TY - CONF
AU - Bühmann, Lorenz
AU - Usbeck, Ricardo
AU - Ngonga Ngomo, Axel-Cyrille
ED - Arenas, Marcelo
ED - Corcho, Óscar
ED - Simperl, Elena
ED - Strohmaier, Markus
ED - d'Aquin, Mathieu
ED - Srinivas, Kavitha
ED - Groth, Paul
ED - Dumontier, Michel
ED - Heflin, Jeff
ED - Thirunarayan, Krishnaprasad
ED - Staab, Steffen
ID - 26448
T2 - The Semantic Web - {ISWC} 2015 - 14th International Semantic Web Conference, Bethlehem, PA, USA, October 11-15, 2015, Proceedings, Part {II}
TI - ASSESS - Automatic Self-Assessment Using Linked Data
VL - 9367
ER -
TY - CONF
AU - Winkelnkemper, Felix
AU - Oberhoff, Andreas
ED - wedge, Reinhard
ED - Selke, Harald
ID - 26449
TI - WebArena - R {\ "a} spacious structures for {\" u} r the learning locations of the future
VL - 330
ER -
TY - CONF
AU - Marx, Edgard
AU - Soru, Tommaso
AU - Esteves, Diego
AU - Ngonga Ngomo, Axel-Cyrille
AU - Lehmann, Jens
ED - Villata, Serena
ED - Z. Pan, Jeff
ED - Dragoni, Mauro
ID - 26450
T2 - Proceedings of the {ISWC} 2015 Posters {\&} Demonstrations Track co-located with the 14th International Semantic Web Conference (ISWC-2015), Bethlehem, PA, USA, October 11, 2015
TI - An Open Question Answering Framework
VL - 1486
ER -
TY - CONF
AU - Saleem, Muhammad
AU - Intizar Ali, Muhammad
AU - Hogan, Aidan
AU - Mehmood, Qaiser
AU - Ngonga Ngomo, Axel-Cyrille
ED - Arenas, Marcelo
ED - Corcho, Óscar
ED - Simperl, Elena
ED - Strohmaier, Markus
ED - d'Aquin, Mathieu
ED - Srinivas, Kavitha
ED - Groth, Paul
ED - Dumontier, Michel
ED - Heflin, Jeff
ED - Thirunarayan, Krishnaprasad
ED - Staab, Steffen
ID - 26451
T2 - The Semantic Web - {ISWC} 2015 - 14th International Semantic Web Conference, Bethlehem, PA, USA, October 11-15, 2015, Proceedings, Part {II}
TI - LSQ: The Linked SPARQL Queries Dataset
VL - 9367
ER -
TY - CONF
AU - Saleem, Muhammad
AU - Intizar Ali, Muhammad
AU - Hogan, Aidan
AU - Mehmood, Qaiser
AU - Ngonga Ngomo, Axel-Cyrille
ED - Villata, Serena
ED - Z. Pan, Jeff
ED - Dragoni, Mauro
ID - 26452
T2 - Proceedings of the {ISWC} 2015 Posters {\&} Demonstrations Track co-located with the 14th International Semantic Web Conference (ISWC-2015), Bethlehem, PA, USA, October 11, 2015
TI - The LSQ Dataset: Querying for Queries
VL - 1486
ER -
TY - CONF
AU - Saleem, Muhammad
AU - Mehmood, Qaiser
AU - Ngonga Ngomo, Axel-Cyrille
ED - Villata, Serena
ED - Z. Pan, Jeff
ED - Dragoni, Mauro
ID - 26453
T2 - Proceedings of the {ISWC} 2015 Posters {\&} Demonstrations Track co-located with the 14th International Semantic Web Conference (ISWC-2015), Bethlehem, PA, USA, October 11, 2015
TI - Automatic SPARQL Benchmark Generation using FEASIBLE
VL - 1486
ER -
TY - CONF
AU - Saveta, Tzanina
AU - Daskalaki, Evangelia
AU - Flouris, Giorgos
AU - Fundulaki, Irini
AU - Herschel, Melanie
AU - Ngonga Ngomo, Axel-Cyrille
ED - Arenas, Marcelo
ED - Corcho, Óscar
ED - Simperl, Elena
ED - Strohmaier, Markus
ED - d'Aquin, Mathieu
ED - Srinivas, Kavitha
ED - Groth, Paul
ED - Dumontier, Michel
ED - Heflin, Jeff
ED - Thirunarayan, Krishnaprasad
ED - Staab, Steffen
ID - 26454
T2 - The Semantic Web - {ISWC} 2015 - 14th International Semantic Web Conference, Bethlehem, PA, USA, October 11-15, 2015, Proceedings, Part {I}
TI - LANCE: Piercing to the Heart of Instance Matching Tools
VL - 9366
ER -
TY - CONF
AU - Saveta, Tzanina
AU - Daskalaki, Evangelia
AU - Flouris, Giorgos
AU - Fundulaki, Irini
AU - Ngonga Ngomo, Axel-Cyrille
ED - Villata, Serena
ED - Z. Pan, Jeff
ED - Dragoni, Mauro
ID - 26456
T2 - Proceedings of the {ISWC} 2015 Posters {\&} Demonstrations Track co-located with the 14th International Semantic Web Conference (ISWC-2015), Bethlehem, PA, USA, October 11, 2015
TI - LANCE: A Generic Benchmark Generator for Linked Data
VL - 1486
ER -
TY - CONF
AU - Soru, Tommaso
AU - Marx, Edgard
AU - Ngonga Ngomo, Axel-Cyrille
ED - Villata, Serena
ED - Z. Pan, Jeff
ED - Dragoni, Mauro
ID - 26457
T2 - Proceedings of the {ISWC} 2015 Posters {\&} Demonstrations Track co-located with the 14th International Semantic Web Conference (ISWC-2015), Bethlehem, PA, USA, October 11, 2015
TI - Enhancing Dataset Quality using Keys
VL - 1486
ER -
TY - CONF
AU - M. Hassan, Mofeed
AU - Lehmann, Jens
AU - Ngonga Ngomo, Axel-Cyrille
ED - Bizer, Christian
ED - Auer, Sören
ED - Berners-Lee, Tim
ED - Heath, Tom
ID - 26458
T2 - Proceedings of the Workshop on Linked Data on the Web, {LDOW} 2015, co-located with the 24th International World Wide Web Conference {(WWW} 2015), Florence, Italy, May 19th, 2015
TI - Interlinking: Performance Assessment of User Evaluation vs. Supervised Learning Approaches
VL - 1409
ER -
TY - CONF
AU - Saveta, Tzanina
AU - Daskalaki, Evangelia
AU - Flouris, Giorgos
AU - Fundulaki, Irini
AU - Herschel, Melanie
