Jae Hee Lee

homepage: http://cosy.informatik.uni-bremen.de/staff/jae-hee-lee

Research Topic : Qualitative spatial reasoning with orientation information

Advisor : Prof Dr Christian Freksa

email: jay[at]informatik.uni-bremen.de
phone: +49-421-218-64-289
fax: +49-421-218-98-64-289

FB 3 Mathematik & Informatik
University of Bremen
Enrique-Schmidt Str. 5
D-28359 Bremen, Germany.

 

About Me

I am a researcher in the Cognitive Systems Group working in the R3-[Q-Shape] project of the Transregional Collaborative Research Center “Spatial Cognition” (SFB/TR8).

My research aims to develop a theoretical framework for qualitative spatial reasoning and its integration with rule-based reasoning systems, which will ultimately lead to an improvement of the interaction between human and computer.

I am also a doctoral researcher in the International Research Training Group “Semantic Integration of Geospatial Information” (IRTG SIGI) since May 2010. In 2009 I received my diploma degree in mathematics from the University of Bremen for the thesis “Analyse und Konstruktion von Parrondo-Paradoxa”, which was awarded with the “Fachbereichspreis 2009”.

My Research

Commonsense reasoning is a major challenge in Artificial Intelligence. As qualitative descriptions comprise a great deal of our everyday language, commonsense reasoning is concerned with developing and processing such qualitative representations. This applies especially to commonsense reasoning about space, where spatial objects are in particular characterized by their spatial relations to each other. Consequently, to endow spatial applications (e.g., CAD, GIS) with the commonsense reasoning ability, a thorough understanding of qualitative spatial relations is required. Qualitative Spatial Reasoning (QSR), a subfield of AI, approaches this very challenge. QSR aims at providing calculi which allow a machine to represent and reason with spatial relations using a finite set of symbols. In my thesis, I want to investigate qualitative spatial reasoning with directional information in regard to its reasoning properties. As reasoning with directional information, in particular with relative directions is intrinsically hard, I am investigating heuristic and approximative methods.

Link to my PhD proposal

Publications

Journal Articles

  • Diedrich Wolter, Jae Hee Lee?. 2010?. Qualitative reasoning with directional relations?. Aritificial Intelligence?. vol. 174?. 18?. pages 1498–1507

Conference Papers

  • Mehul Bhatt, Jae Hee Lee, Carl Schultz?. 2011?. CLP(QS): A Declarative Spatial Reasoning Framework?. Proceedings of the 10th International Conference on Spatial Information Theory (COSIT 2011), Belfast, Maine.)?. Lecture Notes in Computer Science?. Springer [PDF]

Workshop Papers, Conference Posters and Short Papers

  • Jae Hee Lee, Diedrich Wolter?. 2011?. A new perspective on reasoning with qualitative spatial knowledge?. Proceedings of IJCAI-2011 Workshop Benchmarks and Applications of Spatial Reasoning?. ed. Jochen Renz, Anthony G. Cohn, , Stefan Wölfl [PDF]
  • Jae Hee Lee?. 2011?. Cylindrical algebraic decomposition for reasoning about qualitative spatial knowledge?. SIGSAM Bull.?. vol. 44?. pages 123–124?. 0163-5824?. http://doi.acm.org/10.1145/1940475.1940496
  • Frank Dylla, Jae Hee Lee?. 2010?. A Combined Calculus on Orientation with Composition Based on Geometric Properties?. ECAI 2010 – 19th European Conference on Artificial Intelligence, Lisbon, Portugal, August 16-20, 2010, Proceedings?. Frontiers in Artificial Intelligence and Applications?. vol. 215?. pages 1087-1088?. IOS Press?.