Christian Freksa
Personal Information
| Title | Prof. Ph. D. |
|---|---|
| Function | Professor |
| Office | 3.41 |
| Office Hours | friday 14:00 / by apptm. |
| Phone | 64230 |
| freksa |
Profession
| About me | I am a professor for informatics at Universität Bremen and head of the cognitive systems group (CoSy). My research interests focus on knowledge representation, specifically on the representation of spatial and temporal knowledge and on reasoning with qualitative, approximate, incomplete, imprecise, fuzzy, uncertain, and conflicting knowledge. In the CoSy research group we employ formal and computational approaches to knowledge representation, we design computer models of spatial environments for simulation studies, and we carry out autonomous robotic experiments in our spatial environment laboratory using diverse intelligent technologies. We closely cooperate with researchers from other disciplines interested in the investigation of spatial structures, especially cognitive psychology, linguistics, geography, and design. I coordinate the Transregional Collaborative Research Center Spatial Cognition - Reasoning, Action, Interaction (SFB/TR8), a joint enterprise of the Universities of Bremen and Freiburg funded by the Deutsche Forschungsgemeinschaft (DFG) and the International Quality Network on Spatial Cognition (IQN) funded by the German Academic Exchange Service (DAAD). In my previous position at Universität Hamburg (1991-2002) I coordinated the DFG Spatial Cognition Priority Program and participated in the EU HCM project Spacenet. |
|---|---|
| Interests | Knowledge representation in cognitive systems |
| Research Projects | DFG SPP project Spatial Inference |
| Teaching | Cognitive Systems 2 |
Publications
2013
- . 2013.The `Space' in Spatial Assistance Systems: Conception, Formalisation, and Computation. Book: Representing Space in Cognition: Behaviour, Language, and Formal Models..Series: Explorations in Language and Space.ed. Thora Tenbrink, Jan Wiener, Christophe Claramunt. .978-0-19-967991-1.
2012
- . 2012. .KI - Künstliche Intelligenz.page 1-7.0933-1875
- . 2012.Barrier-Free Mapping for Development and Poverty Reduction.Role of Volunteered Geographic Information in Advancing Science: Quality and Credibility.ed. Budhendra Bhaduri, Rodolphe Devillers, Muki Haklay, Michael Goodchild
- . 2012. .First Annual Conference on Advances in Cognitive Systems, 2012 - Poster Collection. Palo Alto, California.pages 35-52.ed. Pat Langley
2011
- . 2011. .Proceedings of the 5th European Conference on Mobile Robots.pages 7-12.ed. Achim J. Lilienthal, Tom Duckett
2010
- . 2010. .Industrie Management.vol. 1/2010.pages 61-65.
- . 2010. .Proceedings of the 7th CIRP International Conference on Intelligent Computation in Manufacturing Engineering (ICME 2010)
- . 2010. .10th Biannual Meeting of the German Society for Cognitive Science (KogWis 2010).pages 103-104.ed. Johannes Haack, Heike Wiese, Andreas Abraham, Christian Chiarcos.Universitätsverlag Potsdam
- . 2010. .Studying Visual and Spatial Reasoning for Design Creativity (SDC).
2008
- . 2008. .Proc. of EDRAMOVE workshop on "Movement and orientation in built environments: evaluating design rationale and user cognition", EDRA 39th Annual Conference.SFB/TR 8 Report No. 015-05/2008.015-05/2008.pages 13-19.ed. Saif Haq, Christoph Hölscher, Sue Torgrude
- . 2008.SailAway: Spatial Cognition in Sea Navigation.Künstliche Intelligenz.vol. 22.1.pages 28-30
- . 2008. .Kognitive {P}sychologie - Ausgewählte {G}rundlagen- und {A}nwendungsbeispiele.pages 87-108.ed. G.D. Rey, T. Wehr.Pabst Science Publishers.Lengerich
- . 2008.Towards a Generalization of Self-Localization.Robotics and Cognitive Approaches to Spatial Mapping.Springer Tracts in Advanced Robotics.vol. 38.pages 105-138.ed. Margaret E. Jefferies, Wai-Kiang Yeap. .Berlin
- . 2008.Qualitative Methoden zur Steuerung von Agenten.Industrie Management.vol. 24.4.pages 21-24
- ed. Christian Freksa, Nora Newcombe, Peter Gärdenfors, Stefan Wölfl.2008.Spatial Cognition VI: Learning, Reasoning, and Talking about Space, International Conference Spatial Cognition 2008, Freiburg, Germany, September 15-19, 2008.Lecture Notes in Artificial Intelligence.5248.Springer
2007
- . 2007.Aspect-oriented building design: Toward computer-aided approaches to solving spatial constraints in architecture.Applied Spatial Cognition: From Research to Cognitive Technology.pages 75-102.ed. Gary L. Allen. .Mahwah, NJ, USA.0-8058-5299-9.
