Hitachi, Ltd.

Hitachi Touhoku Software, Ltd.

Tsutomu Fujinami

Hiroshi Tsuji

Kouji Inoue

Hirohide Haga

Kenzo Moriyama

Kenji Tozuka

Keiichiro Renge

A reasoning method capable of easily describing a model of diagnosis, a diagnosis method based on the reasoning method and a fault diagnosis system for performing efficiently faulty component diagnosis. Basic knowledge of a domain for which a knowledge base is used, expert's heuristic knowledge and meta-level knowledge for determining a scheme of use of the basic knowledge and the heuristic knowledge are provided. Fault diagnosis is performed for an objective of interest by executing a combination of reasoning based on the basic knowledge and reasoning based on the heuristic knowledge, in accordance with the meta-level knowledge.

Reasoning method and fault diagnosis method and system implementing the

A program data managing apparatus comprising memories for storing as program data a source code, technique data on a process for making the source code, and intention data on intention to make the source code; a link indicative of the mutual relationship between program data; a display for displaying the relationship between the program data using the link; a link provided to indicate the relationship between a newly developed source code and the original program data from which the new source code derives; and a display for displaying the source code developed stepwise by that link and the related program data.

Method of software development

Growing community of inventors

Kawasaki, Japan

Tsutomu Fujinami