AU - Ngonga Ngomo, Axel-Cyrille
ED - Gangemi, Aldo
ED - Leonardi, Stefano
ED - Panconesi, Alessandro
ID - 26459
T2 - Proceedings of the 24th International Conference on World Wide Web Companion, {WWW} 2015, Florence, Italy, May 18-22, 2015 - Companion Volume
TI - Pushing the Limits of Instance Matching Systems: A Semantics-Aware Benchmark for Linked Data
ER -
TY - CONF
AU - Martin, Michael
AU - Abicht, Konrad
AU - Stadler, Claus
AU - Ngonga Ngomo, Axel-Cyrille
AU - Soru, Tommaso
AU - Auer, Sören
ED - Gangemi, Aldo
ED - Leonardi, Stefano
ED - Panconesi, Alessandro
ID - 26460
T2 - Proceedings of the 24th International Conference on World Wide Web Companion, {WWW} 2015, Florence, Italy, May 18-22, 2015 - Companion Volume
TI - CubeViz: Exploration and Visualization of Statistical Linked Data
ER -
TY - CONF
AU - Soru, Tommaso
AU - Marx, Edgard
AU - Ngonga Ngomo, Axel-Cyrille
ED - Gangemi, Aldo
ED - Leonardi, Stefano
ED - Panconesi, Alessandro
ID - 26461
T2 - Proceedings of the 24th International Conference on World Wide Web, {WWW} 2015, Florence, Italy, May 18-22, 2015
TI - ROCKER: A Refinement Operator for Key Discovery
ER -
TY - CONF
AU - Usbeck, Ricardo
AU - Röder, Michael
AU - Ngonga Ngomo, Axel-Cyrille
AU - Baron, Ciro
AU - Both, Andreas
AU - Brümmer, Martin
AU - Ceccarelli, Diego
AU - Cornolti, Marco
AU - Cherix, Didier
AU - Eickmann, Bernd
AU - Ferragina, Paolo
AU - Lemke, Christiane
AU - Moro, Andrea
AU - Navigli, Roberto
AU - Piccinno, Francesco
AU - Rizzo, Giuseppe
AU - Sack, Harald
AU - Speck, René
AU - Troncy, Raphaël
AU - Waitelonis, Jörg
AU - Wesemann, Lars
ED - Gangemi, Aldo
ED - Leonardi, Stefano
ED - Panconesi, Alessandro
ID - 26462
T2 - Proceedings of the 24th International Conference on World Wide Web, {WWW} 2015, Florence, Italy, May 18-22, 2015
TI - GERBIL: General Entity Annotator Benchmarking Framework
ER -
TY - CHAP
AU - Lehmann, Jens
AU - Athanasiou, Spiros
AU - Both, Andreas
AU - García-Rojas, Alejandra
AU - Giannopoulos, Giorgos
AU - Hladky, Daniel
AU - Jay Le Grange, Jon
AU - Ngonga Ngomo, Axel-Cyrille
AU - Ahmed Sherif, Mohamed
AU - Stadler, Claus
AU - Wauer, Matthias
AU - Westphal, Patrick
AU - Zaslawski, Vadim
ED - Narock, Tom
ED - Fox, Peter
ID - 26463
T2 - The Semantic Web in Earth and Space Science. Current Status and Future Directions
TI - Managing Geospatial Linked Data in the GeoKnow Project
VL - 20
ER -
TY - JOUR
AU - Böhm, Julian
AU - Bellec, Matthieu
AU - Mortessagne, Fabrice
AU - Kuhl, Ulrich
AU - Barkhofen, Sonja
AU - Gehler, Stefan
AU - Stöckmann, Hans-Jürgen
AU - Foulger, Iain
AU - Gnutzmann, Sven
AU - Tanner, Gregor
ID - 26493
JF - Physical Review Letters
SN - 0031-9007
TI - Microwave Experiments Simulating Quantum Search and Directed Transport in Artificial Graphene
ER -
TY - JOUR
AU - Schäfer, Rudi
AU - Barkhofen, Sonja
AU - Guhr, Thomas
AU - Stöckmann, Hans-Jürgen
AU - Kuhl, Ulrich
ID - 26495
JF - Physical Review E
SN - 1539-3755
TI - Compounding approach for univariate time series with nonstationary variances
ER -
TY - THES
AU - Hallmann, Corinna
ID - 265
TI - Optimierung von Wasserbehältern in einem Wasserversorgungssystem mittels einer Kombination aus Netzreduktion, mathematischer Optimierung und hydraulischer Simulation
ER -
TY - JOUR
AU - Elster, Fabian
AU - Barkhofen, Sonja
AU - Nitsche, Thomas
AU - Novotný, Jaroslav
AU - Gábris, Aurél
AU - Jex, Igor
AU - Silberhorn, Christine
ID - 26520
JF - Scientific Reports
SN - 2045-2322
TI - Quantum walk coherences on a dynamical percolation graph
ER -
TY - BOOK
ED - Keil, Reinhard
ED - Selke, Harald
ID - 26531
TI - 20 years of learning with the World Wide Web - technology and education in dialogue
VL - 330
ER -
TY - CONF
AU - Keil, Reinhard
AU - Selke, Harald
ED - Keil, Reinhard
ED - Selke, Harald
ID - 26532
TI - Learn with, through and {\ "about the WWW
VL - 330
ER -
TY - CONF
AU - Keil, Reinhard
AU - Selke, Harald
ED - Keil, Reinhard
ED - Selke, Harald
ID - 26533
TI - Virtual knowledge {\ "a} ume - From the presentation of content to virtual learning {\" a} tten
VL - 330
ER -
TY - THES
AU - Klompmaker, Florian
ID - 26534
TI - Development of a structured process of interaction design for {\ "u} r nat {\" u} local user interfaces
ER -
TY - CONF
AB - Patterns serve to codify design knowledge. By embedding them in a hypothesis-driven design, it is possible to develop them further into sample languages. For this it is necessary to resolve the underlying conflicts in the form of design hypotheses and to validate them empirically in order to enable further use and generalization. In this article, an experiment is presented that describes this procedure and demonstrates the interplay between theory formation and codification of design knowledge using two examples.
