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DECHEMA-Jahrestagung der Biotechnologen }, title={Numerische Simulation von Gravidestillationsapparaten zur Trennung eines binären Ethanol/Wasser-Gemisches}, booktitle={10. ProcessNet-Jahrestagung und 34. DECHEMA-Jahrestagung der Biotechnologen }, author={Wende, Marc and Philippi, Kai and Kenig, Eugeny}, year={2020}, collection={10. ProcessNet-Jahrestagung und 34. DECHEMA-Jahrestagung der Biotechnologen } }","mla":"Wende, Marc, et al. “Numerische Simulation von Gravidestillationsapparaten Zur Trennung Eines Binären Ethanol/Wasser-Gemisches.” <i>10. ProcessNet-Jahrestagung Und 34. DECHEMA-Jahrestagung Der Biotechnologen </i>, 2020.","apa":"Wende, M., Philippi, K., &#38; Kenig, E. (2020). Numerische Simulation von Gravidestillationsapparaten zur Trennung eines binären Ethanol/Wasser-Gemisches. <i>10. ProcessNet-Jahrestagung Und 34. DECHEMA-Jahrestagung Der Biotechnologen </i>. 10. ProcessNet-Jahrestagung und 34. DECHEMA-Jahrestagung der Biotechnologen 2020, Aachen.","ieee":"M. Wende, K. Philippi, and E. Kenig, “Numerische Simulation von Gravidestillationsapparaten zur Trennung eines binären Ethanol/Wasser-Gemisches,” presented at the 10. ProcessNet-Jahrestagung und 34. DECHEMA-Jahrestagung der Biotechnologen 2020, Aachen, 2020."},"type":"conference","department":[{"_id":"9"},{"_id":"145"}],"date_created":"2020-09-28T14:09:47Z","date_updated":"2022-01-06T06:54:11Z","status":"public","title":"Numerische Simulation von Gravidestillationsapparaten zur Trennung eines binären Ethanol/Wasser-Gemisches","year":"2020","author":[{"id":"71302","full_name":"Wende, Marc","first_name":"Marc","last_name":"Wende"},{"full_name":"Philippi, Kai","first_name":"Kai","last_name":"Philippi"},{"id":"665","last_name":"Kenig","first_name":"Eugeny","full_name":"Kenig, Eugeny"}],"conference":{"end_date":"24.09.2020","start_date":"21.09.2020","name":"10. ProcessNet-Jahrestagung und 34. 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DECHEMA-Jahrestagung der Biotechnologen "},{"title":"Active Business Model Development Tools: Design Requirements","status":"public","year":"2020","author":[{"id":"36372","first_name":"Daniel","last_name":"Szopinski","full_name":"Szopinski, Daniel"}],"conference":{"name":"15th International Conference on Design Science Research in Information Systems and Technology (DESRIST)","location":"Virtual Conference/Workshop"},"date_updated":"2022-01-06T06:54:11Z","has_accepted_license":"1","language":[{"iso":"eng"}],"_id":"19739","user_id":"16205","ddc":["040"],"file_date_updated":"2020-09-29T07:46:30Z","publication":"Proceedings of the 15th International Conference on Design Science Research in Information Systems and Technology (DESRIST)","citation":{"chicago":"Szopinski, Daniel. “Active Business Model Development Tools: Design Requirements.” In <i>Proceedings of the 15th International Conference on Design Science Research in Information Systems and Technology (DESRIST)</i>, 2020.","ama":"Szopinski D. Active Business Model Development Tools: Design Requirements. In: <i>Proceedings of the 15th International Conference on Design Science Research in Information Systems and Technology (DESRIST)</i>. ; 2020.","short":"D. Szopinski, in: Proceedings of the 15th International Conference on Design Science Research in Information Systems and Technology (DESRIST), 2020.","bibtex":"@inproceedings{Szopinski_2020, title={Active Business Model Development Tools: Design Requirements}, booktitle={Proceedings of the 15th International Conference on Design Science Research in Information Systems and Technology (DESRIST)}, author={Szopinski, Daniel}, year={2020} }","apa":"Szopinski, D. (2020). Active Business Model Development Tools: Design Requirements. In <i>Proceedings of the 15th International Conference on Design Science Research in Information Systems and Technology (DESRIST)</i>. Virtual Conference/Workshop.","mla":"Szopinski, Daniel. “Active Business Model Development Tools: Design Requirements.” <i>Proceedings of the 15th International Conference on Design Science Research in Information Systems and Technology (DESRIST)</i>, 2020.","ieee":"D. Szopinski, “Active Business Model Development Tools: Design Requirements,” in <i>Proceedings of the 15th International Conference on Design Science Research in Information Systems and Technology (DESRIST)</i>, Virtual Conference/Workshop, 2020."},"project":[{"_id":"1","name":"SFB 901"},{"name":"SFB 901 - Project Area C","_id":"4"},{"_id":"17","name":"SFB 901 - Subproject C5"}],"file":[{"creator":"dsz","date_created":"2020-09-29T07:46:30Z","relation":"main_file","date_updated":"2020-09-29T07:46:30Z","file_name":"DESRIST2020_ABMDT_REVISED.pdf","access_level":"closed","file_size":194137,"file_id":"19762","content_type":"application/pdf","success":1}],"date_created":"2020-09-28T14:23:55Z","type":"conference","department":[{"_id":"276"}]},{"language":[{"iso":"eng"}],"_id":"19741","ddc":["040"],"user_id":"16205","conference":{"name":"41st International Conference on Information Systems (ICIS)","location":"Virtual Conference/Workshop"},"author":[{"id":"36372","full_name":"Szopinski, Daniel","first_name":"Daniel","last_name":"Szopinski"}],"title":"Exploring design principles for stimuli in business model development tools","status":"public","year":"2020","has_accepted_license":"1","date_updated":"2022-01-06T06:54:12Z","date_created":"2020-09-28T14:28:27Z","file":[{"file_id":"20216","content_type":"application/pdf","success":1,"file_name":"ICIS2020_BMDT_ShortPaper_RevisedManuscript_final.pdf","access_level":"closed","file_size":292196,"relation":"main_file","date_updated":"2020-10-27T15:05:49Z","date_created":"2020-10-27T15:05:49Z","creator":"dsz"}],"department":[{"_id":"276"}],"type":"conference","citation":{"chicago":"Szopinski, Daniel. “Exploring Design Principles for Stimuli in Business Model Development Tools.” In <i>Proceedings of the 41st International Conference on Information Systems (ICIS)</i>, 2020.","short":"D. Szopinski, in: Proceedings of the 41st International Conference on Information Systems (ICIS), 2020.","ieee":"D. Szopinski, “Exploring design principles for stimuli in business