","ieee":"S. Dräxler, S. B. Schneider, and H. Karl, “ Scaling and Placing Bidirectional Services with Stateful Virtual and Physical Network Functions,” in <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>, Montreal, 2018, pp. 123--131.","apa":"Dräxler, S., Schneider, S. B., &#38; Karl, H. (2018).  Scaling and Placing Bidirectional Services with Stateful Virtual and Physical Network Functions. In <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i> (pp. 123--131). Montreal: IEEE.","chicago":"Dräxler, Sevil, Stefan Balthasar Schneider, and Holger Karl. “ Scaling and Placing Bidirectional Services with Stateful Virtual and Physical Network Functions.” In <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>, 123--131. IEEE, 2018.","short":"S. Dräxler, S.B. Schneider, H. Karl, in: 4th IEEE International Conference on Network Softwarization (NetSoft 2018), IEEE, 2018, pp. 123--131."},"project":[{"_id":"28","grant_number":"761493","name":"5G Development and validation platform for global industry-specific network services and Apps"},{"name":"SFB 901","_id":"1"},{"_id":"4","name":"SFB 901 - Project Area C"},{"_id":"16","name":"SFB 901 - Subproject C4"}],"page":"123--131","_id":"2481","urn":"24814","publisher":"IEEE","user_id":"477","ddc":["040"],"status":"public","conference":{"name":"4th IEEE International Conference on Network Softwarization (NetSoft 2018)","location":"Montreal"},"has_accepted_license":"1","file":[{"date_updated":"2018-06-25T07:40:57Z","relation":"main_file","file_size":1471937,"access_level":"open_access","file_name":"RIS.pdf","content_type":"application/pdf","file_id":"3319","creator":"sevilmeh","date_created":"2018-06-25T07:40:57Z"}],"date_created":"2018-04-24T12:14:00Z","type":"conference","department":[{"_id":"75"}],"publication":"4th IEEE International Conference on Network Softwarization (NetSoft 2018)","abstract":[{"text":"Network function virtualization requires scaling and placement, deciding the number and the location of function instances. Current approaches are limited in flexibility and practical applicability. Specifically, we study dynamic, single-step, joint scaling and placement of network services with bidirectional flows traversing Physical or Virtual Network Functions (VNFs) and returning to their sources. We develop models to support stateful components and legacy network functions with fixed locations in these network services as well as the possibility of reusing VNFs across network services. We formalize the problem of jointly scaling and placing such network services as a mixed- integer linear program (MILP). We show that this problem is NP-complete and also present a heuristic algorithm to find good solutions in short time. In an extensive evaluation with realistic scenarios, we investigate the capabilities of the two approaches.","lang":"eng"}],"language":[{"iso":"eng"}],"title":" Scaling and Placing Bidirectional Services with Stateful Virtual and Physical Network Functions","year":"2018","author":[{"last_name":"Dräxler","first_name":"Sevil","full_name":"Dräxler, Sevil","id":"31764"},{"full_name":"Schneider, Stefan Balthasar","first_name":"Stefan Balthasar","last_name":"Schneider","orcid":"0000-0001-8210-4011","id":"35343"},{"full_name":"Karl, Holger","first_name":"Holger","last_name":"Karl","id":"126"}],"publication_status":"published","date_updated":"2022-01-06T06:56:38Z"},{"user_id":"31764","ddc":["000"],"_id":"2483","status":"public","oa":"1","place":"Wien, Darmstadt","project":[{"name":"5G Programmable Infrastructure Converging disaggregated neTwork and compUte Resources","_id":"23","grant_number":"762057"},{"_id":"1","name":"SFB 901"},{"_id":"4","name":"SFB 901 - Project Area C"},{"name":"SFB 901 - Subproject C4","_id":"16"}],"citation":{"short":"S. 