Title:
EXPRESSION EXTRACTOR, EXPRESSION EXTRACTION METHOD, PROGRAM, AND RECORDING MEDIUM
Document Type and Number:
Japanese Patent JP3962382
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an expression extraction device which extracts evaluation expressions showing evaluations of an evaluation object, from a text to properly determine a polarity.
SOLUTION: The expression extraction device which extracts evaluation expressions from the text having descriptions on evaluations of a specific evaluation object is provided with; a registered expression storage part for registering an evaluation expression having a polarity predetermined, as a registered expression; an expression extraction part for extracting a plurality of evaluation expressions and a conjunction expression from the text; a registered expression detection part for detecting an evaluation expression including the registered expression registered in the registered expression storage part, out of the plurality of evaluation expressions; and a polarity determination part for determining that an evaluation expression which is in conjunction with the evaluation expression including the registered expression by a conjunction expression in a form of copulative conjunction and a series of evaluation expressions which are not in conjunction with the evaluation expression by a conjunction expression in any form of adversative/copulative conjunction and are not in conjunction with each other by a conjunction expression in any form of the adversative/copulative conjunction are of the same polarity as the registered expression.
Inventors:
Hiroshi Kanayama
Tetsuya Nasukawa
Tetsuya Nasukawa
Application Number:
JP2004045342A
Publication Date:
August 22, 2007
Filing Date:
February 20, 2004
Export Citation:
Assignee:
INTERNATIONAL BUSINESS MASCHINES CORPORATION
International Classes:
G06F17/27; G06F17/28; G06F7/00; (IPC1-7): G06F17/28
Domestic Patent References:
| JP2004157841A | ||||
| JP2004030177A | ||||
| JP2002140465A | ||||
| JP5324708A | ||||
| JP10027181A |
Other References:
立石健二他,インターネットからの評判情報検索,情報処理学会研究報告2001-NL-144,日本,社団法人情報処理学会,2001年 7月17日,Vol.2001,No.69,p.75-p.82
立石健二他,インターネットからの評判情報検索,電子情報通信学会技術研究報告書NLC2001,日本,社団法人電子情報通信学会,2001年 7月 9日,Vol.101、No.189,p.75-p.82
那須川哲哉他,コールセンターにおけるテキストマイニング,人工知能学会誌,日本,社団法人人工知能学会,2001年 3月 1日,Vol.16,No.2,p.219-p.225
立石健二他,インターネットからの評判情報検索,電子情報通信学会技術研究報告書NLC2001,日本,社団法人電子情報通信学会,2001年 7月 9日,Vol.101、No.189,p.75-p.82
那須川哲哉他,コールセンターにおけるテキストマイニング,人工知能学会誌,日本,社団法人人工知能学会,2001年 3月 1日,Vol.16,No.2,p.219-p.225
Attorney, Agent or Firm:
Hiroshi Sakaguchi
Yoshihiro City
Takeshi Ueno
Yoshihiro City
Takeshi Ueno
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