model development tools,” in <i>Proceedings of the 41st International Conference on Information Systems (ICIS)</i>, Virtual Conference/Workshop, 2020.","apa":"Szopinski, D. (2020). Exploring design principles for stimuli in business model development tools. In <i>Proceedings of the 41st International Conference on Information Systems (ICIS)</i>. Virtual Conference/Workshop.","bibtex":"@inproceedings{Szopinski_2020, title={Exploring design principles for stimuli in business model development tools}, booktitle={Proceedings of the 41st International Conference on Information Systems (ICIS)}, author={Szopinski, Daniel}, year={2020} }","ama":"Szopinski D. Exploring design principles for stimuli in business model development tools. In: <i>Proceedings of the 41st International Conference on Information Systems (ICIS)</i>. ; 2020.","mla":"Szopinski, Daniel. “Exploring Design Principles for Stimuli in Business Model Development Tools.” <i>Proceedings of the 41st International Conference on Information Systems (ICIS)</i>, 2020."},"publication":"Proceedings of the 41st International Conference on Information Systems (ICIS)","file_date_updated":"2020-10-27T15:05:49Z","project":[{"_id":"1","name":"SFB 901"},{"_id":"4","name":"SFB 901 - Project Area C"},{"_id":"17","name":"SFB 901 - Subproject C5"}]},{"_id":"19743","language":[{"iso":"ger"}],"user_id":"22488","year":"2020","title":"Methodenentwicklung zum Entfügen von Stahl-Klebverbindungen bei tiefen Temperaturen","status":"public","author":[{"last_name":"Ditter","first_name":"Jan","full_name":"Ditter, Jan","id":"22488"}],"publication_identifier":{"isbn":["978-3-8440-7530-4"]},"publication_status":"published","date_updated":"2022-01-06T06:54:12Z","date_created":"2020-09-28T14:38:12Z","type":"dissertation","department":[{"_id":"157"}],"citation":{"bibtex":"@book{Ditter_2020, title={Methodenentwicklung zum Entfügen von Stahl-Klebverbindungen bei tiefen Temperaturen}, author={Ditter, Jan}, year={2020} }","ama":"Ditter J. <i>Methodenentwicklung zum Entfügen von Stahl-Klebverbindungen bei tiefen Temperaturen</i>.; 2020.","mla":"Ditter, Jan. <i>Methodenentwicklung zum Entfügen von Stahl-Klebverbindungen bei tiefen Temperaturen</i>. 2020.","short":"J. Ditter, Methodenentwicklung zum Entfügen von Stahl-Klebverbindungen bei tiefen Temperaturen, 2020.","chicago":"Ditter, Jan. <i>Methodenentwicklung zum Entfügen von Stahl-Klebverbindungen bei tiefen Temperaturen</i>, 2020.","ieee":"J. Ditter, <i>Methodenentwicklung zum Entfügen von Stahl-Klebverbindungen bei tiefen Temperaturen</i>. 2020.","apa":"Ditter, J. (2020). <i>Methodenentwicklung zum Entfügen von Stahl-Klebverbindungen bei tiefen Temperaturen</i>."},"supervisor":[{"full_name":"Meschut, Gerson","last_name":"Meschut","first_name":"Gerson"}]},{"date_created":"2020-09-29T07:03:09Z","department":[{"_id":"157"}],"type":"journal_article","citation":{"chicago":"Ditter, Jan, Tobias Aubel, and Gerson Meschut. “Simple Determination of Fast Curing Parameters for Bonded Structures.” <i>Adhesion ADHESIVES + SEALANTS</i>, no. 1 (2020).","short":"J. Ditter, T. Aubel, G. Meschut, Adhesion ADHESIVES + SEALANTS (2020).","ieee":"J. Ditter, T. Aubel, and G. Meschut, “Simple Determination of Fast Curing Parameters for Bonded Structures,” <i>adhesion ADHESIVES + SEALANTS</i>, no. 1, 2020.","apa":"Ditter, J., Aubel, T., &#38; Meschut, G. (2020). Simple Determination of Fast Curing Parameters for Bonded Structures. <i>Adhesion ADHESIVES + SEALANTS</i>, (1).","bibtex":"@article{Ditter_Aubel_Meschut_2020, title={Simple Determination of Fast Curing Parameters for Bonded Structures}, number={1}, journal={adhesion ADHESIVES + SEALANTS}, author={Ditter, Jan and Aubel, Tobias and Meschut, Gerson}, year={2020} }","ama":"Ditter J, Aubel T, Meschut G. Simple Determination of Fast Curing Parameters for Bonded Structures. <i>adhesion ADHESIVES + SEALANTS</i>. 2020;(1).","mla":"Ditter, Jan, et al. “Simple Determination of Fast Curing Parameters for Bonded Structures.” <i>Adhesion ADHESIVES + SEALANTS</i>, no. 1, 2020."},"issue":"1","publication":"adhesion ADHESIVES + SEALANTS","language":[{"iso":"eng"}],"_id":"19753","user_id":"22488","author":[{"id":"22488","full_name":"Ditter, Jan","first_name":"Jan","last_name":"Ditter"},{"last_name":"Aubel","first_name":"Tobias","full_name":"Aubel, Tobias"},{"full_name":"Meschut, Gerson","first_name":"Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246","id":"32056"}],"year":"2020","title":"Simple Determination of Fast Curing Parameters for Bonded Structures","status":"public","date_updated":"2022-01-06T06:54:12Z"},{"title":"Toss a Coin to your Host - How Guests End up Paying for the Cost of Regulatory Policies","status":"public","year":"2020","conference":{"location":"Virtual Conference/Workshop","name":"41th International Conference on Information Systems (ICIS)"},"author":[{"full_name":"Müller, Michelle","last_name":"Müller","first_name":"Michelle","id":"50286"},{"full_name":"Neumann, Jürgen","last_name":"Neumann","first_name":"Jürgen","id":"32456"},{"id":"14368","first_name":"Dominik","last_name":"Gutt","full_name":"Gutt, Dominik"},{"id":"21117","first_name":"Dennis","last_name":"Kundisch","full_name":"Kundisch, Dennis"}],"date_updated":"2022-01-06T06:54:12Z","language":[{"iso":"eng"}],"_id":"19782","user_id":"16205","publication":"Proceedings of the 41th International Conference on Information Systems (ICIS)","citation":{"ieee":"M. Müller, J. Neumann, D. Gutt, and D. Kundisch, “Toss a Coin to your Host - How Guests End up Paying for the Cost of Regulatory Policies,” in <i>Proceedings of the 41th International Conference on Information Systems (ICIS)</i>, Virtual Conference/Workshop, 2020.","apa":"Müller, M., Neumann, J., Gutt, D., &#38; Kundisch, D. (2020). Toss a Coin to your Host - How Guests End up Paying for the Cost of Regulatory Policies. In <i>Proceedings of the 41th International Conference on Information Systems (ICIS)</i>. Virtual Conference/Workshop.","short":"M. Müller, J. Neumann, D. Gutt, D. Kundisch, in: Proceedings of the 41th International Conference on Information Systems (ICIS), 2020.","chicago":"Müller, Michelle, Jürgen Neumann, Dominik Gutt, and