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My research investigates the role of experience and goals in focusing learning in complex domains. The ability to perform successfully in such domains depends on being able to recognize the need to learn and to select appropriate strategies for obtaining needed information.
I am studying this goal-driven learning process in the context of computer programs whose search for information is guided by reasoning about current information needs and by their prior experience--both successes and failures--dealing with similar situations. The process that these programs use to apply their experience is case-based reasoning. Case-based reasoning systems maintain a memory of prior episodes and solve new problems by retrieving and adapting the solutions from those episodes. This process allows reuse of prior solutions while maintaining the flexibility to respond to changes in circumstances. I am investigating how goals direct the case-based reasoning process for both external and introspective learning.
Bold student names indicate a cognitive science standalone student.
|Bauer, T. L.||Wordsieve: Context Analysis For Personal Informational Retrieval (May 2003)||Leake, D. (Chair), Bramley, R., Gasser, M., Mostafa, J.|
|Ekbia, H. R.||AI Dreams and Discourse: Science and Engineering in Tension (August 2003)||Hofstadter, D. R. (Co-Chair), Kling, R., Leake, D. B., Lloyd, E. A., Smith, B. C. (Co-Chair)|
|Chui, M.||I still Haven't Found What I'm Looking For: Web Searching As Query Refinement (January 2002)||Dillon, A. (Co-Chair), Leake, D. B. (Co-Chair), Dunn, J. M., Peebles, C. S.|
|Wagner, K.||Simulation Models of Evolution: Communication And Cooperation (August 2000)||Gasser, M. (Chair), Leake, D., Port, R., Timberlake, W.|
|Diller, D. E.||The Effects of Attentional Focus on Visual Information Processing (October 1999)||Shiffrin, R. (Co-Chair), Kruschke, J. (Co-Chair), Busey, T. A., Leake, D. B.|
|Marshall, J. B.||Metacat: A Self-Watching Cognitive Architecture For Analogy-Making And High-Level Perception (November 1999)||Hofstadter, D. (Co-Chair), Friedman, D. (Co-Chair), Leake, D. B., Port, R. F.|
|Wang, P.||Non-Axiomatic Reasoning System - Exploring the Essence of Intelligence (August 1995)||Hofstadter, D. (Chair), Townsend, J. T., Rawlins, G. J. E., Leake, D. B.|
|Harris, Jack||Automated Cognitive Model Evaluation: Methodologies And Uses (December 2011)||Schuetz, M. (Chair), Bertenthal, B., Busemeyer, J., Leake, D.|
|Schrementi, Giancarlo||Language in the Balance: Factors in the Emergence of Compositional Communication (June 2011)||Gasser, M. (Co-Chair), Leake, D. (Co-Chair), Yaeger, L., Yu, C.|
|Mahabal, Abhijit||Seqsee: A Concept-Centered Architecture for Sequence Perception (March 2010)||Hofstadter, D. (Chair), Gasser, M., Goldstone, R., Leake, D.|
|Lara-Dammer, Francisco||Modeling Human Discoverativity in Geometry (December 2009)||Hofstadter, D. (Chair), Gasser, M., Leake, D., Moss, L., Port, R.|
|Shayan, Shakila||Emergence of Roles in English Canonical Transitive Construction (June 2008)||Gasser, M. (Co-Chair), Gershkoff-Stowe, L. (Co-Chair), Leake, D., Goldstone, R., Smith, L.|
|Foundalis, Harry E.||Phaeaco: A Cognitive Architecture Inspired by Bongard’s Problems (May 2006)||Hofstadter, D. (Chair), Gasser, M., Goldstone, R., Leake, D.|
|Lee, Seunghwan||Probabilistic Reasoning on Metric Spaces (August 2006)||Moss, L. (Chair), Bradley, R., Leake, D., Van Gucht, D.|
|Scherle, Ryan||Looking for a Haystack: Selecting Data Sources in a Distributed Retrieval System (November 2006)||Leake, D. (Co-Chair), Gasser, M. (Co-Chair), Mostafa, J., Rawlins, G.|