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Wien, Darmstadt; 2018.","mla":"Dräxler, Sevil, et al. <i>Towards Predicting Resource Demands and Performance of Distributed Cloud Services</i>. 2018."},"language":[{"iso":"eng"}],"series_title":"KuVS-Fachgespräch Fog Computing 2018","main_file_link":[{"open_access":"1","url":"http://www.infosys.tuwien.ac.at/docs/proceedings.pdf#page=14"}],"publication_status":"published","date_updated":"2022-01-06T06:56:38Z","author":[{"id":"31764","first_name":"Sevil","last_name":"Dräxler","full_name":"Dräxler, Sevil"},{"id":"13271","full_name":"Peuster, Manuel","first_name":"Manuel","last_name":"Peuster"},{"last_name":"Illian","first_name":"Marvin","full_name":"Illian, Marvin"},{"first_name":"Holger","last_name":"Karl","full_name":"Karl, Holger","id":"126"}],"title":"Towards Predicting Resource Demands and Performance of Distributed Cloud Services","year":"2018","department":[{"_id":"75"}],"type":"report","date_created":"2018-04-24T12:22:40Z","abstract":[{"lang":"eng","text":"Understanding the behavior of distributed cloud service components in different load situations is important for efficient and automatic management and orchestration of these services. For this purpose and for practical research in distributed cloud computing in general, there is need for benchmarks and experimental data. In this paper, we describe our experiments for characterizing the relationship between resource demands of application components and the expected performance of applica- tions. We present initial results for predicting the interdependence between resource demands and performance characteristics using support vector regression and polynomial regression models. The data gathered from our experiments is publicly available."}],"related_material":{"link":[{"url":"http://repositum.tuwien.ac.at/obvutwoa/content/titleinfo/2514843","relation":"confirmation"}]}},{"has_accepted_license":"1","status":"public","conference":{"end_date":"2018-07-13","start_date":"2018-07-10","name":"45th International Colloquium on Automata, Languages, and Programming (ICALP 2018)","location":"Prag"},"user_id":"14052","ddc":["000"],"volume":107,"editor":[{"last_name":"Chatzigiannakis","first_name":"Ioannis","full_name":"Chatzigiannakis, Ioannis"},{"full_name":"Kaklamanis, Christos","last_name":"Kaklamanis","first_name":"Christos"},{"first_name":"Dániel","last_name":"Marx","full_name":"Marx, Dániel"},{"first_name":"Donald","last_name":"Sannella","full_name":"Sannella, Donald"}],"page":"51:1-51:24","publisher":"Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik","_id":"2484","project":[{"_id":"1","name":"SFB 901"},{"name":"SFB 901 - Project Area A","_id":"2"},{"_id":"4","name":"SFB 901 - Project Area C"},{"_id":"5","name":"SFB 901 - Subproject A1"},{"name":"SFB 901 - Subproject A3","_id":"7"},{"_id":"16","name":"SFB 901 - Subproject C4"}],"file_date_updated":"2018-10-31T16:58:18Z","citation":{"apa":"Feldkord, B., Feldotto, M., Gupta, A., Guruganesh, G., Kumar, A., Riechers, S., &#38; Wajc, D. (2018). Fully-Dynamic Bin Packing with Little Repacking. In I. Chatzigiannakis, C. Kaklamanis, D. Marx, &#38; D. Sannella (Eds.), <i>45th International Colloquium on Automata, Languages, and Programming (ICALP 2018)</i> (Vol. 107, pp. 51:1-51:24). Dagstuhl, Germany: Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik. <a href=\"https://doi.org/10.4230/LIPIcs.ICALP.2018.51\">https://doi.org/10.4230/LIPIcs.ICALP.2018.51</a>","ieee":"B. Feldkord <i>et al.