Dennis Kundisch. “Toss a Coin to Your Host - How Guests End up Paying for the Cost of Regulatory Policies.” In <i>Proceedings of the 41th International Conference on Information Systems (ICIS)</i>, 2020.","mla":"Müller, Michelle, et al. “Toss a Coin to Your Host - How Guests End up Paying for the Cost of Regulatory Policies.” <i>Proceedings of the 41th International Conference on Information Systems (ICIS)</i>, 2020.","bibtex":"@inproceedings{Müller_Neumann_Gutt_Kundisch_2020, title={Toss a Coin to your Host - How Guests End up Paying for the Cost of Regulatory Policies}, booktitle={Proceedings of the 41th International Conference on Information Systems (ICIS)}, author={Müller, Michelle and Neumann, Jürgen and Gutt, Dominik and Kundisch, Dennis}, year={2020} }","ama":"Müller M, Neumann J, Gutt D, Kundisch D. Toss a Coin to your Host - How Guests End up Paying for the Cost of Regulatory Policies. In: <i>Proceedings of the 41th International Conference on Information Systems (ICIS)</i>. ; 2020."},"project":[{"name":"SFB 901","_id":"1"},{"name":"SFB 901 - Project Area A","_id":"2"},{"name":"SFB 901 - Subproject A4","_id":"8"},{"_id":"4","name":"SFB 901 - Project Area C"},{"name":"SFB 901 - Subproject C5","_id":"17"}],"date_created":"2020-09-30T09:08:41Z","type":"conference","department":[{"_id":"276"}]},{"department":[{"_id":"613"}],"keyword":["Chalcopyrite absorber","Scanning tunneling spectroscopy","Electron backscatter diffraction","Density functional theory","Surface dipole"],"type":"journal_article","date_created":"2020-10-01T09:19:55Z","project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"abstract":[{"lang":"eng","text":"Individual grains of chalcopyrite solar cell absorbers can facet in different crystallographic directions at their surfaces. To gain a deeper understanding of the junction formation in these devices, we correlate variations in the surface facet orientation with the defect electronic properties. We use a combined analytical approach based on scanning tunneling spectroscopy (STS), scanning electron microscopy, and electron back scatter diffraction (EBSD), where we perform these experiments on identical surface areas as small as 2 × 2 µm2 with a lateral resolution well below 50 nm. The topography of the absorber surfaces indicates two main morphological features: micro-faceted, long basalt-like columns and their short nano-faceted terminations. Our STS results reveal that the long columns exhibit spectral signatures typical for the presence of pronounced oxidation-induced surface dipoles in conjunction with an increased density of electronic defect levels. In contrast, the nano-faceted terminations of the basalt-like columns are largely passivated in terms of electronic defect levels within the band gap region. Corresponding crystallographic data based on EBSD experiments show that the surface of the basalt-like columns can be assigned to intrinsically polar facet orientations, while the passivated terminations are assigned to non-polar planes. Ab-initio calculations suggest that the polar surfaces are more prone to oxidation and resulting O-induced defects, in comparison to non-polar planes. Our results emphasize the correlation between morphology, surface facet orientations and surface electronic properties. Furthermore, this work aids in gaining a fundamental understanding of oxidation induced lateral inhomogeneities in view of the p-n junction formation in chalcopyrite thin-film solar cells."}],"citation":{"chicago":"Elizabeth, Amala, Hauke Conradi, Sudhir K. Sahoo, Tim Kodalle, Christian A. Kaufmann, Thomas Kühne, Hossein Mirhosseini, Daniel Abou-Ras, and Harry Mönig. “Correlating Facet Orientation, Defect-Level Density and Dipole Layer Formation at the Surface of Polycrystalline CuInSe2 Thin Films.” <i>Acta Materialia</i> 200 (2020). <a href=\"https://doi.org/10.1016/j.actamat.2020.09.028\">https://doi.org/10.1016/j.actamat.2020.09.028</a>.","short":"A. Elizabeth, H. Conradi, S. K. Sahoo, T. Kodalle, C. A. Kaufmann, T. Kühne, H. Mirhosseini, D. Abou-Ras, H. Mönig, Acta Materialia 200 (2020).","ieee":"A. Elizabeth <i>et al.</i>, “Correlating facet orientation, defect-level density and dipole layer formation at the surface of polycrystalline CuInSe2 thin films,” <i>Acta Materialia</i>, vol. 200, 2020.","apa":"Elizabeth, A., Conradi, H., K. Sahoo, S., Kodalle, T., A. Kaufmann, C., Kühne, T., … Mönig, H. (2020). Correlating facet orientation, defect-level density and dipole layer formation at the surface of polycrystalline CuInSe2 thin films. <i>Acta Materialia</i>, <i>200</i>. <a href=\"https://doi.org/10.1016/j.actamat.2020.09.028\">https://doi.org/10.1016/j.actamat.2020.09.028</a>","bibtex":"@article{Elizabeth_Conradi_K. Sahoo_Kodalle_A. Kaufmann_Kühne_Mirhosseini_Abou-Ras_Mönig_2020, title={Correlating facet orientation, defect-level density and dipole layer formation at the surface of polycrystalline CuInSe2 thin films}, volume={200}, DOI={<a href=\"https://doi.org/10.1016/j.actamat.2020.09.028\">https://doi.org/10.1016/j.actamat.2020.09.028</a>}, journal={Acta Materialia}, author={Elizabeth, Amala and Conradi, Hauke and K. Sahoo, Sudhir and Kodalle, Tim and A. Kaufmann, Christian and Kühne, Thomas and Mirhosseini, Hossein and Abou-Ras, Daniel and Mönig, Harry}, year={2020} }","ama":"Elizabeth A, Conradi H, K. Sahoo S, et al. Correlating facet orientation, defect-level density and dipole layer formation at the surface of polycrystalline CuInSe2 thin films. <i>Acta Materialia</i>. 2020;200. doi:<a href=\"https://doi.org/10.1016/j.actamat.2020.09.028\">https://doi.org/10.1016/j.actamat.2020.09.028</a>","mla":"Elizabeth, Amala, et al. “Correlating Facet Orientation, Defect-Level Density and Dipole Layer Formation at the Surface of Polycrystalline CuInSe2 Thin Films.” <i>Acta Materialia</i>, vol. 200, 2020, doi:<a href=\"https://doi.org/10.1016/j.actamat.2020.09.028\">https://doi.org/10.1016/j.actamat.2020.09.028</a>."