AU - Schild, Christian
AU - Petrausch, Vanessa
ID - 26536
T2 - Human and Computer 2015 - Proceedings
TI - Empirical validation of design patterns
ER -
TY - CONF
AB - Many markets have seen a shift from the idea of buying and moved to leasing instead. Arguably, the latter has been the major catalyst for their success. Ten years ago, research realized this shift and initiated the study of "online leasing problems" by introducing leasing to online optimization problems. Resources required to provide a service in an "online leasing problem" are no more bought but leased for different durations. In this paper, we provide an overview of results that contribute to the understanding of "online resource leasing problems".
AU - Markarian, Christine
AU - Meyer auf der Heide, Friedhelm
ID - 266
T2 - Proceedings of the 2015 ACM Symposium on Principles of Distributed Computing (PODC)
TI - Online Resource Leasing
ER -
TY - CHAP
AU - Hellmich, Frank
AU - Görel, Gamze
ED - Redlich, Hubertus
ED - Schäfer, Lea
ED - Wachtel, Grit
ED - Zehbe, Katja
ED - Moser, Vera
ID - 26653
T2 - Veränderung und Beständigkeit in Zeiten der Inklusion. Perspektiven sonderpädagogischer Professionalisierung
TI - Einstellungen von Grundschullehrkräften zum inklusiven Lernen in Abhängigkeit von dem Umfang an Erfahrungen aus dem Unterricht mit Kindern mit unterschiedlichen sonderpädagogischen Förderbedarfen
ER -
TY - THES
AU - Markarian, Christine
ID - 267
TI - Online Resource Leasing
ER -
TY - CHAP
AU - Blumberg, Eva
AU - Hellmich, Frank
AU - Fromme, Theresa
ED - Liebers, Katrin
ED - Landwehr, Brunhild
ED - Marquardt, Anne
ED - Schlotter, Kezia
ID - 26735
T2 - Lernprozessbegleitung und adaptives Lernen in der Grundschule. Forschungsbezogene Beiträge
TI - Entwicklung naturwissenschaftlich-technischer Lehr-Lernangebote für inklusiven Sachunterricht
ER -
TY - CHAP
AU - Ort, Margarita
AU - Hellmich, Frank
ED - Liebers, Katrin
ED - Landwehr, Brunhild
ED - Reinhold, Simone
ED - Riegler, Susanne
ED - Schmidt, Romina
ID - 26736
T2 - Facetten grundschulpädagogischer und -didaktischer Forschung
TI - Kausalattributionen von Leseerfolgen und Lesemisserfolgen bei Kindern im Leseunterricht der Grundschule
ER -
TY - CHAP
AU - Hellmich, Frank
ED - Kaiser, Astrid
ID - 26739
T2 - Innovative Erhebungsmethoden – dargestellt an verschiedenen Forschungsprojekten
TI - Lesestrategien und Leseerfolg bei Kindern im vierten Grundschuljahr – Analysen mit Fragebogen- und Beobachtungsverfahren
ER -
TY - GEN
AU - Lange, Alexander
ID - 268
TI - Online Bewertungssysteme – Ein systematischer Überblick
ER -
TY - JOUR
AU - Klünder, Nina
ID - 26881
IS - 1
JF - Hauswirtschaft und Wissenschaft
TI - Gesellschaftliche und kulturelle Bedeutung von Mittagsverpflegung in Gießener Kindertagesstätten
VL - 63
ER -
TY - JOUR
AU - Meier-Gräwe, Uta
AU - Klünder, Nina
ID - 26884
IS - 6
JF - KiTa aktuell
TI - Verpflegung in Kindertagesstätten gestalten – Ergebnisse einer qualitativen Studie
VL - 23
ER -
TY - CONF
AB - Proof-carrying hardware is an approach that has recently been proposed for the efficient verification of reconfigurable modules. We present an application of proof-carrying hardware to guarantee the correct functionality of dynamically reconfigured image processing modules. Our prototype comprises a reconfigurable-system-on-chip with an embedded virtual FPGA fabric. This setup allows us to leverage open source FPGA synthesis and backend tools to produce FPGA configuration bitstreams with an open format and, thus, to demonstrate and experimentally evaluate proof-carrying hardware at the bitstream level.
AU - Wiersema, Tobias
AU - Wu, Sen
AU - Platzner, Marco
ID - 269
T2 - Proceedings of the International Symposium in Reconfigurable Computing (ARC)
TI - On-The-Fly Verification of Reconfigurable Image Processing Modules based on a Proof-Carrying Hardware Approach
ER -
TY - JOUR
AU - Wright, C J
AU - Atkinson, F S
AU - Ramalingam, N
AU - Buyken, Anette
AU - Brand-Miller, J C
ID - 26918
JF - European Journal of Clinical Nutrition
SN - 0954-3007
TI - Effects of human milk and formula on postprandial glycaemia and insulinaemia
ER -
TY - JOUR
AU - Goletzke, Janina
AU - Buyken, Anette
AU - Louie, Jimmy CY
AU - Moses, Robert G
AU - Brand-Miller, Jennie C
ID - 26919
JF - The American Journal of Clinical Nutrition
SN - 0002-9165
TI - Dietary micronutrient intake during pregnancy is a function of carbohydrate quality
ER -
TY - JOUR
AU - Günther, Anke L. B.
AU - Schulze, Matthias B.