</i>, “Fully-Dynamic Bin Packing with Little Repacking,” in <i>45th International Colloquium on Automata, Languages, and Programming (ICALP 2018)</i>, Prag, 2018, vol. 107, pp. 51:1-51:24.","chicago":"Feldkord, Björn, Matthias Feldotto, Anupam Gupta, Guru Guruganesh, Amit  Kumar, Sören Riechers, and David Wajc. “Fully-Dynamic Bin Packing with Little Repacking.” In <i>45th International Colloquium on Automata, Languages, and Programming (ICALP 2018)</i>, edited by Ioannis Chatzigiannakis, Christos Kaklamanis, Dániel Marx, and Donald Sannella, 107:51:1-51:24. Leibniz International Proceedings in Informatics (LIPIcs). Dagstuhl, Germany: Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik, 2018. <a href=\"https://doi.org/10.4230/LIPIcs.ICALP.2018.51\">https://doi.org/10.4230/LIPIcs.ICALP.2018.51</a>.","short":"B. Feldkord, M. Feldotto, A. Gupta, G. Guruganesh, A. Kumar, S. Riechers, D. Wajc, in: I. Chatzigiannakis, C. Kaklamanis, D. Marx, D. Sannella (Eds.), 45th International Colloquium on Automata, Languages, and Programming (ICALP 2018), Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik, Dagstuhl, Germany, 2018, pp. 51:1-51:24.","mla":"Feldkord, Björn, et al. “Fully-Dynamic Bin Packing with Little Repacking.” <i>45th International Colloquium on Automata, Languages, and Programming (ICALP 2018)</i>, edited by Ioannis Chatzigiannakis et al., vol. 107, Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik, 2018, pp. 51:1-51:24, doi:<a href=\"https://doi.org/10.4230/LIPIcs.ICALP.2018.51\">10.4230/LIPIcs.ICALP.2018.51</a>.","ama":"Feldkord B, Feldotto M, Gupta A, et al. Fully-Dynamic Bin Packing with Little Repacking. In: Chatzigiannakis I, Kaklamanis C, Marx D, Sannella D, eds. <i>45th International Colloquium on Automata, Languages, and Programming (ICALP 2018)</i>. Vol 107. Leibniz International Proceedings in Informatics (LIPIcs). Dagstuhl, Germany: Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik; 2018:51:1-51:24. doi:<a href=\"https://doi.org/10.4230/LIPIcs.ICALP.2018.51\">10.4230/LIPIcs.ICALP.2018.51</a>","bibtex":"@inproceedings{Feldkord_Feldotto_Gupta_Guruganesh_Kumar_Riechers_Wajc_2018, place={Dagstuhl, Germany}, series={Leibniz International Proceedings in Informatics (LIPIcs)}, title={Fully-Dynamic Bin Packing with Little Repacking}, volume={107}, DOI={<a href=\"https://doi.org/10.4230/LIPIcs.ICALP.2018.51\">10.4230/LIPIcs.ICALP.2018.51</a>}, booktitle={45th International Colloquium on Automata, Languages, and Programming (ICALP 2018)}, publisher={Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik}, author={Feldkord, Björn and Feldotto, Matthias and Gupta, Anupam and Guruganesh, Guru and Kumar, Amit  and Riechers, Sören and Wajc, David}, editor={Chatzigiannakis, Ioannis and Kaklamanis, Christos and Marx, Dániel and Sannella, DonaldEditors}, year={2018}, pages={51:1-51:24}, collection={Leibniz International Proceedings in Informatics (LIPIcs)} }"},"external_id":{"arxiv":["1711.01231"]},"place":"Dagstuhl, Germany","publication_status":"published","date_updated":"2022-01-06T06:56:39Z","intvolume":"       107","title":"Fully-Dynamic Bin Packing with Little Repacking","year":"2018","author":[{"last_name":"Feldkord","first_name":"Björn","full_name":"Feldkord, Björn","id":"22704"},{"full_name":"Feldotto, Matthias","last_name":"Feldotto","orcid":"0000-0003-1348-6516","first_name":"Matthias","id":"14052"},{"first_name":"Anupam","last_name":"Gupta","full_name":"Gupta, Anupam"},{"last_name":"Guruganesh","first_name":"Guru","full_name":"Guruganesh, Guru"},{"first_name":"Amit ","last_name":"Kumar","full_name":"Kumar, Amit "},{"first_name":"Sören","last_name":"Riechers","full_name":"Riechers, Sören"},{"first_name":"David","last_name":"Wajc","full_name":"Wajc, David"}],"publication_identifier":{"isbn":["978-3-95977-076-7"],"issn":["1868-8969"]},"doi":"10.4230/LIPIcs.ICALP.2018.51","language":[{"iso":"eng"}],"series_title":"Leibniz International Proceedings in Informatics (LIPIcs)","abstract":[{"text":"We study the classic bin packing problem in a fully-dynamic setting, where new items can arrive and old items may depart. We want algorithms with low asymptotic competitive ratio while repacking items sparingly between updates. Formally, each item i has a movement cost c_i >= 0, and we want to use alpha * OPT bins and incur a movement cost gamma * c_i, either in the worst case, or in an amortized sense, for alpha, gamma as small as possible. We call gamma the recourse of the algorithm. This is motivated by cloud storage applications, where fully-dynamic bin packing models the problem of data backup to minimize the number of disks used, as well as communication incurred in moving file backups between disks. Since the set of files changes over time, we could recompute a solution periodically from scratch, but this would give a high number of disk rewrites, incurring a high energy cost and possible wear and tear of the disks. In this work, we present optimal tradeoffs between number of bins used and number of items repacked, as well as natural extensions of the latter measure.","lang":"eng"}],"publication":"45th International Colloquium on Automata, Languages, and Programming (ICALP 2018)","type":"conference","department":[{"_id":"541"},{"_id":"63"}],"file":[{"date_created":"2018-10-31T16:58:18Z","creator":"feldi","file_id":"5227","content_type":"application/pdf","success":1,"file_name":"LIPIcs-ICALP-2018-51.pdf","access_level":"closed","file_size":723824,"relation":"main_file","date_updated":"2018-10-31T16:58:18Z"}],"date_created":"2018-04-24T15:21:56Z"},{"date_updated":"2022-01-06T06:56:39Z","publication_status":"published","title":"Online Facility Location with Mobile Facilities","year":"2018","author":[{"id":"22704","full_name":"Feldkord, Björn","last_name":"Feldkord","first_name":"Björn"},{"id":"15523","first_name":"Friedhelm","last_name":"Meyer auf der Heide","full_name":"Meyer auf der Heide, Friedhelm"}],"doi":"10.1145/3210377.3210389","language":[{"iso":"eng"}],"publication":"Proceedings of the 30th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA)","type":"conference","department":[{"_id":"63"}],"file":[{"success":1,"content_type":"application/pdf","file_id":"5280","date_updated":"2018-11-02T14:42:33Z","relation":"main_file","access_level":"closed","file_size":1207546,"file_name":"p373-feldkord.pdf","date_created":"2018-11-02T14:42:33Z","creator":"ups"}],"date_created":"2018-04-25T08:49:43Z","has_accepted_license":"1","status":"public","conference":{"location":"Wien","name":"SPAA'18"},"ddc":["000"],"user_id":"477","page":"373 - 381 ","publisher":"ACM","_id":"2485","project":[{"_id":"1","name":"SFB 901"},{"_id":"2","name":"SFB 901 - Project Area A"},{"name":"SFB 901 - Subproject A1","_id":"5"}],"file_date_updated":"2018-11-02T14:42:33Z","citation":{"mla":"Feldkord, Björn, and Friedhelm Meyer auf der Heide. “Online Facility Location with Mobile Facilities.” <i>Proceedings of the 30th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA)</i>, ACM, 2018, pp. 373–81, doi:<a href=\"https://doi.org/10.1145/3210377.3210389\">10.1145/3210377.3210389</a>.","apa":"Feldkord, B., &#38; Meyer auf der Heide, F. (2018). Online Facility Location with Mobile Facilities. In <i>Proceedings of the 30th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA)</i> (pp. 373–381). Wien: ACM. <a href=\"https://doi.org/10.1145/3210377.3210389\">https://doi.org/10.1145/3210377.3210389</a>","ieee":"B. Feldkord