- . 2007.Eye movements and smart technology.Computers in Biology and Medicine.vol. 37.pages 983-988.
2006
- . 2006. .Journal of Spatial Science.vol. 51.1
- . 2006. .Proceedings of the 7th International Conference on Cognitive Modeling, Trieste (ICCM 2006).pages 50-55.ed. D. Fum, F. {del Missier}, A. Stocco.Edizioni Goliardiche.Trieste
- . 2006. .Proceedings of the 7th International Conference on Cognitive Modeling, Trieste (ICCM 2006).pages 349 - 350.ed. D. Fum, F. {del Missier}, A. Stocco.Edizioni Goliardiche.Trieste
- . 2006. .Poster abstracts of 29th Annual German Conference on Artificial Intelligence (KI2006).page 1-3.ed. C. Freksa, M. Kohlhase, K. Schill.Universität Bremen.3-88722-668-2
2005
- ed. T. Barkowsky, C. Freksa, M. Knauff.2005.Special Issue: Spatial and visual components in mental reasoning about space.Spatial Cognition and Computation.vol. 5.2&3.Lawrence Erlbaum Associates.Mahwah, NJ, USA
- . 2005. .Map-based Mobile Services - Theories, Methods and Implementations.pages 57-74.ed. Liqiu Meng, Alexander Zipf, Tumasch Reichenbacher.Springer.Berlin.
- . 2005. .Spatial Cognition IV. Reasoning, Action, Interaction: Proceedings of Spatial Cognition 2004.pages 204-213.ed. Christian Freksa, Markus Knauff, Bernd Krieg-Brückner, Bernhard Nebel, Thomas Barkowsky.Springer.Berlin
- . 2005. .Proc. Thirteenth European Conference on Eye Movements ECEM13.pages 41.ed. M. Groner, R. Groner, R. Müri, K. Koga, S. Raess, P. Sury.University of Bern, Switzerland
- . 2005.Eye movements and smart technology.Fourth Starkfest Conference on Vision and Movement in Men and Machines. Berkeley, May 2005.pages 22-25.Electronics Research Laboratory.University of California, Berkeley
- . 2005. .Poster Proceedings of the Conference on Spatial Information Theory (COSIT). 14. - 18. Sept. 2005, Ellicottville, New York.
- . 2005.Reasoning with mental and external diagrams: computational modeling and spatial assistance - Papers from the 2005 AAAI Spring Symposium.SS-05-06.AAAI Press.Menlo Park, CA
- . 2005.Umgebungsmodelle und Raumkognition.INFORMATIK 2005 - Informatik LIVE! Band 2, Beiträge der 35. Jahrestagung der Gesellschaft für Informatik e.V. (GI), Bonn, 19. bis 22. September 2005.Lecture Notes in Informatics.vol. 68.pages 663-672.ed. Armin B. Cremers, Rainer Manthey, Peter Martini, Volker Steinhage.Proceedings.German Informatics Society
2004
- . 2004. .Visual and Spatial Reasoning in Design III.pages 255–279.ed. J. S. Gero, B. Tversky, T. Knight.Key Centre of Design Computing and Cognition.University of Sydney.