},"publication":"Acta Materialia","volume":200,"doi":"https://doi.org/10.1016/j.actamat.2020.09.028","user_id":"71692","_id":"19823","language":[{"iso":"eng"}],"intvolume":"       200","date_updated":"2022-01-06T06:54:13Z","publication_identifier":{"issn":["1359-6454"]},"author":[{"full_name":"Elizabeth, Amala","first_name":"Amala","last_name":"Elizabeth"},{"first_name":"Hauke","last_name":"Conradi","full_name":"Conradi, Hauke"},{"last_name":"K. Sahoo","first_name":"Sudhir","full_name":"K. Sahoo, Sudhir"},{"full_name":"Kodalle, Tim","first_name":"Tim","last_name":"Kodalle"},{"first_name":"Christian","last_name":"A. Kaufmann","full_name":"A. Kaufmann, Christian"},{"full_name":"Kühne, Thomas","last_name":"Kühne","first_name":"Thomas","id":"49079"},{"first_name":"Hossein","orcid":"https://orcid.org/0000-0001-6179-1545","last_name":"Mirhosseini","full_name":"Mirhosseini, Hossein","id":"71051"},{"last_name":"Abou-Ras","first_name":"Daniel","full_name":"Abou-Ras, Daniel"},{"full_name":"Mönig, Harry","first_name":"Harry","last_name":"Mönig"}],"status":"public","title":"Correlating facet orientation, defect-level density and dipole layer formation at the surface of polycrystalline CuInSe2 thin films","year":"2020"},{"publication":"Proceedings of The 11th International Multi-Conference on Complexity, Informatics and Cybernetics (IMCIC 2020)","citation":{"ieee":"M. Meyer, M. Frank, M. Massmann, and R. Dumitrescu, “Research and Consulting in Data-Driven Strategic Product Planning,” <i>Proceedings of The 11th International Multi-Conference on Complexity, Informatics and Cybernetics (IMCIC 2020)</i>, 2020.","apa":"Meyer, M., Frank, M., Massmann, M., &#38; Dumitrescu, R. (2020). Research and Consulting in Data-Driven Strategic Product Planning. <i>Proceedings of The 11th International Multi-Conference on Complexity, Informatics and Cybernetics (IMCIC 2020)</i>.","chicago":"Meyer, Maurice, Maximilian Frank, Melina Massmann, and Roman Dumitrescu. “Research and Consulting in Data-Driven Strategic Product Planning.” <i>Proceedings of The 11th International Multi-Conference on Complexity, Informatics and Cybernetics (IMCIC 2020)</i>, 2020.","short":"M. Meyer, M. Frank, M. Massmann, R. Dumitrescu, Proceedings of The 11th International Multi-Conference on Complexity, Informatics and Cybernetics (IMCIC 2020) (2020).","mla":"Meyer, Maurice, et al. “Research and Consulting in Data-Driven Strategic Product Planning.” <i>Proceedings of The 11th International Multi-Conference on Complexity, Informatics and Cybernetics (IMCIC 2020)</i>, 2020.","bibtex":"@article{Meyer_Frank_Massmann_Dumitrescu_2020, title={Research and Consulting in Data-Driven Strategic Product Planning}, journal={Proceedings of The 11th International Multi-Conference on Complexity, Informatics and Cybernetics (IMCIC 2020)}, author={Meyer, Maurice and Frank, Maximilian and Massmann, Melina and Dumitrescu, Roman}, year={2020} }","ama":"Meyer M, Frank M, Massmann M, Dumitrescu R. Research and Consulting in Data-Driven Strategic Product Planning. <i>Proceedings of The 11th International Multi-Conference on Complexity, Informatics and Cybernetics (IMCIC 2020)</i>. 2020."},"date_created":"2020-10-02T16:19:50Z","type":"journal_article","department":[{"_id":"563"}],"title":"Research and Consulting in Data-Driven Strategic Product Planning","year":"2020","status":"public","author":[{"full_name":"Meyer, Maurice","first_name":"Maurice","last_name":"Meyer","orcid":"0000-0003-0606-7321","id":"77201"},{"full_name":"Frank, Maximilian","first_name":"Maximilian","last_name":"Frank"},{"full_name":"Massmann, Melina","last_name":"Massmann","first_name":"Melina"},{"full_name":"Dumitrescu, Roman","last_name":"Dumitrescu","first_name":"Roman","id":"16190"}],"date_updated":"2022-01-06T06:54:14Z","article_type":"original","_id":"19864","language":[{"iso":"eng"}],"user_id":"77201"},{"user_id":"77201","volume":18,"page":"55-61","_id":"19866","language":[{"iso":"eng"}],"date_updated":"2022-01-06T06:54:14Z","intvolume":"        18","article_type":"original","title":"Research and Consulting in Data-Driven Strategic Product Planning","year":"2020","status":"public","author":[{"id":"77201","first_name":"Maurice","last_name":"Meyer","orcid":"0000-0003-0606-7321","full_name":"Meyer, Maurice"},{"full_name":"Frank, Maximilian","first_name":"Maximilian","last_name":"Frank"},{"full_name":"Massmann, Melina","first_name":"Melina","last_name":"Massmann"},{"full_name":"Dumitrescu, Roman","first_name":"Roman","last_name":"Dumitrescu","id":"16190"}],"type":"journal_article","department":[{"_id":"563"}],"date_created":"2020-10-02T16:21:47Z","issue":"2","publication":"Journal of Systemics, Cybernetics and Informatics","citation":{"mla":"Meyer, Maurice, et al. “Research and Consulting in Data-Driven Strategic Product Planning.” <i>Journal of Systemics, Cybernetics and Informatics</i>, vol. 18, no. 2, 2020, pp. 55–61.","bibtex":"@article{Meyer_Frank_Massmann_Dumitrescu_2020, title={Research and Consulting in Data-Driven Strategic Product Planning}, volume={18}, number={2}, journal={Journal of Systemics, Cybernetics and Informatics}, author={Meyer, Maurice and Frank, Maximilian and Massmann, Melina and Dumitrescu, Roman}, year={2020}, pages={55–61} }","ama":"Meyer M, Frank M, Massmann M, Dumitrescu R. Research and Consulting in Data-Driven Strategic Product Planning. <i>Journal of Systemics, Cybernetics and Informatics</i>. 2020;18(2):55-61.","ieee":"M. Meyer, M. Frank, M. Massmann, and R. Dumitrescu, “Research and Consulting in Data-Driven Strategic Product Planning,” <i>Journal of Systemics, Cybernetics and Informatics</i>, vol. 18, no. 2, pp. 55–61, 2020.","apa":"Meyer, M., Frank, M., Massmann, M., &#38; Dumitrescu, R. (2020). Research and Consulting in Data-Driven Strategic Product Planning. <i>Journal of Systemics, Cybernetics and Informatics</i>, <i>18</i>(2), 55–61.","short":"M. Meyer, M. Frank, M. Massmann, R. Dumitrescu, Journal of Systemics, Cybernetics and Informatics 18 (2020) 55–61.","chicago":"Meyer, Maurice, Maximilian Frank, Melina Massmann, and Roman Dumitrescu. “Research and Consulting in Data-Driven Strategic Product Planning.” <i>Journal of Systemics, Cybernetics and Informatics</i> 18, no. 2 (2020): 55–61."