and F. Meyer auf der Heide, “Online Facility Location with Mobile Facilities,” in <i>Proceedings of the 30th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA)</i>, Wien, 2018, pp. 373–381.","short":"B. Feldkord, F. Meyer auf der Heide, in: Proceedings of the 30th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA), ACM, 2018, pp. 373–381.","ama":"Feldkord B, Meyer auf der Heide F. Online Facility Location with Mobile Facilities. In: <i>Proceedings of the 30th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA)</i>. ACM; 2018:373-381. doi:<a href=\"https://doi.org/10.1145/3210377.3210389\">10.1145/3210377.3210389</a>","chicago":"Feldkord, Björn, and Friedhelm Meyer auf der Heide. “Online Facility Location with Mobile Facilities.” In <i>Proceedings of the 30th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA)</i>, 373–81. ACM, 2018. <a href=\"https://doi.org/10.1145/3210377.3210389\">https://doi.org/10.1145/3210377.3210389</a>.","bibtex":"@inproceedings{Feldkord_Meyer auf der Heide_2018, title={Online Facility Location with Mobile Facilities}, DOI={<a href=\"https://doi.org/10.1145/3210377.3210389\">10.1145/3210377.3210389</a>}, booktitle={Proceedings of the 30th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA)}, publisher={ACM}, author={Feldkord, Björn and Meyer auf der Heide, Friedhelm}, year={2018}, pages={373–381} }"}},{"file_date_updated":"2021-09-29T12:21:24Z","supervisor":[{"id":"15523","full_name":"Meyer auf der Heide, Friedhelm","first_name":"Friedhelm","last_name":"Meyer auf der Heide"}],"citation":{"ama":"Liedtke DJ. <i>Influence of Stationary Robots on Continuous Robot Formation Problems</i>.; 2018.","bibtex":"@book{Liedtke_2018, title={Influence of Stationary Robots on Continuous Robot Formation Problems}, author={Liedtke, David Jan}, year={2018} }","mla":"Liedtke, David Jan. <i>Influence of Stationary Robots on Continuous Robot Formation Problems</i>. 2018.","chicago":"Liedtke, David Jan. <i>Influence of Stationary Robots on Continuous Robot Formation Problems</i>, 2018.","short":"D.J. Liedtke, Influence of Stationary Robots on Continuous Robot Formation Problems, 2018.","apa":"Liedtke, D. J. (2018). <i>Influence of Stationary Robots on Continuous Robot Formation Problems</i>.","ieee":"D. J. Liedtke, <i>Influence of Stationary Robots on Continuous Robot Formation Problems</i>. 2018."},"abstract":[{"lang":"eng","text":"We consider a group of $n$ autonomous mobile robots of which $m$ are stationary thus cannot move. Robots are represented by points in the Euclidean plane. They have no memory, do not communicate or share a common coordinate system and they move solely based on the positioning of other robots within their limited viewing range of 1. The goal is to gather the robots inside of the convex hull of all stationary robots. A variant of this problem, the general gathering problem, has been studied in various different time models. In this work, we consider a continuous time model, where robots continuously observe their neighbors, compute the next target of movement and move with a speed limit of 1 at any time. Regarding the robots' local strategy, we only study contracting algorithms in which every robot that is positioned on the border of the convex hull of all robots moves into this hull. We present a time bound of $\\mathcal{O}(nd)$ for any general contracting algorithms in a configuration with only a single stationary robot. For configurations with more stationary robots, we prove that robots converge against the convex hull of all stationary robots and that no upper bound on the runtime exists. For the specific contracting algorithms Go-To-The-Left, Go-On-Bisector and Go-To-The-Middle, we provide linear time bounds."