- . 2004. .Geoinformation und Mobilität - von der Forschung zur praktischen Anwendung. Beiträge zu den Münsteraner GI-Tagen 2004.IfGIprints.pages 205-217.ed. Martin Raubal, Adam Sliwinski, Werner Kuhn.Institut für Geoinformatik.Münster
- ed. Christian Freksa, Georg Vrachliotis, Sven Bertel.2004.Mental conceptions of emergent spaces in architectural design.Workshop notes at First Intl. Conference on Design Computing (DCC04).MIT, Cambridge, MA
- . 2004. .Workshop on Artificial Intelligence in Mobile Systems (AIMS'04).page 1-8.ed. Jörg Baus, Christian Kray, Robert Porzel.SFB 378 Memo 84.Saarbrücken
- ed. M. J. Egenhofer, C. Freksa, H. J. Miller.2004.Geographic Information Science, Third International Conference GIScience 2004.Lecture Notes in Computer Science.vol. 3234. .Berlin
- . 2004. .Proc. European Conference on Artificial Inteligence (ECAI'04).pages 1122-1128.ed. R. López de Mantaras, L. Saitta.IOS Press.Amsterdam
2003
- . 2003.Qualitative spatial reasoning about relative position: The tradeoff between strong formal properties and successful reasoning about route graphs..Spatial Cognition III.pages 385-400.ed. C. Freksa, C. Habel, K. F. Wender. .14197 Berlin
- . 2003.Spatial cognition III – routes and navigation, human memory and learning, spatial representation and spatial reasoning, LNAI 2685.Springer, Berlin
- . 2003.Qualitative spatial reasoning about relative position: The tradeoff between strong formal properties and successful reasoning about route graphs.Spatial Cognition III.Lecture Notes in Artificial Intelligence.vol. 2685.pages 385–400.ed. Christian Freksa, Wilfried Brauer, Christopher Habel, Karl Friedrich Wender
2002
- . 2002. .KI 4.4
- . 2002. .KI.4.pages 5-9
2001
- . 2001. .Spatial Information Theory - Foundations of Geographic Information Science.pages 306-321.ed. D. R. Montello.Springer.Berlin
- . 2001.Interview with Prof. Lofti A. Zadeh.KI.vol. 3.pages 40-43
2000
- . 2000. .Spatial Cognition II - Integrating Abstract Theories, Empirical Studies, Formal Methods, and Practical Applications.pages 100-114.ed. C. Freksa, W. Brauer, C. Habel, K.F. Wender.Springer.Berlin.
- . 2000. .Spatial Cognition II - Integrating Abstract Theories, Empirical Studies, Formal Methods, and Practical Applications.pages 54-71.ed. C. Freksa, W. Brauer, C. Habel, K.F. Wender.Springer.Berlin.
- . 2000. .Intelligent Autonomous Systems 6.pages 809-816.ed. E. Pagello et al.IOS Press.Amsterdam
- . 2000.Spatial Cognition II. Integrating Abstract Theories, Empirical Studies, Formal Methods, and Practical Applications.
- . 2000.Diagrammatic instruction maps for human-robot interaction.Service Robotics - Applications and Safety Issues in an Emerging Market. Workshop Notes. European Conference on Artificial Intelligence 2000 (ECAI 2000).pages 17-18.ed. T. Röfer, A. Lankenau, R. Moratz
1999
- . 1999. .Behavioral and Brain Sciences.vol. 22.4.pages 616-617
- . 1999. .Mental Models in Discourse Processing and Reasoning.pages 195-212.ed. G. Rickheit, C.Habel.Elsevier.Amsterdam
- . 1999. .Visual and Spatial Reasoning in Design.pages 15-32.ed. J.S. Gero, B. Tversky.Key Centre of Design Computing and Cognition.University of Sydney
- . 1999.Spatial information theory- Cognitive and computational foundations of geographic information science (COSIT 99)
- . 1999. .International Journal of Geographical Information Science.vol. 13.8.pages 747-774
1998
- . 1998. .Fuzzy-Neuro Systems 98.pages 106-112.ed. W. Brauer.Infix.Sankt Augustin
- . 1998. .Richtungen im Raum.pages 231-246.ed. G. Rickheit.Westdeutscher Verlag.Opladen
- . 1998. .Spatial Cognition - An interdisciplinary approach to representing and processing spatial knowledge.pages 313-336.ed. C. Freksa, C. Habel, K. F. Wender.Springer.Berlin.
