Query expansion using fuzzy abductive inference for creative thinking support system

Proposes a query expansion method using fuzzy abductive inference for a creative thinking support system. This query expansion method for information retrieval is useful, because unexpected related information can probably be obtained by adding new words to the query. The fuzzy abductive inference is the inference method based on Peng and Reggia's (1990) abductive inference. This method infers nonredundant combinations of concept words for the query. This paper also studies how to update the weights of concept-term relationships by the steepest descent method.