Knowledge acquisition and maintenance

  1. A. Polleres, M. Frühstück, G. Schenner, G. Friedrich: Debugging Non-ground ASP Programs with Choice Rules, Cardinality and Weight Constraints. 12th International Conference on Logic Programming and Nonmonotonic Reasoning, LPNMR 2013, Corunna, Spain, September 15-19, 2013.  Lecture Notes in Computer Science 8148, Springer 2013.
  2. K. Shchekotykhin, G. Friedrich, P. Fleiss, P. Rodler: Interactive ontology debugging: two query strategies for efficient fault localization, Journal of Web Semantics, 12-13: 88-103, 2012.
  3. K. Shchekotykhin, G. Friedrich: Query Strategy for Sequential Ontology Debugging. International Semantic Web Conference, Shanghai, China, 2010.
  4. D. Jannach, K. Shchekotykhin, G. Friedrich: Automated Ontology Instantiation from Tabular Web Sources - The AllRight System, Journal of Web Semantics, 7: 136-153, 2009.
  5. K. Shchekotykhin, G. Friedrich: Argumentation based constraint acquisition, IEEE International Conference on Data Mining, Miami, Florida, USA, 2009.
  6. K. Shchekotykhin, D. Jannach, G. Friedrich: xCrawl: A High-Recall Crawling Method for Web Mining, IEEE International Conference on Data Mining, Pisa, Italy, 2008.
  7. K. Shchekotykhin, D. Jannach, G. Friedrich, O. Kozeruk: Allright: Automatic ontology instantiation from tabular web documents, International Semantic Web Conference, Busan, Korea, 2007.
  8. G. Friedrich G., K. Shchekotykhin: A General Diagnosis Method for Ontologies, International Semantic Web Conference, Galway, Ireland, 2005 (shortlisted for the best paper award - 9 out of 217 submitted papers).
  9. G. Friedrich, M. Stumptner, F. Wotawa: Model-based Diagnosis of Hardware-Designs, Artificial Intelligence, 111 (1-2), 1999.
  10. L. Console, G. Friedrich, D. Theseider Dupré: Model-based diagnosis meets error diagnosis in logic programs, International Joint Conference on Artificial Intelligence, Chambéry, France, August 1993.


Knowledge-based diagnosis and repair

  1. W. Mayer, G. Friedrich, M. Stumptner: On computing correct processes and repairs using partial behavioral models, European Conference on Artificial Intelligence, Montpellier, France, 2012.
  2. G. Friedrich, W. Mayer, M. Stumptner: Diagnosing Process Trajectories Under Partially Known Behavior, European Conference on Artificial Intelligence, Lisbon, Portugal, 2010.
  3. G. Friedrich, M. Fugini, E. Mussi, B. Pernici, G. Tagni: Exception Handling for Repair in Service-Based Processes, IEEE Transactions on Software Engineering, 36 (2), 2010.
  4. W. Mayer, G. Friedrich, M. Stumptner: Diagnosis of Service Failures by Trace Analysis with Partial Knowledge, International Conference on Service-Oriented Computing, 2010: 334-349, San Francisco, California, USA.
  5. G. Friedrich: Theory diagnoses: A concise characterization of faulty systems. In Proceedings of the International Joint Conference on Artificial Intelligence, Chambéry, France, August 1993. Morgan Kaufmann Publishers, Inc. An extended version appeared in the Annals of Mathematics and Artificial Intelligence.
  6. G. Friedrich, G. Gottlob, W. Nejdl: Formalizing the repair process, European Conference on Artificial Intelligence, Vienna, Austria, August 1992. An extended version appeared in the Annals of Mathematics and Artificial Intelligence.
  7. H. Freitag, G. Friedrich: Focusing on independent diagnosis problems,  International Conference on Principles of Knowledge Representation and Reasoning, Cambridge, MA, USA, October 1992. An improved version appeared in the Annals of Mathematics and Artificial Intelligence.
  8. G. Friedrich and W. Nejdl: Choosing observations and actions in model-based diagnosis-repair systems, International Conference on Principles of Knowledge Representation and Reasoning, Cambridge, MA, USA, October 1992.
  9. G. Friedrich and F. Lackinger: Diagnosing temporal misbehavior, International Joint Conference on Artificial Intelligence, Sydney, Australia, August 1991. Morgan Kaufmann Publishers, Inc.
  10. G. Friedrich, G. Gottlob, W. Nejdl: Physical impossibility instead of fault models. National Conference on Artificial Intelligence (AAAI), pages 331-336, Boston, USA, August 1990. Also appeared in Readings in Model-Based Diagnosis (Morgan Kaufmann, 1992).
  11. G. Friedrich, F. Lackinger, W. Nejdl: Redefining the candidate space in model-based diagnosis, European Conference on Artificial Intelligence, Stockholm, Sweden, 1990.
  12. G. Friedrich and W. Nejdl: MOMO - Model-based diagnosis for everybody. In Proceedings of the IEEE Conference on Artificial Intelligence Applications, Santa Barbara, March 1990. A slightly revised and extended version appeared in Readings in Model-Based Diagnosis (Morgan Kaufmann, 1992).