- . 1998.Spatial Cognition I - An interdisciplinary approach to representing and processing spatial knowledge.
- . 1998.Interpretative and constructive processes in spatially organized knowledge structures.Advances in Artificial Intelligence.pages 272
- . 1998. .Lund University Cognitive Science.
1997
- . 1997.Spatial cognition: the role of landmark, route, and survey knowledge in human and robot navigation.Informatik 97.pages 41-50.ed. M. Jarke, K. Pasedach, K. Pohl.Berlin, Heidelberg, New York.Springer.http://www.cosy.informatik.uni-bremen.de/spp/SPP_onlines/ProjektD/gi97.pdf
- . 1997. .Foundations of Computer Science. Potential – Theory – Cognition.pages 379-387.ed. C. Freksa, M. Jantzen, R. Valk.Springer.Berlin.
- . 1997.Foundations of Computer Science. Potential -Theory - Cognition.
- . 1997. .Spatial information theory: A theoretical basis for GIS. Proceedings of COSIT 97.pages 347-361.ed. S. Hirtle, A. Frank.Springer.Berlin, Heidelberg
- . 1997. .Perspektive in Sprache und Raum, Studien zur Kognitionswissenschaft.pages 147-168.ed. C. Umbach, M. Grabski, R. Hörnig.Deutscher Universitäts-Verlag.Wiesbaden
1996
- . 1996.Visual attention and cognition.
- . 1996. .Applied Intelligence.vol. 6.pages 49-58
- . 1996. .Geographic objects with indeterminate boundaries.pages 109-121.ed. P. Burrough, A. Frank A.Taylor and Francis, London
- . 1996. .ECAI-96 Workshop on Representations and processes between vision and natural language
- . 1996. .Wörterbuch der Kognitionswissenschaft.pages 344-347.ed. G. Strube, B. Becker C. Freksa, U. Hahn, K. Opwis, G. Palm.Klett-Cotta, Stuttgart
- . 1996.Wörterbuch der Kognitionswissenschaft.Klett-Cotta, Stuttgart
- . 1996.Erratum to "Temporal Reasoning Based on Semi-Intervals" [Artif. Intell. 54 (1992) 199-227].Artificial Intelligence.vol. 87.pages 387
1995
- . 1995. .Optometry & Vision Science.72, 7.pages 467-477
- . 1995.Themenheft Räume, Kognitionswissenschaft 4
- . 1995.Movies: an integrated space-time representation for qualitative navigation.Kognitive Robotik.ed. B. Krieg-Brückner, C. Herwig.Zentrum für Kognitionswissenschaften, Universität Bremen
- . 1995.Qualitative orientation and navigation using purposive vision
- . 1995. .KI9.6
- ed. C. Freksa, B. Berendt.1995. .European Conference on Cognitive Science, Saint-Malo 1995
1994
- . 1994.A framework for comparing theories for qualitative spatial reasoning.Spatial and temporal reasoning.AAAI Workshop Seattle.ed. Rodríguez RV
- . 1994. .ECAI’94 Workshop W12 Spatial and temporal reasoning.ed. RV Rodríguez.Amsterdam
- . 1994. .Fuzzy systems in computer science.pages 155-169.ed. R. Kruse, J. Gebhardt, R. Palm.Vieweg, Braunschweig/Wiesbaden
- . 1994. .IEEE Expert.IEEE.9.pages 20-21
1993
- . 1993. .Qualitative reasoning and decision technologies, Proc. QUARDET93.pages 483 - 492.ed. N. P. Carrete, M. G. Singh.Barcelona
- . 1993.On the utilization of spatial structures for cognitively plausible and efficient reasoning.Proc. of the Workshop on Spatial and temporal reasoning.IJCAI’93.pages 61-66.ed. FD. Anger HW. Güsgen, J. v.Benthem.Chambery
- . 1993. .Prospects for Artificial Intelligence.pages 140-147.ed. A. Sloman, D. Hogg, G. Humphreys, A. Ramsay.Amsterdam: IOS-Press
- ed. WH. Zangemeister, S. Egner, F. Dannheim, C. Freksa.1993.Short-term adaptation of search-scan- & reading-path in patients with stroke-related visual field defects.Intern. Congr. on stroke rehabilitation.Berlin