}],"file":[{"date_created":"2021-09-29T12:21:24Z","creator":"liedtke","content_type":"application/pdf","file_id":"25124","date_updated":"2021-09-29T12:21:24Z","relation":"main_file","access_level":"local","file_size":6746519,"file_name":"Bachelor - Thesis.pdf"}],"date_created":"2021-09-29T12:30:40Z","type":"bachelorsthesis","department":[{"_id":"63"}],"status":"public","year":"2018","title":"Influence of Stationary Robots on Continuous Robot Formation Problems","author":[{"full_name":"Liedtke, David Jan","first_name":"David Jan","last_name":"Liedtke","id":"55557"}],"date_updated":"2022-01-06T06:56:52Z","has_accepted_license":"1","language":[{"iso":"eng"}],"_id":"25121","ddc":["000"],"user_id":"55557"},{"publication":"arXiv:1803.05796","citation":{"mla":"Pfannschmidt, Karlson, et al. “Deep Architectures for Learning Context-Dependent Ranking Functions.” <i>ArXiv:1803.05796</i>, 2018.","ama":"Pfannschmidt K, Gupta P, Hüllermeier E. Deep Architectures for Learning Context-dependent Ranking Functions. <i>arXiv:180305796</i>. 2018.","bibtex":"@article{Pfannschmidt_Gupta_Hüllermeier_2018, title={Deep Architectures for Learning Context-dependent Ranking Functions}, journal={arXiv:1803.05796}, author={Pfannschmidt, Karlson and Gupta, Pritha and Hüllermeier, Eyke}, year={2018} }","apa":"Pfannschmidt, K., Gupta, P., &#38; Hüllermeier, E. (2018). Deep Architectures for Learning Context-dependent Ranking Functions. <i>ArXiv:1803.05796</i>.","ieee":"K. Pfannschmidt, P. Gupta, and E. Hüllermeier, “Deep Architectures for Learning Context-dependent Ranking Functions,” <i>arXiv:1803.05796</i>. 2018.","chicago":"Pfannschmidt, Karlson, Pritha Gupta, and Eyke Hüllermeier. “Deep Architectures for Learning Context-Dependent Ranking Functions.” <i>ArXiv:1803.05796</i>, 2018.","short":"K. Pfannschmidt, P. Gupta, E. Hüllermeier, ArXiv:1803.05796 (2018)."},"abstract":[{"lang":"eng","text":"Object ranking is an important problem in the realm of preference learning.\r\nOn the basis of training data in the form of a set of rankings of objects,\r\nwhich are typically represented as feature vectors, the goal is to learn a\r\nranking function that predicts a linear order of any new set of objects.\r\nCurrent approaches commonly focus on ranking by scoring, i.e., on learning an\r\nunderlying latent utility function that seeks to capture the inherent utility\r\nof each object. These approaches, however, are not able to take possible\r\neffects of context-dependence into account, where context-dependence means that\r\nthe utility or usefulness of an object may also depend on what other objects\r\nare available as alternatives. In this paper, we formalize the problem of\r\ncontext-dependent ranking and present two general approaches based on two\r\nnatural representations of context-dependent ranking functions. Both approaches\r\nare instantiated by means of appropriate neural network architectures, which\r\nare evaluated on suitable benchmark task."}],"project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"date_created":"2020-09-17T10:53:39Z","type":"preprint","department":[{"_id":"7"},{"_id":"355"}],"year":"2018","title":"Deep Architectures for Learning Context-dependent Ranking Functions","status":"public","author":[{"first_name":"Karlson","last_name":"Pfannschmidt","full_name":"Pfannschmidt, Karlson"},{"full_name":"Gupta, Pritha","first_name":"Pritha","last_name":"Gupta"},{"last_name":"Hüllermeier","first_name":"Eyke","full_name":"Hüllermeier, Eyke"}],"date_updated":"2022-01-06T06:54:06Z","language":[{"iso":"eng"}],"_id":"19524","user_id":"13472"}]