}},{"_id":"19895","language":[{"iso":"eng"}],"page":"503-522","volume":179,"doi":"10.1016/j.jebo.2020.09.020","user_id":"67265","author":[{"last_name":"Steiger","first_name":"Sören","full_name":"Steiger, Sören"},{"id":"67265","orcid":" https://orcid.org/0000-0001-5740-2420","last_name":"Pelster","first_name":"Matthias","full_name":"Pelster, Matthias"}],"publication_identifier":{"issn":["0167-2681"]},"year":"2020","status":"public","title":"Social interactions and asset pricing bubbles","intvolume":"       179","date_updated":"2022-01-06T06:54:14Z","publication_status":"published","date_created":"2020-10-06T06:17:16Z","department":[{"_id":"186"},{"_id":"578"}],"type":"journal_article","citation":{"ieee":"S. Steiger and M. Pelster, “Social interactions and asset pricing bubbles,” <i>Journal of Economic Behavior &#38; Organization</i>, vol. 179, pp. 503–522, 2020.","apa":"Steiger, S., &#38; Pelster, M. (2020). Social interactions and asset pricing bubbles. <i>Journal of Economic Behavior &#38; Organization</i>, <i>179</i>, 503–522. <a href=\"https://doi.org/10.1016/j.jebo.2020.09.020\">https://doi.org/10.1016/j.jebo.2020.09.020</a>","chicago":"Steiger, Sören, and Matthias Pelster. “Social Interactions and Asset Pricing Bubbles.” <i>Journal of Economic Behavior &#38; Organization</i> 179 (2020): 503–22. <a href=\"https://doi.org/10.1016/j.jebo.2020.09.020\">https://doi.org/10.1016/j.jebo.2020.09.020</a>.","short":"S. Steiger, M. Pelster, Journal of Economic Behavior &#38; Organization 179 (2020) 503–522.","mla":"Steiger, Sören, and Matthias Pelster. “Social Interactions and Asset Pricing Bubbles.” <i>Journal of Economic Behavior &#38; Organization</i>, vol. 179, 2020, pp. 503–22, doi:<a href=\"https://doi.org/10.1016/j.jebo.2020.09.020\">10.1016/j.jebo.2020.09.020</a>.","bibtex":"@article{Steiger_Pelster_2020, title={Social interactions and asset pricing bubbles}, volume={179}, DOI={<a href=\"https://doi.org/10.1016/j.jebo.2020.09.020\">10.1016/j.jebo.2020.09.020</a>}, journal={Journal of Economic Behavior &#38; Organization}, author={Steiger, Sören and Pelster, Matthias}, year={2020}, pages={503–522} }","ama":"Steiger S, Pelster M. Social interactions and asset pricing bubbles. <i>Journal of Economic Behavior &#38; Organization</i>. 2020;179:503-522. doi:<a href=\"https://doi.org/10.1016/j.jebo.2020.09.020\">10.1016/j.jebo.2020.09.020</a>"},"publication":"Journal of Economic Behavior & Organization"},{"type":"conference","department":[{"_id":"63"}],"date_created":"2020-10-06T07:27:10Z","abstract":[{"text":"Most existing robot formation problems seek a target formation of a certain\r\nminimal and, thus, efficient structure. Examples include the Gathering\r\nand the Chain-Formation problem. In this work, we study formation problems that\r\ntry to reach a maximal structure, supporting for example an efficient\r\ncoverage in exploration scenarios. A recent example is the NASA Shapeshifter\r\nproject, which describes how the robots form a relay chain along which gathered\r\ndata from extraterrestrial cave explorations may be sent to a home base.\r\n  As a first step towards understanding such maximization tasks, we introduce\r\nand study the Max-Chain-Formation problem, where $n$ robots are ordered along a\r\nwinding, potentially self-intersecting chain and must form a connected,\r\nstraight line of maximal length connecting its two endpoints. We propose and\r\nanalyze strategies in a discrete and in a continuous time model. In the\r\ndiscrete case, we give a complete analysis if all robots are initially\r\ncollinear, showing that the worst-case time to reach an\r\n$\\varepsilon$-approximation is upper bounded by $\\mathcal{O}(n^2 \\cdot \\log\r\n(n/\\varepsilon))$ and lower bounded by $\\Omega(n^2 \\cdot~\\log\r\n(1/\\varepsilon))$. If one endpoint of the chain remains stationary, this result\r\ncan be extended to the non-collinear case. If both endpoints move, we identify\r\na family of instances whose runtime is unbounded. For the continuous model, we\r\ngive a strategy with an optimal runtime bound of $\\Theta(n)$. Avoiding an\r\nunbounded runtime similar to the discrete case relies crucially on a\r\ncounter-intuitive aspect of the strategy: slowing down the endpoints while all\r\nother robots move at full speed. Surprisingly, we can show that a similar trick\r\ndoes not work in the discrete model.","lang":"eng"}],"publication":"Stabilization, Safety, and Security of Distributed Systems - 22nd International Symposium, SSS 2020, Austin, Texas, USA, November 18-21, 2020, Proceedings","doi":"10.1007/978-3-030-64348-5_6","language":[{"iso":"eng"}],"series_title":"Lecture Notes in Computer Science (LNCS)","publication_status":"published","date_updated":"2022-01-06T06:54:14Z","intvolume":"     12514","year":"2020","title":"A Discrete and Continuous Study of the Max-Chain-Formation Problem – Slow Down to Speed Up","publication_identifier":{"isbn":["978-3-030-64347-8"]},"author":[{"last_name":"Castenow","first_name":"Jannik","full_name":"Castenow, Jannik","id":"38705"},{"last_name":"Kling","first_name":"Peter","full_name":"Kling, Peter"},{"id":"39241","full_name":"Knollmann, Till","last_name":"Knollmann","orcid":"0000-0003-2014-4696","first_name":"Till"},{"id":"15523","first_name":"Friedhelm","last_name":"Meyer auf der Heide","full_name":"Meyer auf der Heide, Friedhelm"}],"external_id":{"arxiv":["2010.02043 "]},"citation":{"bibtex":"@inproceedings{Castenow_Kling_Knollmann_Meyer auf der Heide_2020, series={Lecture Notes in Computer Science (LNCS)}, title={A Discrete and Continuous Study of the Max-Chain-Formation Problem – Slow Down to Speed Up}, volume={12514}, DOI={<a href=\"https://doi.org/10.1007/978-3-030-64348-5_6\">10.1007/978-3-030-64348-5_6</a>}, booktitle={Stabilization, Safety, and Security of Distributed Systems - 22nd International Symposium, SSS 2020, Austin, Texas, USA, November 18-21, 2020, Proceedings}, publisher={Springer}, author={Castenow, Jannik and Kling, Peter and Knollmann, Till and Meyer auf der Heide, Friedhelm}, editor={Devismes , Stéphane  and Mittal, Neeraj Editors}, year={2020}, pages={65–80}, collection={Lecture Notes in Computer Science (LNCS)} }","ama":"Castenow J, Kling P, Knollmann T, Meyer auf der Heide F. A Discrete and Continuous Study of the Max-Chain-Formation Problem – Slow Down to Speed