- . 1993.Qualitatives räumliches Schließen mit Wissen über Richtungen, Entfernungen und Pfade..KI 4.pages 21-28
1992
- . 1992. .Theories and methods of spatio-temporal reasoning in geographic space.pages 162 - 178.ed. A. U. Frank, I. Campari, U. Formentini.Springer.Berlin
- . 1992. .Artificial Intelligence.vol. 54.1.pages 199 - 227
- . 1992. .IEEE Intern. Conf. Systems Man and Cybernetics.IEEE.SMC’92 – 1992.pages 261-266.Chicago
- . 1992.Orientation-based qualitative spatial reasoning.ECAI ’92 Workshop Spatial Concepts: Connecting cognitive theories with formal representations
- . 1992. .KI 3/92.pages 95-98
1991
- . 1991. .Decision Support Systems and Qualitative Reasoning.pages 181 - 187.ed. M. Singh, L. Travé-Massuyès.North-Holland, Amsterdam
- . 1991. .Cognitive and linguistic aspects of geographic space.pages 361-372.ed. DM. Mark, AU. Frank.Kluwer, Dordrecht
- . 1991.Wissensdarstellung und Kognitionsforschung.Wissensrepräsentation.pages 61-68
1990
- . 1990.Cognitive Science – eine Standortbestimmung.Universitas.525.pages 232-240
- . 1990.Warum interessiert sich die Kognitionsforschung für die Darstellung räumlichen Wissens?.Repräsentation und Verarbeitung räumlichen Wissens.page 1-15.ed. C Freksa, C Habel.Springer, Berlin
- ed. C. Freksa, C. Habel.1990. .Informatik-Fachberichte.245.Springer, Berlin
- . 1990. .International Computer Science Institute Report TR-90-016. Berkeley, California
- . 1990. .Technische Universität München; Institut für Informatik
- . 1990.The SpaceGarden bibliography.Repräsentation und Verarbeitung räumlichen Wissens.Informatik-Fachberichte.245.pages 267-353.ed. C. Freksa, C. Habel.Springer, Berlin
1989
- . 1989.Connectionist approaches to the description of spatial knowledge.Report FKI-98-89.TU München
- . 1989.Wissensbasierte Systeme.Informatik-Fachberichte.227
- . 1989.Wissensdarstellung und Kognitionsforschung,.Informationstechnik it 31.2.pages 134-140
1988
- . 1988.Wissensrepräsentation in künstlichen symbolverarbeitenden Systemen.Wissenspsychologie.pages 505-528.ed. H. Mandl, H. Spada, Hg,.Psychologie Verlags Union, München
- . 1988.Intrinsische vs. extrinsische Repräsentation zum Aufgabenlösen oder die Verwandlung von Wasser in Wein.Wissensarten und ihre Darstellung.pages 155-165.ed. G. Heyer, J. Krems, G. Görz.Springer, Berlin
- . 1988.Cognitive Science – eine Standortbestimmung.Wissensarten und ihre Darstellung.page 1-12.ed. G. Heyer, J. Krems, G. Görz.Springer, Berlin
- . 1988. .Künstliche Intelligenz..GWAI-88.pages 327-333.ed. W. Hoeppner.Springer, Berlin
- . 1988.Sprachartige Beschreibung von Objekten und räumlichen Gegebenheiten in einem konnektionistischen System. Skizze eines Forschungsprojektes.Workshop Konnektionismus, GMD Berichte.ed. C. Lischka, J. Kindermann.St. Augustin
1987
- . 1987.Spezielle Sektion: Kognition – Wissensstrukturen beim Aufgabenlösen.GWAI-87, 11th German Workshop on Artificial Intelligence.Informatik-Fachberichte 152.pages 277-305.ed. K. Morik, Hg.Springer, Berlin
- . 1987.An approach to structuring and formalizing knowledge for a design support system.Artificial Intelligence II. Methodology, Systems, Applications.pages 271-279.ed. P. Jorrand, V. Sgurev.North-Holland, Amsterdam
1986
- . 1986.Computerunterstützte Planung von Ferienreisen – ein fiktives Beispiel.Kognitive Aspekte der Mensch-Computer-Interaktion.pages 22-36.ed. G. Dirlich, C. Freksa, U. Schwatlo, K. Wimmer, Hg.Springer, Berlin