Recommender systems

  1. D. Jannach, M. Zanker, A. Felfernig, G. Friedrich: Recommender Systems - An Introduction, Cambridge University Press, 2010, (in Japanese 2012 by Kyoritsu Shuppan Co., Ltd.).
  2. A. Felfernig, G. Friedrich, D. Jannach, M. Zanker: Developing Constraint-based Recommenders, In: F. Ricci et al. (Ed.): Recommender Systems Handbook, Springer, 2010, pp. 187-215.
  3. G. Friedrich, M. Zanker: A Taxonomy for Generating Explanations in Recommender Systems, AI Magazine 32(3), pp. 90-98, 2011.
  4. A. Felfernig, G. Friedrich, M. Schubert, M. Mandl, M. Mairitsch, E. Teppan: Plausible Repairs for Inconsistent Requirements, International Joint Conference on Artificial Intelligence, Pasadena, USA, 2009.
  5. A. Felfernig, G. Friedrich, E. Teppan, K. Isak: Intelligent Debugging and Repair of Utility Constraint Sets in Knowledge-based Recommender Applications, ACM International Conference on Intelligent User Interfaces, pp. 218-226, Canary Islands, Spain, Jan. 13-16, 2008.
  6. A. Felfernig, G. Friedrich, L. Schmid-Thieme, IEEE Intelligent Systems: Special Issue on Recommender Systems, May/June 2007.
  7. A. Felfernig, G. Friedrich, D. Jannach, M. Zanker: An Integrated Environment for the Development of Knowledge-Based Recommender Applications, Intl. Journal of Electronic Commerce, Special Issue on Recommender Systems, 2 (2006), 11/2006, pp. 11-34.
  8. G. Friedrich: Elimination of Spurious Explanations, European Conference on Artificial Intelligence, August 22-27, 2004, Valencia, Spain.

Knowledge-based configuration of products and services

  1. A. Ryabokon, Gerhard Friedrich, A. A. Falkner: Conflict-Based Program Rewriting for Solving Configuration Problems. 12th International Conference on Logic Programming and Nonmonotonic Reasoning, LPNMR 2013, Corunna, Spain, September 15-19, 2013.  Lecture Notes in Computer Science 8148, Springer 2013.
  2. E. Teppan, G. Friedrich, A. Falkner: QuickPup: A Heuristic Backtracking Algorithm for the Partner Units Configuration Problem, Innovative AI Applications, Toronto, Canada 2012, a patent is filed by Siemens.
  3. M. Aschinger, C. Drescher, G. Friedrich, G. Gottlob, P. Jeavons, A. Ryabokon, E. Thorstensen: Optimization Methods for the Partner Units Problem, Integration of AI and OR Techniques in Constraint Programming for Combinatorial Optimization Problems, 2011: 4-19.
  4. Th. Blecker, G. Friedrich: Mass Customization Manufacturing Systems (Ed.). IEEE Transactions on Engineering Management, Special Issue, Volume 54, No. l, Feb. 2007.
  5. A. Felfernig, G. Friedrich, D. Jannach: Consistency-based Diagnosis of Configuration Knowledge Bases, Artificial Intelligence, Volume 152, Issue 2, February 2004, pp. 213-234.
  6. L. Ardissono, A. Goy, G. Petrone, A. Felfernig, G. Friedrich, D. Jannach, M. Zanker, R. Schäfer: A Framework for the Development of Personalized, Distributed Web-Based Configuration Systems, AI Magazine, Vol. 24, No. 3., AAAI, Fall 2003, pp. 93-110.
  7. A. Felfernig, G. Friedrich, D. Jannach, M. Zanker: Semantic Configuration Web Services in the CAWICOMS Project, International Semantic Web Conference, Sardinia, Italy, June 2002.
  8. L. Ardissono, A. Felfernig, G. Friedrich, D. Jannach, M. Zanker, R. Schäfer: A Framework for Rapid Development of Advanced Web-based Configurator Applications, European Conference on Artificial Intelligence - Prestigious Applications of Intelligent Systems (PAIS), Lyon, France, 2002, pp. 618-622.
  9. L. Ardissono, A. Felfernig, G. Friedrich, A. Goy, D. Jannach, M. Meyer, G. Petrone, R. Schäfer, W. Schütz, M. Zanker: Personalizing on-line configuration of products and services, European Conference on Artificial Intelligence, Lyon, France, 2002.
  10. A. Felfernig, G. Friedrich, D.Jannach, M. Stumptner: Consistency-based Diagnosis of Configuration Knowledge bases, European Conference on Artificial Intelligence, Berlin, Germany, 2000.
  11. G. Fleischanderl, G. Friedrich, A. Haselböck, H. Schreiner, M. Stumptner: Configuring Large Systems Using Generative Constraint Satisfaction, IEEE Intelligent Systems, Vol. 13, No. 4, July/August 1998, pp. 59-68.
  12. Q. Guan and G. Friedrich: Fuzzy control over constraint satisfaction problem solving in structural design, IEEE International Conference on Fuzzy Systems, San Francisco, USA, March 1993.
  13. G. Friedrich, W. Höllinger, C. Stary, M. Stumptner: Objview: A task-oriented, graphics-based tool for object visualization and arrangement, European Conference on Object Oriented Programming, Nottingham, UK, June 1989.

Planning and scheduling

  1. V. Mersheeva,  G. Friedrich: Multi-UAV Monitoring with Priorities and Limited Energy Resources. International Conference on Automated Planning and Scheduling, ICAPS 2015, Jerusalem, Israel, June 7-11, 2015. AAAI Press 2015.
  2. Vera Mersheeva, Gerhard Friedrich: Routing for continuous monitoring by multiple micro UAVs in disaster scenarios, European Conference on Artificial Intelligence, Montpellier, France, 2012.
  3. J. Kuster, D. Jannach, G. Friedrich: Applying Local Rescheduling in response to schedule disruptions, Annals OR 180(1): 265-282, 2010.
  4. J. Kuster, D. Jannach, G. Friedrich: Handling Alternative Activities in Resource-Constrained Project Scheduling Problems, accepted at International Joint Conference on Artificial Intelligence IJCAI'07 for publication and oral presentation, Hyderabad, India, 2007.