AU - Kroke, Anja
AU - Diethelm, Katharina
AU - Joslowski, Gesa
AU - Krupp, Danika
AU - Wudy, Stefan
AU - Buyken, Anette
ID - 26920
JF - Nutrition and Cancer
SN - 0163-5581
TI - Early Diet and Later Cancer Risk: Prospective Associations of Dietary Patterns During Critical Periods of Childhood with the GH-IGF Axis, Insulin Resistance and Body Fatness in Younger Adulthood
ER -
TY - JOUR
AB - AbstractThe growth hormone (GH) insulin-like growth factor (IGF) axis has been linked to insulin metabolism and cancer risk. Experimental evidence indicates that the GH–IGF axis itself can be influenced by dietary flavonoids. As fruit and vegetable (FV) intake is a major source of flavonoid consumption, FV’s beneficial health effects may be explained via flavonoids’ influence on the GH–IGF axis, but observational evidence is currently rare. We used data from Dortmund Nutritional and Anthropometric Longitudinally Designed Study participants to analyse prospective associations between FV, fruit intake and flavonoid intake from FV (FlavFV) with IGF-1 and its binding proteins IGFBP-2 and IGFBP-3. Subjects needed to provide a fasting blood sample in adulthood (18–39 years) and at least two 3-d weighed dietary records in early life (0·5−2 years,n191), mid-childhood (3−7 years,n265) or adolescence (girls: 9−15 years, boys: 10−16 years,n261). Additional analyses were conducted among those providing at least three 24-h urine samples in adolescence (n236) to address the predictor urinary hippuric acid (HA), a biomarker of polyphenol intake. Higher fruit intake in mid-childhood and adolescence was related to higher IGFBP-2 in adulthood (P=0·03 andP=0·045). Comparable trends (P=0·045−0·09) were discernable for FV intake (but not FlavFV) in all three time windows. Similarly, higher adolescent HA excretion tended to be related (P=0·06) to higher adult IGFBP-2 levels. Regarding IGFBP-3, a marginal (P=0·08) positive association was observed with FlavFV in mid-childhood only. None of the investigated dietary factors was related to IGF-1. In conclusion, higher fruit and FV intakes during growth may be relevant for adult IGFBP-2, but probably not for IGFBP-3 or IGF-1.
AU - Krupp, Danika
AU - Remer, Thomas
AU - Penczynski, Katharina J.
AU - Bolzenius, Katja
AU - Wudy, Stefan A.
AU - Buyken, Anette
ID - 26921
JF - British Journal of Nutrition
SN - 0007-1145
TI - Relevance of fruits, vegetables and flavonoids from fruits and vegetables during early life, mid-childhood and adolescence for levels of insulin-like growth factor (IGF-1) and its binding proteins IGFBP-2 and IGFBP-3 in young adulthood
ER -
TY - JOUR
AU - Penczynski, Katharina J.
AU - Krupp, Danika
AU - Bring, Anna
AU - Bolzenius, Katja
AU - Remer, Thomas
AU - Buyken, Anette
ID - 26922
JF - European Journal of Nutrition
SN - 1436-6207
TI - Relative validation of 24-h urinary hippuric acid excretion as a biomarker for dietary flavonoid intake from fruit and vegetables in healthy adolescents
ER -
TY - JOUR
AB - We consider structural and algorithmic questions related to the Nash dynamics of weighted congestion games. In weighted congestion games with linear latency functions, the existence of pure Nash equilibria is guaranteed by a potential function argument. Unfortunately, this proof of existence is inefficient and computing pure Nash equilibria in such games is a PLS-hard problem even when all players have unit weights. The situation gets worse when superlinear (e.g., quadratic) latency functions come into play; in this case, the Nash dynamics of the game may contain cycles and pure Nash equilibria may not even exist. Given these obstacles, we consider approximate pure Nash equilibria as alternative solution concepts. A ρ--approximate pure Nash equilibrium is a state of a (weighted congestion) game from which no player has any incentive to deviate in order to improve her cost by a multiplicative factor higher than ρ. Do such equilibria exist for small values of ρ? And if so, can we compute them efficiently?We provide positive answers to both questions for weighted congestion games with polynomial latency functions by exploiting an “approximation” of such games by a new class of potential games that we call Ψ-games. This allows us to show that these games have d!-approximate pure Nash equilibria, where d is the maximum degree of the latency functions. Our main technical contribution is an efficient algorithm for computing O(1)-approximate pure Nash equilibria when d is a constant. For games with linear latency functions, the approximation guarantee is 3+√5/2 + Oγ for arbitrarily small γ > 0; for latency functions with maximum degree d≥ 2, it is d2d+o(d). The running time is polynomial in the number of bits in the representation of the game and 1/γ. As a byproduct of our techniques, we also show the following interesting structural statement for weighted congestion games with polynomial latency functions of maximum degree d ≥ 2: polynomially-long sequences of best-response moves from any initial state to a dO(d2)-approximate pure Nash equilibrium exist and can be efficiently identified in such games as long as d is a constant.To the best of our knowledge, these are the first positive algorithmic results for approximate pure Nash equilibria in weighted congestion games. Our techniques significantly extend our recent work on unweighted congestion games through the use of Ψ-games. The concept of approximating nonpotential games by potential ones is interesting in itself and might have further applications.
AU - Caragiannis, Ioannis
AU - Fanelli, Angelo
AU - Gravin, Nick
AU - Skopalik, Alexander
ID - 320
IS - 1
JF - Transactions on Economics and Computation
TI - Approximate Pure Nash Equilibria in Weighted Congestion Games: Existence, Efficient Computation, and Structure
VL - 3
ER -
TY - GEN
AU - Eidens, Fabian
ID - 321
TI - Anonymous credential system based on q-Strong Diffie-Hellman Assumption
ER -
TY - CONF
AB - Reputation systems are used to compute and publish reputation scores for services or products. We consider reputation systems where users are allowed to rate products that they purchased previously. To obtain trustworthy reputations, they are allowed to rate these products only once. As long as users rate products once, they stay anonymous. Everybody is able to detect users deviating from the rate-products-only-once policy and the anonymity of such dishonest users can be revoked by a system manager. In this paper we present formal models for such reputation systems and their security. Based on group signatures presented by Boneh, Boyen, and Shacham we design an efficient reputation system that meets all our requirements.
AU - Blömer, Johannes
AU - Juhnke, Jakob
AU - Kolb, Christina
ID - 322
T2 - Proceedings of the 18th International Conference on Financial Cryptography and Data Security (FC)
TI - Anonymous and Publicly Linkable Reputation Systems
ER -
TY - JOUR
AB - On-the-fly composition of service-based software solutions is still a challenging task. Even more challenges emerge when facing automatic service composition in markets of composed services for end users. In this paper, we focus on the functional discrepancy between “what a user wants” specified in terms of a request and “what a user gets” when executing a composed service. To meet the challenge of functional discrepancy, we propose the combination of existing symbolic composition approaches with machine learning techniques. We developed a learning recommendation system that expands the capabilities of existing composition algorithms to facilitate adaptivity and consequently reduces functional discrepancy. As a representative of symbolic techniques, an Artificial Intelligence planning based approach produces solutions that are correct with respect to formal specifications. Our learning recommendation system supports the symbolic approach in decision-making. Reinforcement Learning techniques enable the recommendation system to adjust its recommendation strategy over time based on user ratings. We implemented the proposed functionality in terms of a prototypical composition framework. Preliminary results from experiments conducted in the image processing domain illustrate the benefit of combining both complementary techniques.
