Title:
同義語推定装置、同義語推定方法および同義語推定プログラム
Document Type and Number:
Japanese Patent JP5507620
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a synonym estimation device, a synonym estimation method, and a synonym estimation program, capable of more accurately specifying a synonym similar to a query required for retrieval.SOLUTION: A synonym estimation device 10 generates a plurality of functions that calculate a new feature value by performing a weighting operation on a plurality of feature values to learn weighting of the plurality of feature values and the new feature value, and weighting of a combined feature value of the functions, the weighting enabling character strings registered in learning data 30 to be determined in a descending order of similarity. The synonym estimation device 10 calculates a new feature value for a plurality of synonym candidates retrieved from a query by using a function obtained after learning from the plurality of feature values to specify a synonym similar to the inputted query on the basis of a calculation result obtained by calculating the plurality of feature values and the calculated new feature value with the learned weighting.
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Inventors:
Kei Utsumi
Application Number:
JP2012140466A
Publication Date:
May 28, 2014
Filing Date:
June 22, 2012
Export Citation:
Assignee:
Yahoo Japan Corporation
International Classes:
G06F17/30
Domestic Patent References:
| JP2011118526A | ||||
| JP2009223463A | ||||
| JP2012108570A |
Other References:
森本 康嗣,文脈類似度と表記類似度を用いた教師あり同義語抽出,言語処理学会第16回年次大会発表論文集,日本,言語処理学会,2010年 3月 8日,974-977ページ
Attorney, Agent or Firm:
Hiroaki Sakai