Up. In: Devismes  S, Mittal N, eds. <i>Stabilization, Safety, and Security of Distributed Systems - 22nd International Symposium, SSS 2020, Austin, Texas, USA, November 18-21, 2020, Proceedings</i>. Vol 12514. Lecture Notes in Computer Science (LNCS). Springer; 2020:65-80. doi:<a href=\"https://doi.org/10.1007/978-3-030-64348-5_6\">10.1007/978-3-030-64348-5_6</a>","mla":"Castenow, Jannik, et al. “A Discrete and Continuous Study of the Max-Chain-Formation Problem – Slow Down to Speed Up.” <i>Stabilization, Safety, and Security of Distributed Systems - 22nd International Symposium, SSS 2020, Austin, Texas, USA, November 18-21, 2020, Proceedings</i>, edited by Stéphane  Devismes  and Neeraj  Mittal, vol. 12514, Springer, 2020, pp. 65–80, doi:<a href=\"https://doi.org/10.1007/978-3-030-64348-5_6\">10.1007/978-3-030-64348-5_6</a>.","short":"J. Castenow, P. Kling, T. Knollmann, F. Meyer auf der Heide, in: S. Devismes , N. Mittal (Eds.), Stabilization, Safety, and Security of Distributed Systems - 22nd International Symposium, SSS 2020, Austin, Texas, USA, November 18-21, 2020, Proceedings, Springer, 2020, pp. 65–80.","chicago":"Castenow, Jannik, Peter Kling, Till Knollmann, and Friedhelm Meyer auf der Heide. “A Discrete and Continuous Study of the Max-Chain-Formation Problem – Slow Down to Speed Up.” In <i>Stabilization, Safety, and Security of Distributed Systems - 22nd International Symposium, SSS 2020, Austin, Texas, USA, November 18-21, 2020, Proceedings</i>, edited by Stéphane  Devismes  and Neeraj  Mittal, 12514:65–80. Lecture Notes in Computer Science (LNCS). Springer, 2020. <a href=\"https://doi.org/10.1007/978-3-030-64348-5_6\">https://doi.org/10.1007/978-3-030-64348-5_6</a>.","ieee":"J. Castenow, P. Kling, T. Knollmann, and F. Meyer auf der Heide, “A Discrete and Continuous Study of the Max-Chain-Formation Problem – Slow Down to Speed Up,” in <i>Stabilization, Safety, and Security of Distributed Systems - 22nd International Symposium, SSS 2020, Austin, Texas, USA, November 18-21, 2020, Proceedings</i>, 2020, vol. 12514, pp. 65–80.","apa":"Castenow, J., Kling, P., Knollmann, T., &#38; Meyer auf der Heide, F. (2020). A Discrete and Continuous Study of the Max-Chain-Formation Problem – Slow Down to Speed Up. In S. Devismes  &#38; N. Mittal (Eds.), <i>Stabilization, Safety, and Security of Distributed Systems - 22nd International Symposium, SSS 2020, Austin, Texas, USA, November 18-21, 2020, Proceedings</i> (Vol. 12514, pp. 65–80). Springer. <a href=\"https://doi.org/10.1007/978-3-030-64348-5_6\">https://doi.org/10.1007/978-3-030-64348-5_6</a>"},"user_id":"38705","volume":12514,"editor":[{"first_name":"Stéphane ","last_name":"Devismes ","full_name":"Devismes , Stéphane "},{"first_name":"Neeraj ","last_name":"Mittal","full_name":"Mittal, Neeraj "}],"page":"65-80","publisher":"Springer","_id":"19899","status":"public"},{"department":[{"_id":"636"}],"type":"journal_article","date_created":"2020-10-06T16:31:46Z","abstract":[{"lang":"eng","text":"We show that symplectic integrators preserve bifurcations of Hamiltonian boundary value problems and that nonsymplectic integrators do not. We provide a universal description of the breaking of umbilic bifurcations by nonysmplectic integrators. We discover extra structure induced from certain types of boundary value problems, including classical Dirichlet problems, that is useful to locate bifurcations. Geodesics connecting two points are an example of a Hamiltonian boundary value problem, and we introduce the jet-RATTLE method, a symplectic integrator that easily computes geodesics and their bifurcations. Finally, we study the periodic pitchfork bifurcation, a codimension-1 bifurcation arising in integrable Hamiltonian systems. It is not preserved by either symplectic on nonsymplectic integrators, but in some circumstances symplecticity greatly reduces the error. "}],"extern":"1","publication":"Foundations of Computational Mathematics","issue":"6","doi":"10.1007/s10208-020-09454-z","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://rdcu.be/b79aB"}],"intvolume":"        20","article_type":"original","date_updated":"2022-01-06T06:54:14Z","publication_status":"published","author":[{"full_name":"McLachlan, Robert I","last_name":"McLachlan","first_name":"Robert I"},{"first_name":"Christian","last_name":"Offen","orcid":"https://orcid.org/0000-0002-5940-8057","full_name":"Offen, Christian","id":"85279"}],"year":"2020","title":"Preservation of Bifurcations of Hamiltonian Boundary Value Problems Under Discretisation","citation":{"apa":"McLachlan, R. I., &#38; Offen, C. (2020). Preservation of Bifurcations of Hamiltonian Boundary Value Problems Under Discretisation. <i>Foundations of Computational Mathematics</i>, <i>20</i>(6), 1363–1400. <a href=\"https://doi.org/10.1007/s10208-020-09454-z\">https://doi.org/10.1007/s10208-020-09454-z</a>","ieee":"R. I. McLachlan and C. Offen, “Preservation of Bifurcations of Hamiltonian Boundary Value Problems Under Discretisation,” <i>Foundations of Computational Mathematics</i>, vol. 20, no. 6, pp. 1363–1400, 2020.","short":"R.I. McLachlan, C. Offen, Foundations of Computational Mathematics 20 (2020) 1363–1400.","chicago":"McLachlan, Robert I, and Christian Offen. “Preservation of Bifurcations of Hamiltonian Boundary Value Problems Under Discretisation.” <i>Foundations of Computational Mathematics</i> 20, no. 6 (2020): 1363–1400. <a href=\"https://doi.org/10.1007/s10208-020-09454-z\">https://doi.org/10.1007/s10208-020-09454-z</a>.","mla":"McLachlan, Robert I., and Christian Offen. “Preservation of Bifurcations of Hamiltonian Boundary Value Problems Under Discretisation.” <i>Foundations of Computational Mathematics</i>, vol. 20, no. 6, 2020, pp. 1363–400, doi:<a href=\"https://doi.org/10.1007/s10208-020-09454-z\">10.1007/s10208-020-09454-z</a>.","ama":"McLachlan RI, Offen C. Preservation of Bifurcations of Hamiltonian Boundary Value Problems Under Discretisation. <i>Foundations of Computational Mathematics</i>. 