AU - Jungmann, Alexander
AU - Mohr, Felix
ID - 323
IS - 1
JF - Journal of Internet Services and Applications
TI - An approach towards adaptive service composition in markets of composed services
ER -
TY - CONF
AB - Services are self-contained software components that can beused platform independent and that aim at maximizing software reuse. Abasic concern in service oriented architectures is to measure the reusabilityof services. One of the most important qualities is the functionalreusability, which indicates how relevant the task is that a service solves.Current metrics for functional reusability of software, however, have verylittle explanatory power and do not accomplish this goal.This paper presents a new approach to estimate the functional reusabilityof services based on their relevance. To this end, it denes the degreeto which a service enables the execution of other services as its contri-bution. Based on the contribution, relevance of services is dened as anestimation for their functional reusability. Explanatory power is obtainedby normalizing relevance values with a reference service. The applicationof the metric to a service test set conrms its supposed capabilities.
AU - Mohr, Felix
ID - 324
T2 - Proceedings of the 14th International Conference on Software Reuse (ICSR)
TI - A Metric for Functional Reusability of Services
ER -
TY - GEN
AU - Löken, Nils
ID - 325
TI - A Group Signature Scheme with Distributed Group Management - An Application of Threshold Encryption
ER -
TY - GEN
AU - Heihoff, Frederic
ID - 326
TI - A group signature scheme based on the LSRW assumption
ER -
TY - JOUR
AB - We consider the problem of resource discovery in distributed systems. In particular we give an algorithm, such that each node in a network discovers the address of any other node in the network. We model the knowledge of the nodes as a virtual overlay network given by a directed graph such that complete knowledge of all nodes corresponds to a complete graph in the overlay network. Although there are several solutions for resource discovery, our solution is the first that achieves worst-case optimal work for each node, i.e. the number of addresses (O(n)O(n)) or bits (O(nlogn)O(nlogn)) a node receives or sends coincides with the lower bound, while ensuring only a linear runtime (O(n)O(n)) on the number of rounds.
AU - Kniesburges, Sebastian
AU - Koutsopoulos, Andreas
AU - Scheideler, Christian
ID - 327
JF - Theoretical Computer Science
TI - A deterministic worst-case message complexity optimal solution for resource discovery
ER -
TY - CONF
AU - Beverungen, Daniel
AU - Klör, Benjamin
AU - Bräuer, Sebastian
AU - Monhof, Markus
ID - 3284
T2 - Proceedings of the Twenty-Third European Conference on Information Systems (ECIS 2015)
TI - Will They Die Another Day? A Decision Support Perspective on Reusing Electric Vehicle Batteries
ER -
TY - CONF
AU - Klör, Benjamin
AU - Beverungen, Daniel
AU - Bräuer, Sebastian
AU - Plenter, Florian
AU - Monhof, Markus
ID - 3285
T2 - Proceedings of the Twenty-Third European Conference on Information Systems (ECIS 2015)
TI - A Market for Trading Used Electric Vehicle Batteries — Theoretical Foundations and Information Systems
ER -
TY - JOUR
AU - Gries, Thomas
AU - Palnau, Irene
ID - 3295
IS - 4
JF - Peace Economics, Peace Science and Public Policy
TI - Sustaining Civil Peace: a configurational comparative analysis
VL - 21
ER -
TY - JOUR
AU - Gries, Thomas
AU - Meierrieks, Daniel
AU - Redlin, Margarete
ID - 3296
IS - 1
JF - Oxford Economic Papers
TI - Oppressive Governments, Dependence on the United States and Anti-American Terrorism
VL - 67
ER -
TY - GEN
AU - Fanasch, Patrizia
ID - 3309
TI - Erfolg durch Persönlichkeit? Der Einfluss der Markenpersönlichkeit auf den Zusammenhang von Reputation und Unternehmenserfolg
ER -
TY - GEN
AU - Walczok, Gregor Paul
ID - 3310
TI - Die Veränderung des Mobilfunkmarktes durch die Discountanbieter
ER -
TY - JOUR
AB - In this paper we consider an extended variant of query learning where the hidden concept is embedded in some Boolean circuit. This additional processing layer modifies query arguments and answers by fixed transformation functions which are known to the learner. For this scenario, we provide a characterization of the solution space and an ordering on it. We give a compact representation of the minimal and maximal solutions as quantified Boolean formulas and we adapt the original algorithms for exact learning of specific classes of propositional formulas.
AU - Bubeck, Uwe
AU - Kleine Büning, Hans
ID - 3343
JF - Artificial Intelligence
KW - Query learning
KW - Propositional logic
SN - 0004-3702
TI - Learning Boolean Specifications
ER -
TY - GEN
AU - Knorr, Christoph
ID - 3364
TI - Evaluation von Bildverarbeitungsalgorithmen in heterogenen Rechenknoten
ER -
TY - CONF
AU - Klör, Benjamin
AU - Bräuer, Sebastian
AU - Beverungen, Daniel
AU - Monhof, Markus
ID - 3437
T2 - Proceedings of the 12. International Conference on Wirtschaftsinformatik 2015 (WI 2015)
TI - A Domain-Specific Modeling Language for Electric Vehicle Batteries
ER -
TY - CONF
AU - Monhof, Markus
AU - Beverungen, Daniel
AU - Klör, Benjamin
AU - Bräuer, Sebastian
ED - Donnellan, Brian
ED - Helfert, Markus
ED - Kenneally, Jim
ED - VanderMeer, Debra
ED - Rothenberger, Marcus
ED - Winter, Robert
ID - 3438
T2 - New Horizons in Design Science: Broadening the Research Agenda
TI - Extending Battery Management Systems for Making Informed Decisions on Battery Reuse
ER -
TY - JOUR
AU - Euler, Dieter
AU - Sloane, Peter F. E.
