Schema Knowledge Structures for Representing and Understanding Arithmetic Story Problems.
Technical rept. 1 Sep 85-1 Sep 86,
SAN DIEGO STATE UNIV CA DEPT OF PSYCHOLOGY
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The research described in this report is part of a three-stage project in the domain of arithmetic story problems. The three stages are 1 definition and explication of schema knowledge, 2 development and evaluation of an instructional system designed to teach schema knowledge, and 3 computer simulation of the acquisition and use of schema knowledge structures. This document focuses on the first stage only and explicates three aspects of our research. First, the domain itself is analyzed with respect to the conceptual relations that may appear in story problems. Emphasis is upon the underlying semantic structure that gives meaning to each problem. Second, each semantic structure is framed as a hypothetical memory object i.e., a schema, and the relationship to accepted theories of memory is explored. Third, a computer model is presented that details the linkage of schema knowledge to two basic components of long-term memory semantic networks of declarative memory and production systems of procedural memory. Keywords Problem solving Knowledge representation. Author
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