2020;20(6):1363-1400. doi:<a href=\"https://doi.org/10.1007/s10208-020-09454-z\">10.1007/s10208-020-09454-z</a>","bibtex":"@article{McLachlan_Offen_2020, title={Preservation of Bifurcations of Hamiltonian Boundary Value Problems Under Discretisation}, volume={20}, DOI={<a href=\"https://doi.org/10.1007/s10208-020-09454-z\">10.1007/s10208-020-09454-z</a>}, number={6}, journal={Foundations of Computational Mathematics}, author={McLachlan, Robert I and Offen, Christian}, year={2020}, pages={1363–1400} }"},"volume":20,"user_id":"85279","_id":"19938","page":"1363-1400","status":"public"},{"oa":"1","citation":{"mla":"Kreusser, Lisa Maria, et al. “Detection of High Codimensional Bifurcations in Variational PDEs.” <i>Nonlinearity</i>, vol. 33, no. 5, 2020, pp. 2335–63, doi:<a href=\"https://doi.org/10.1088/1361-6544/ab7293\">10.1088/1361-6544/ab7293</a>.","bibtex":"@article{Kreusser_McLachlan_Offen_2020, title={Detection of high codimensional bifurcations in variational PDEs}, volume={33}, DOI={<a href=\"https://doi.org/10.1088/1361-6544/ab7293\">10.1088/1361-6544/ab7293</a>}, number={5}, journal={Nonlinearity}, author={Kreusser, Lisa Maria and McLachlan, Robert I and Offen, Christian}, year={2020}, pages={2335–2363} }","ama":"Kreusser LM, McLachlan RI, Offen C. Detection of high codimensional bifurcations in variational PDEs. <i>Nonlinearity</i>. 2020;33(5):2335-2363. doi:<a href=\"https://doi.org/10.1088/1361-6544/ab7293\">10.1088/1361-6544/ab7293</a>","ieee":"L. M. Kreusser, R. I. McLachlan, and C. Offen, “Detection of high codimensional bifurcations in variational PDEs,” <i>Nonlinearity</i>, vol. 33, no. 5, pp. 2335–2363, 2020.","apa":"Kreusser, L. M., McLachlan, R. I., &#38; Offen, C. (2020). Detection of high codimensional bifurcations in variational PDEs. <i>Nonlinearity</i>, <i>33</i>(5), 2335–2363. <a href=\"https://doi.org/10.1088/1361-6544/ab7293\">https://doi.org/10.1088/1361-6544/ab7293</a>","short":"L.M. Kreusser, R.I. McLachlan, C. Offen, Nonlinearity 33 (2020) 2335–2363.","chicago":"Kreusser, Lisa Maria, Robert I McLachlan, and Christian Offen. “Detection of High Codimensional Bifurcations in Variational PDEs.” <i>Nonlinearity</i> 33, no. 5 (2020): 2335–63. <a href=\"https://doi.org/10.1088/1361-6544/ab7293\">https://doi.org/10.1088/1361-6544/ab7293</a>."},"volume":33,"user_id":"85279","_id":"19939","page":"2335-2363","status":"public","department":[{"_id":"636"}],"type":"journal_article","date_created":"2020-10-06T16:32:04Z","extern":"1","publication":"Nonlinearity","issue":"5","doi":"10.1088/1361-6544/ab7293","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://doi.org/10.1088/1361-6544/ab7293","open_access":"1"}],"article_type":"original","intvolume":"        33","publication_status":"published","date_updated":"2022-01-06T06:54:14Z","author":[{"first_name":"Lisa Maria","last_name":"Kreusser","full_name":"Kreusser, Lisa Maria"},{"last_name":"McLachlan","first_name":"Robert I","full_name":"McLachlan, Robert I"},{"last_name":"Offen","first_name":"Christian","orcid":"https://orcid.org/0000-0002-5940-8057","full_name":"Offen, Christian","id":"85279"}],"publication_identifier":{"issn":["0951-7715","1361-6544"]},"title":"Detection of high codimensional bifurcations in variational PDEs","year":"2020"},{"oa":"1","place":"Palmerston North, New Zealand","file_date_updated":"2020-10-07T14:01:58Z","supervisor":[{"full_name":"McLachlan, Robert I","first_name":"Robert I","last_name":"McLachlan"}],"citation":{"short":"C. Offen, Analysis of Hamiltonian Boundary Value Problems and Symplectic Integration, Massey University, Palmerston North, New Zealand, 2020.","chicago":"Offen, Christian. <i>Analysis of Hamiltonian Boundary Value Problems and Symplectic Integration</i>. Palmerston North, New Zealand: Massey University, 2020.","ieee":"C. Offen, <i>Analysis of Hamiltonian boundary value problems and symplectic integration</i>. Palmerston North, New Zealand: Massey University, 2020.","apa":"Offen, C. (2020). <i>Analysis of Hamiltonian boundary value problems and symplectic integration</i>. Palmerston North, New Zealand: Massey University.","bibtex":"@book{Offen_2020, place={Palmerston North, New Zealand}, title={Analysis of Hamiltonian boundary value problems and symplectic integration}, publisher={Massey University}, author={Offen, Christian}, year={2020} }","ama":"Offen C. <i>Analysis of Hamiltonian Boundary Value Problems and Symplectic Integration</i>. Palmerston North, New Zealand: Massey University; 2020.","mla":"Offen, Christian. <i>Analysis of Hamiltonian Boundary Value Problems and Symplectic Integration</i>. Massey University, 2020."},"ddc":["510"],"user_id":"85279","_id":"19947","publisher":"Massey University","has_accepted_license":"1","status":"public","type":"dissertation","file":[{"title":"Thesis Christian Offen","content_type":"application/pdf","file_id":"19948","date_updated":"2020-10-07T14:01:58Z","relation":"main_file","file_size":19465740,"access_level":"open_access","file_name":"ths_all_signatures.pdf","description":"A thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in\nMathematics at Massey University, Manawatū, New Zealand.","date_created":"2020-10-06T18:54:53Z","creator":"coffen"}],"date_created":"2020-10-06T18:56:44Z","abstract":[{"text":"Ordinary differential equations (ODEs) and partial differential equations (PDEs) arise\r\nin most scientific disciplines that make use of mathematical techniques. As exact solutions are in general not computable, numerical methods are used to obtain approximate\r\nsolutions. In order to draw valid conclusions from numerical computations, it is crucial\r\nto understand which qualitative aspects numerical solutions have in common with the\r\nexact solution. Symplecticity is a subtle notion that is related to a rich family of geometric properties of Hamiltonian systems. While the effects of preserving symplecticity\r\nunder discretisation on long-term behaviour of motions is classically well known, in this\r\nthesis\r\n(a) the role of symplecticity for the bifurcation behaviour of solutions to Hamiltonian\r\nboundary value problems is explained. In parameter dependent systems at a bifurcation\r\npoint the solution set to a boundary value problem changes qualitatively. Bifurcation\r\nproblems are systematically translated into the framework of classical catastrophe theory. It is proved that existing classification results in catastrophe theory apply to\r\npersistent bifurcations of Hamiltonian boundary value problems. Further results for\r\nsymmetric settings are derived.