ID - 3556
IS - 1
JF - Zeitschrift für Berufs-und Wirtschaftspädagogik
TI - Neue Bildungslandschaften - Kommunales Bildungsmanagement als Zukunftsaufgabe
VL - 111
ER -
TY - CHAP
AU - Fischer, Christoph
AU - Harteis, Christian
ED - Niedermair, Gerhard
ID - 3592
KW - Epistemische Überzeugungen
KW - learning culture
SN - 978-3-99033-403-4
T2 - Informelles Lernen, Annäherungen - Problemlagen - Forschungsbefunde
TI - Die Bedeutung subjektiver Sichtweisen für die Implementierung betrieblicher Lernkultur
ER -
TY - JOUR
AU - Harteis, Christian
AU - Billett, Stephen
AU - Goller, Michael
AU - Rausch, Andreas
AU - Seifried, J{\
ID - 3672
IS - 1
JF - International journal of training research
TI - Effects of age, gender and occupation on perceived workplace learning support
VL - 13
ER -
TY - CHAP
AU - Harteis, Christian
ED - Rausch, Andreas
ED - Warwas, Julia
ED - Seifried, Jürgen
ED - Wuttke, Eveline
ID - 3692
T2 - Konzepte und Ergebnisse ausgewählter Forschungsfelder der beruflichen Bildung
TI - Bedingungsfaktoren beruflichen Könnens
ER -
TY - CONF
AU - Kiesel, Johannes
AU - Al-Khatib, Khalid
AU - Hagen, Matthias
AU - Stein, Benno
ID - 3782
T2 - Proceedings of the 2nd Workshop on Argumentation Mining
TI - A Shared Task on Argumentation Mining in Newspaper Editorials
ER -
TY - CONF
AU - Kiesel, Johannes
AU - Al-Khatib, Khalid
AU - Hagen, Matthias
AU - Stein, Benno
ID - 3808
T2 - Proceedings of the 2nd Workshop on Argumentation Mining
TI - A Shared Task on Argumentation Mining in Newspaper Editorials
ER -
TY - CONF
AU - Wachsmuth, Henning
AU - Kiesel, Johannes
AU - Stein, Benno
ED - Tsujii, Junichi
ED - Hajic, Jan
ID - 3815
SN - 978-3-319-25740-2
T2 - Proceedings of the 2015 Conference on Empirical Methods in Natural Language Processing
TI - Sentiment Flow - A General Model of Web Review Argumentation
ER -
TY - JOUR
AB - The device principle of a prism-based on-chip spectrometer for TE polarization is introduced. The spectrometer exploits the modal dispersion in planar waveguides in a layout with slab regions having two different thicknesses of the guiding layer. The set-up uses parabolic mirrors, for the collimation of light of the input waveguide and focusing of the light to the receiver waveguides, which relies on total internal reflection at the interface between two such regions. These regions are connected adiabatically to prevent unwanted mode conversion and loss at the edges of the prism. The structure can be fabricated with two wet etching steps. The paper presents basic theory and a general approach for device optimization. The latter is illustrated with a numerical example assuming SiON technology.
AU - Civitci, F.
AU - Hammer, Manfred
AU - Hoekstra, H.J.W.M.
ID - 3845
JF - Optics Communications
KW - tet_topic_waveguide
SN - 0030-4018
TI - Planar prism spectrometer based on adiabatically connected waveguiding slabs
VL - 365
ER -
TY - JOUR
AB - Sheets of slab waveguides with sharp corners are investigated. By means of rigorous
numerical experiments, we look at oblique incidence of semi-guided plane waves. Radiation losses
vanish beyond a certain critical angle of incidence. One can thus realize lossless propagation through
90-degree corner configurations, where the remaining guided waves are still subject to pronounced
reflection and polarization conversion. A system of two corners can be viewed as a structure akin to
a Fabry-Perot-interferometer. By adjusting the distance between the two partial reflectors, here the
90-degree corners, one identifies step-like configurations that transmit the semi-guided plane waves
without radiation losses, and virtually without reflections. Simulations of semi-guided beams with
in-plane wide Gaussian profiles show that the effect survives in a true 3-D framework.
AU - Hammer, Manfred
AU - Hildebrandt, Andre
AU - Förstner, Jens
ID - 3847
IS - 3
JF - Journal of Lightwave Technology
KW - tet_topic_waveguide
SN - 0733-8724
TI - Full Resonant Transmission of Semiguided Planar Waves Through Slab Waveguide Steps at Oblique Incidence
VL - 34
ER -
TY - BOOK
AU - Wachsmuth, Henning
ID - 3879
SN - 978-3-319-25740-2
TI - Text Analysis Pipelines - Towards Ad-hoc Large-scale Text Mining
ER -
TY - JOUR
AB - Plasmon modes of the exact same individual gold nanoprisms are investigated through combined nanometer-resolved electron energy-loss spectroscopy (EELS) and cathodoluminescence (CL) measurements. We show that CL only probes the radiative modes, in contrast to EELS, which additionally reveals dark modes. The combination of both techniques on the same particles thus provides complementary information and also demonstrates that although the radiative modes give rise to very similar spatial distributions when probed by EELS or CL, their resonant energies appear to be different. We trace this phenomenon back to plasmon dissipation, which affects in different ways the plasmon signatures probed by these techniques. Our experiments are in agreement with electromagnetic numerical simulations and can be further interpreted within the framework of a quasistatic analytical model. We therefore demonstrate that CL and EELS are closely related to optical scattering and extinction, respectively, with the addition of nanometer spatial resolution.
AU - Losquin, Arthur
AU - Zagonel, Luiz F.
AU - Myroshnychenko, Viktor
AU - Rodríguez-González, Benito
AU - Tencé, Marcel
AU - Scarabelli, Leonardo
AU - Förstner, Jens
AU - Liz-Marzán, Luis M.