- . 1986.Kognitive Aspekte der Mensch-Computer-Interaktion.Informatik-Fachberichte 120.Springer, Berlin
- . 1986.Knowledge representation for interactive aircraft design.Expert systems and knowledge engineering.pages 221-230.ed. T. Bernold.North-Holland, Amsterdam
1985
- . 1985.Cognition and Representation.GWAI-84. 8th German Workshop on Artificial Intelligence.pages 119-144.ed. Hg. Laubsch J.Springer, Berlin
- . 1985.Towards a theory of knowledge representation systems.Artificial Intelligence Methodology, Systems, Applications.North-Holland, Amsterdam.pages 77-84.ed. W. Bibel, B. Petkoff (Eds).North-Holland, Amsterdam
- . 1985.Aspekte der Wissensrepräsentation in künstlichen Systemen.Lernen im Dialog mit dem Computer.pages 121-130.ed. H. Mandl, PM. Fischer.Urban & Schwarzenberg, München
- . 1985.Erhebung zur Kognitionsforschung im deutschsprachigen Raum
1984
- . 1984.A description of knowledge representation features for a design support system.Report ATP-29-V-84.Forschungsgruppe Künstliche Intelligenz, Institut für Informatik.Technische Universität München
1983
- . 1983.An overview of formalisms, issues, languages, and systems for the representation of knowledge.Report ATP-22-XII-83.Technische Universität München; Institut für Informatik
- ed. G. Dirlich, C. Freksa, U. Furbach.1983.A central problem in representing human knowledge in artificial systems: the transformation of intrinsic into extrinsic representations.Proc. 5th Cognitive Science Conference.Rochester
1982
- . 1982.FUZZY.The Handbook of Artificial Intelligence.vol. Vol. 2.ed. In A Barr, EA Feigenbaum
- . 1982.Linguistic description of human judgments in expert systems and in the ‘soft’ sciences.Approximate reasoning in decision analysis.pages 297-305.ed. MM Gupta, E Sanchez.North-Holland, Amsterdam
- ed. Christian Freksa, R. López de Mántaras.1982.An adaptive computer system for linguistic categorization of "soft" observations in expert systems and in the social sciences.Proc. 2nd World Conf. on Mathematics at the service of man.Las Palmas
- . 1982.Linguistische Kategorisierung von Verhaltensmerkmalen, MEMO 3, Projekt Linguistische Kategorisierung von Verhaltensmerkmalen, Max-Planck-Institut für Psychiatrie.Abstract in J. of Pragmatics.6.pages 373-374
1981
- . 1981.Linguistic pattern characterization and analysis.Department of Electrical Engineering and Computer Sciences.University of California
- . 1981.Algorisme d´adaptació recursiva de funcions de possibilitat per a l´aprenentatge de la significació de conceptes imprecisos.Convencion de Informatica Latina.pages 250-257.Barcelona
1980
- . 1980.L-FUZZY – an AI language with linguistic modification of patterns.ERL Memo.No. UCB/ERL M80/10
- . 1980.Communication about visual patterns by means of fuzzy characterizations.Congress of Psychology.XXIInd Intern
1979
- . 1979.Cognitive models direct scanpath eye movements: evidence obtained by means of computer processing of perceptual scanpath eye movements.XII Intern. Conference on Medical & Biological Engineering.Jerusalem
1978
- . 1978.The future of AI and its impact on society.SIGART 67.pages 7-9
1976
- . 1976.SOMNIA – Design and development of an interactive on-line data management system for biomedical applications
1973
- . 1973.On-line classification of sleep stages with a lab computer.The Nature of Sleep.pages 9-12.ed. Jovanovic UJ.Gustav Fischer Verlag, Stuttgart
- . 1973.A time-dependent model of the sleep EEG.Sleep.pages 253-257.ed. WP.Koella, P. Levin.Karger, Basel