\r\n(b) It is proved that to preserve generic bifurcations under discretisation it is necessary and sufficient to preserve the symplectic structure of the problem.\r\n(c) The catastrophe theory framework for Hamiltonian ODEs is extended to PDEs\r\nwith variational structure. Recognition equations for A-series singularities for functionals on Banach spaces are derived and used in a numerical example to locate high-codimensional bifurcations.\r\n(d) The potential of symplectic integration for infinite-dimensional Lie-Poisson systems (Burgers’ equation, KdV, fluid equations, . . . ) using Clebsch variables is analysed.\r\nIt is shown that the advantages of symplectic integration can outweigh the disadvantages of integrating over a larger phase space introduced by a Clebsch representation.\r\n(e) Finally, the preservation of variational structure of symmetric solutions in multisymplectic PDEs by multisymplectic integrators on the example of (phase-rotating)\r\ntravelling waves in the nonlinear wave equation is discussed.","lang":"eng"}],"extern":"1","alternative_title":["A thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Mathematics at Massey University, Manawatū, New Zealand."],"main_file_link":[{"open_access":"1","url":"https://hdl.handle.net/10179/16155"}],"language":[{"iso":"eng"}],"date_updated":"2022-01-06T06:54:16Z","publication_status":"published","year":"2020","title":"Analysis of Hamiltonian boundary value problems and symplectic integration","author":[{"orcid":"https://orcid.org/0000-0002-5940-8057","first_name":"Christian","last_name":"Offen","full_name":"Offen, Christian","id":"85279"}]},{"file":[{"file_name":"damke20.pdf","file_size":771137,"access_level":"open_access","relation":"main_file","date_updated":"2020-10-08T11:21:00Z","file_id":"19954","content_type":"application/pdf","creator":"cdamke","date_created":"2020-10-08T10:54:48Z"},{"date_updated":"2020-10-08T11:24:29Z","relation":"supplementary_material","access_level":"open_access","file_size":613163,"file_name":"damke20-supp.pdf","content_type":"application/pdf","file_id":"19955","creator":"cdamke","date_created":"2020-10-08T10:54:59Z"}],"date_created":"2020-10-08T10:48:38Z","type":"conference","keyword":["graph neural networks","Weisfeiler-Lehman test","cycle detection"],"department":[{"_id":"355"}],"publication":"Proceedings of the 12th Asian Conference on Machine Learning (ACML 2020)","abstract":[{"lang":"eng","text":"Current GNN architectures use a vertex neighborhood aggregation scheme, which limits their discriminative power to that of the 1-dimensional Weisfeiler-Lehman (WL) graph isomorphism test. Here, we propose a novel graph convolution operator that is based on the 2-dimensional WL test. We formally show that the resulting 2-WL-GNN architecture is more discriminative than existing GNN approaches. This theoretical result is complemented by experimental studies using synthetic and real data. On multiple common graph classification benchmarks, we demonstrate that the proposed model is competitive with state-of-the-art graph kernels and GNNs."}],"language":[{"iso":"eng"}],"series_title":"Proceedings of Machine Learning Research","year":"2020","title":"A Novel Higher-order Weisfeiler-Lehman Graph Convolution","author":[{"orcid":"0000-0002-0455-0048","last_name":"Damke","first_name":"Clemens","full_name":"Damke, Clemens","id":"48192"},{"id":"58747","full_name":"Melnikov, Vitaly","first_name":"Vitaly","last_name":"Melnikov"},{"id":"48129","first_name":"Eyke","last_name":"Hüllermeier","full_name":"Hüllermeier, Eyke"}],"publication_status":"published","date_updated":"2022-01-06T06:54:17Z","intvolume":"       129","external_id":{"arxiv":["2007.00346"]},"place":"Bangkok, Thailand","oa":"1","file_date_updated":"2020-10-08T11:24:29Z","citation":{"bibtex":"@inproceedings{Damke_Melnikov_Hüllermeier_2020, place={Bangkok, Thailand}, series={Proceedings of Machine Learning Research}, title={A Novel Higher-order Weisfeiler-Lehman Graph Convolution}, volume={129}, booktitle={Proceedings of the 12th Asian Conference on Machine Learning (ACML 2020)}, publisher={PMLR}, author={Damke, Clemens and Melnikov, Vitaly and Hüllermeier, Eyke}, editor={Jialin Pan, Sinno and Sugiyama, MasashiEditors}, year={2020}, pages={49–64}, collection={Proceedings of Machine Learning Research} }","ama":"Damke C, Melnikov V, Hüllermeier E. A Novel Higher-order Weisfeiler-Lehman Graph Convolution. In: Jialin Pan S, Sugiyama M, eds. <i>Proceedings of the 12th Asian Conference on Machine Learning (ACML 2020)</i>. Vol 129. Proceedings of Machine Learning Research. Bangkok, Thailand: PMLR; 2020:49-64.","mla":"Damke, Clemens, et al. “A Novel Higher-Order Weisfeiler-Lehman Graph Convolution.” <i>Proceedings of the 12th Asian Conference on Machine Learning (ACML 2020)</i>, edited by Sinno Jialin Pan and Masashi Sugiyama, vol. 129, PMLR, 2020, pp. 49–64.","chicago":"Damke, Clemens, Vitaly Melnikov, and Eyke Hüllermeier. “A Novel Higher-Order Weisfeiler-Lehman Graph Convolution.” In <i>Proceedings of the 12th Asian Conference on Machine Learning (ACML 2020)</i>, edited by Sinno Jialin Pan and Masashi Sugiyama, 129:49–64. Proceedings of Machine Learning Research. Bangkok, Thailand: PMLR, 2020.","short":"C. Damke, V. Melnikov, E. Hüllermeier, in: S. Jialin Pan, M. Sugiyama (Eds.), Proceedings of the 12th Asian Conference on Machine Learning (ACML 2020), PMLR, Bangkok, Thailand, 2020, pp. 49–64.","ieee":"C. Damke, V. Melnikov, and E. Hüllermeier, “A Novel Higher-order Weisfeiler-Lehman Graph Convolution,” in <i>Proceedings of the 12th Asian Conference on Machine Learning (ACML 2020)</i>, Bangkok, Thailand, 2020, vol. 129, pp. 49–64.","apa":"Damke, C., Melnikov, V., &#38; Hüllermeier, E. (2020). A Novel Higher-order Weisfeiler-Lehman Graph Convolution. In S. Jialin Pan &#38; M. Sugiyama (Eds.), <i>Proceedings of the 12th Asian Conference on Machine Learning (ACML 2020)</i> (Vol. 129, pp. 49–64). 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