AU - García de Abajo, F. Javier
AU - Stéphan, Odile
AU - Kociak, Mathieu
ID - 3892
IS - 2
JF - Nano Letters
KW - tet_topic_plasmonics
SN - 1530-6984
TI - Unveiling Nanometer Scale Extinction and Scattering Phenomena through Combined Electron Energy Loss Spectroscopy and Cathodoluminescence Measurements
VL - 15
ER -
TY - JOUR
AB - We show how to optically connect guiding layers at different elevations in a 3-D integrated photonic circuit. Transfer of
optical power carried by planar, semi-guided waves is possible without reflections or radiation losses, and over large
vertical distances. This functionality is realized through simple step-like folds of high-contrast dielectric slab waveguides, in combination with oblique wave incidence, and fulfilling a resonance condition. Radiation losses vanish, and polarization conversion is suppressed for TE wave incidence beyond certain critical angles. This can be understood by fundamental arguments resting on a version of Snell’s law. The two 90° corners of a step act as identical partial reflectors in a Fabry–Perot-like resonator setup. By selecting the step height, i.e., the distance between the reflectors, one realizes resonant states with full transmission. Rigorous quasi-analytical simulations
for typical silicon/silica parameters demonstrate the functioning. Combinations of several step junctions can lead
to other types of optical on-chip connects, e.g., U-turn- or bridge-like configurations.
AU - Hammer, Manfred
AU - Hildebrandt, Andre
AU - Förstner, Jens
ID - 3894
IS - 16
JF - Optics Letters
KW - tet_topic_waveguide
SN - 0146-9592
TI - How planar optical waves can be made to climb dielectric steps
VL - 40
ER -
TY - JOUR
AB - We study the formation of subwavelength solitons in binary metal-dielectric lattices. We show that the transverse modulation of the lattice constant breaks the fundamental plasmonic band and suppresses the discrete diffraction of surface plasmon waves. New types of plasmonic solitons are found, and their characteristics are analyzed. We also demonstrate the existence of photonic-plasmonic vector solitons and elucidate their propagation properties.
AU - Kou, Yao
AU - Förstner, Jens
ID - 3896
IS - 6
JF - Optics Letters
KW - tet_topic_polariton
SN - 0146-9592
TI - Subwavelength binary plasmonic solitons
VL - 40
ER -
TY - JOUR
AB - The coherent state preparation and control of single quantum systems is an important prerequisite for the implementation of functional quantum devices. Prominent examples for such systems are semiconductor quantum dots, which exhibit a fine structure split single exciton state and a V-type three level structure, given by a common ground state and two distinguishable and separately excitable transitions. In this work we introduce a novel concept for the preparation of a robust inversion by the sequential excitation in a V-type system via distinguishable paths.
AU - Mantei, D.
AU - Förstner, Jens
AU - Gordon, S.
AU - Leier, Y. A.
AU - Rai, A. K.
AU - Reuter, Dirk
AU - Wieck, A. D.
AU - Zrenner, Artur
ID - 3900
IS - 1
JF - Scientific Reports
KW - tet_topic_qd
SN - 2045-2322
TI - Robust Population Inversion by Polarization Selective Pulsed Excitation
VL - 5
ER -
TY - JOUR
AB - Experience goods are characterised by information asymmetry and a lack of ex ante knowledge of product quality, such that reliable external signals of quality are likely to be highly valued. Two potentially credible sources of such information are reviews from professional critics and ‘word of mouth’ from other consumers. This paper makes a direct comparison between the relative influences and interactions of reviews from both of these sources on the sales performance of video game software. In order to empirically estimate and separate the effects of the two signals, we analyze a sample of 1480 video games and their sales figures between 2004 and 2010. We find evidence to suggest that even after taking steps to control for endogeneity, reviews from professional critics have a significantly positive influence on sales which outweighs that from consumer reviews. We also find evidence to suggest that reviews from professional critics also interact significantly with other signals of product quality. Consequently, we contend that professional critics adopt the role of an influencer, whereas word-of-mouth opinion acts more as a predictor of sales in the market for video games.
AU - Cox, Joe
AU - Kaimann, Daniel
ID - 288
IS - 6
JF - Journal of Consumer Behaviour
TI - How do reviews from professional critics interact with other signals of product quality? Evidence from the video game industry
VL - 14
ER -
TY - CONF
AB - We examine the effect of the variance of consumer ratings on product pricing and sales using an analytical model, which considers goods that are characterized by experience attributes and informed search attributes (i.e., experience attributes that were transformed in search attributes by consumer ratings). For pure informed search goods, equilibrium price increases and demand decreases in variance. For pure experience goods, equilibrium price and demand decrease in variance. For hybrid goods with low total variance, equilibrium price and demand increase with an increasing relative share of variance caused by informed search attributes when the average rating and total variance of ratings are held constant. Hence, risk-averse consumers may prefer a more expensive good with a higher variance of ratings out of two similar goods with the same average rating. Moreover, our analytical model provides a theoretical foundation for the empirically observed j-shaped distribution of consumer ratings in electronic commerce.
AU - Herrmann, Philipp
AU - Kundisch, Dennis
AU - Zimmermann, Steffen
AU - Nault, Barry
ID - 289
T2 - Proceedings of the 36th International Conference on Information Systems (ICIS), Fort Worth
TI - How do Different Sources of the Variance of Consumer Ratings Matter?
ER -
TY - JOUR
AB - Model transformation is a key concept in model-driven software engineering. The definition of model transformations is usually based on meta-models describing the abstract syntax of languages. While meta-models are thereby able to abstract from uperfluous details of concrete syntax, they often loose structural information inherent in languages, like information on model elements always occurring together in particular shapes. As a consequence, model transformations cannot naturally re-use language structures, thus leading to unnecessary complexity in their development as well as in quality assurance.In this paper, we propose a new approach to model transformation development which allows to simplify the developed transformations and improve their quality via the exploitation of the languages׳ structures. The approach is based on context-free graph grammars and transformations defined by pairing productions of source and target grammars. We show that such transformations have important properties: they terminate and are sound, complete, and deterministic.
