Presentation 1994/9/9
Implementing a hypothetical reasoning tool on a powersystem database
Fumihisa Ogasawara, Osamu Segawa, Teru Wakabayashi, Yoshitaka Hiyama, Yoshihiko Yoshimura, Naoko Ishibe, Kazunori Matsumoto,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Hypothetical reasoning can handle incomplete knowledge as hypothesis.And then,it is applicable for various kinds of practical problems.We apply it for a powersystem database to infer how the electricity is supplied for each electric line making unknown state of switches as hypotheses. The main part of this papers presents the implementation of the ATMS(Assumption Based Truth Maintenance System)on the object- oriented powersystem database.Although the ATMS is an efficient and successful hypothetical reasoning tool,it has crucial problem of exponential growth the computation time as increase the hypothesis size.To escape this problem,we divide the powersystem into some subsystems,and then a local ATMS runs on such a subsystem.thus the size of the subsystem is relatively small,the local ATMS finishes the computation in reasonable time.Finally, they communicate with each other to get global inference result.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Hypothetical reasoning / ATMS / database / powersystem
Paper # DE94-62
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Committee DE
Conference Date 1994/9/9(1days)
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Registration To Data Engineering (DE)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Implementing a hypothetical reasoning tool on a powersystem database
Sub Title (in English)
Keyword(1) Hypothetical reasoning
Keyword(2) ATMS
Keyword(3) database
Keyword(4) powersystem
1st Author's Name Fumihisa Ogasawara
1st Author's Affiliation Chubu Electric Power Co.Inc.()
2nd Author's Name Osamu Segawa
2nd Author's Affiliation Chubu Electric Power Co.Inc.
3rd Author's Name Teru Wakabayashi
3rd Author's Affiliation Fujitsu Ltd.
4th Author's Name Yoshitaka Hiyama
4th Author's Affiliation Fujitsu Ltd.
5th Author's Name Yoshihiko Yoshimura
5th Author's Affiliation Toshiba Corp.
6th Author's Name Naoko Ishibe
6th Author's Affiliation Toshiba Corp.
7th Author's Name Kazunori Matsumoto
7th Author's Affiliation Toshiba Corp.
Date 1994/9/9
Paper # DE94-62
Volume (vol) vol.94
Number (no) 224
Page pp.pp.-
#Pages 8
Date of Issue