Chizuko Yasunobu

Document retrieval expert system shell with worksheet-based knowledge acquisition facility

ESOCKS, a domain shell for intelligent document retrieval is described. An important feature of ESOCKS is its associative retrieval capability. ESOCKS associates input keywords with other keywords and utilizes the augmented keywords to retrieve documents. Keyword association prevents users from missing suitable documents. The certainty factor attached to each retrieved document enables the user to select suitable documents from certain candidates. Another important feature of ESOCKS is its knowledge acquisition facility, using eight kinds of worksheet. For experts, developing an expert system consists of extracting knowledge according to the format and entering it in worksheets. Experience with ESOCKS indicates that an unassisted expert can built an expert system and that associative retrieval is more intelligent than conventional keyword retrieval.<<ETX>>

A Decision Support System Building Tool with Fuzzy Logic and Its Application to Chart Technical Analysis

Abstract Financial decision support systems (DSS), including securities trading support systems or asset liability management systems, have become more intelligent and sophisticated due to the progress of information processing technology, particularly in areas of artificial intelligence (AI). Knowledge acquisition often bottlenecks during the building of intelligent DSS (IDSS) based on AI techniques. This paper describes a DSS building tool with fuzzy logic builtin, which supports knowledge acquisition functions using human-machine interaction and various simulation functions. This building tool consists of the following functions; (1) Fuzzy reasoning, (2) User-friendly fuzzy rule editor, (3) Time-series data handling, including chart graphics, (4) and Simulation and rule evaluation. We applied this tool to build a chart technical analysis support system. This system stores technical analysis know-how in the fuzzy knowledge base, provides various types of information, and helps decision makers make more informed decisions and acquire new knowledge. The effectiveness of knowledge acquisition using this tool has been demonstrated through its application.