AU - Besova, Galina
AU - Steenken, Dominik
AU - Wehrheim, Heike
ID - 290
JF - Computer Languages, Systems & Structures
TI - Grammar-based model transformations: Definition, execution, and quality properties
ER -
TY - GEN
AU - Börding, Paul
ID - 291
TI - Fuzzy Matching von Vor- und Nachbedingungen in Servicespezikationen
ER -
TY - GEN
AU - Osburg, Christina
ID - 292
TI - Fusionen von gesetzlichen Krankenversicherungen zu den Effizienz- und Wechselwirkungen
ER -
TY - CHAP
AU - Blazy, Olivier
AU - Kakvi, Saqib
AU - Kiltz, Eike
AU - Pan, Jiaxin
ID - 2921
SN - 0302-9743
T2 - Lecture Notes in Computer Science
TI - Tightly-Secure Signatures from Chameleon Hash Functions
ER -
TY - CHAP
AB - Opinion mining from physician rating websites depends on the quality of the extracted information. Sometimes reviews are user-error prone and the assigned stars or grades contradict the associated content. We therefore aim at detecting random individual error within reviews. Such errors comprise the disagreement in polarity of review texts and the respective ratings. The challenges that thereby arise are (1) the content and sentiment analysis of the review texts and (2) the removal of the random individual errors contained therein. To solve these tasks, we assign polarities to automatically recognized opinion phrases in reviews and then check for divergence in rating and text polarity. The novelty of our approach is that we improve user-generated data quality by excluding error-prone reviews on German physician websites from average ratings.
AU - Geierhos, Michaela
AU - Bäumer, Frederik Simon
AU - Schulze, Sabine
AU - Stuß, Valentina
ED - Ali, Moonis
ED - Kwon, Young Sig
ED - Lee, Chang-Hwan
ED - Kim, Juntae
ED - Kim, Yongdai
ID - 293
SN - 978-3-319-19065-5
T2 - Proceedings of the 28th International Conference on Industrial, Engineering and Other Applications of Applied Intelligent Systems (IEA/AIE 2015)
TI - Filtering Reviews by Random Individual Error
VL - 9101
ER -
TY - GEN
AU - Materna, GinaJoanna
ID - 294
TI - Fair Trade - Eine neue Perspektive in der internationalen Handelspolitik
ER -
TY - GEN
AU - Goronczewski, Patricia
ID - 295
TI - Fair Trade - An economic investigation of benefits and drawbacks
ER -
TY - GEN
AU - Sosniak, Martin
ID - 297
TI - Evaluation of Pairing Optimization for Embedded Platforms
ER -
TY - GEN
AU - Plonka, Dennis
ID - 298
TI - Entwicklung von Ablösesummen und Gehälter in der Fußball-Bundesliga - Salary Caps als mögliches Modell der Chancengleichheit
ER -
TY - GEN
AU - Gerken, Britta
ID - 299
TI - Elektromagnetische Seitenkanalangriffe auf paarungsbasierte Kryptographie
ER -
TY - BOOK
ED - Betz, Stefan
ID - 2992
TI - Ausgewählte Probleme des Logistikmanagements
ER -
TY - GEN
AU - Neumann, Conrad
ID - 300
TI - Ein Framework für Fuzzy Service Matching basierend auf Fuzzy Sets
ER -
TY - GEN
AU - Bobolz, Jan
ID - 301
TI - Efficient Verifier-Local Revocation for Anonymous Credentials
ER -
TY - GEN
AU - Stroh, Christian
ID - 302
TI - Efficient Attributes for Pairing-Based Anonymous Credentials
ER -
TY - THES
AU - Koutsopoulos, Andreas
ID - 304
TI - Dynamics and Efficiency in Topological Self-Stabilization
ER -
TY - THES
AU - Kniesburges, Sebastian
ID - 305
TI - Distributed Data Structures and the Power of topological Self-Stabilization
ER -
TY - GEN
AU - Kunisch, Christina
ID - 306
TI - Diffusion of Innovations in Social Networks
ER -
TY - GEN
AU - Reimann, Alina
ID - 308
TI - Die Wirksamkeit von Zertifikaten als Qualitätssignal
ER -
TY - GEN
AU - Topal, Barlas
ID - 309
TI - Die Einführung der EU-Merger Guidelines - Effizienz und Wohlfahrtswirkungen
ER -
TY - GEN
AU - Bruns, Melanie
ID - 310
TI - Design of an Evaluation Strategy for Fuzzy Service Matching
ER -
TY - GEN
AU - Schleiter, Patrick
ID - 312
TI - Constructions of Fully Secure Predicate Encryption Schemes
ER -
TY - JOUR
AU - Böhl, Florian
AU - Hofheinz, Dennis
AU - Jager, Tibor
AU - Koch, Jessica
AU - Striecks, Christoph
ID - 3120
IS - 1
JF - J. Cryptology
TI - Confined Guessing: New Signatures From Standard Assumptions
ER -
TY - CONF
AU - Jager, Tibor
AU - Schwenk, Jörg
AU - Somorovsky, Juraj
ID - 3121
T2 - Proceedings of the 22nd ACM SIGSAC Conference on Computer and Communications Security, Denver, CO, USA, October 12-16, 2015
TI - On the Security of TLS 1.3 and QUIC Against Weaknesses in PKCS#1 v1.5 Encryption
ER -
TY - CONF
AU - Jager, Tibor
AU - Schwenk, Jörg
AU - Somorovsky, Juraj
ID - 3122
T2 - Computer Security - ESORICS 2015 - 20th European Symposium on Research in Computer Security, Vienna, Austria, September 21-25, 2015, Proceedings, Part I
TI - Practical Invalid Curve Attacks on TLS-ECDH
ER -
TY - CONF
AU - Heuer, Felix
AU - Jager, Tibor
AU - Kiltz, Eike
AU - Schäge, Sven
ID - 3123
T2 - Public-Key Cryptography - PKC 2015 - 18th IACR International Conference on Practice and Theory in Public-Key Cryptography, Gaithersburg, MD, USA, March 30 - April 1, 2015, Proceedings
TI - On the Selective Opening Security of Practical Public-Key Encryption Schemes
ER -
TY - CONF
AU - Bergsma, Florian
AU - Jager, Tibor
AU - Schwenk, Jörg
ID - 3124
T2 - Public-Key Cryptography - PKC 2015 - 18th IACR International Conference on Practice and Theory in Public-Key Cryptography, Gaithersburg, MD, USA, March 30 - April 1, 2015, Proceedings
TI - One-Round Key Exchange with Strong Security: An Efficient and Generic Construction in the Standard Model
ER -
TY - CONF
AU - Jager, Tibor
ID - 3125
T2 - Theory of Cryptography - 12th Theory of Cryptography Conference, TCC 2015, Warsaw, Poland, March 23-25, 2015, Proceedings, Part {II}
TI - Verifiable Random Functions from Weaker Assumptions
ER -