A keyword expansion method, a system, the classification corpus notes method, and a system

Japanese Patent JP6231668

B2

This invention provides a keyword expansion method and system. The method comprises searching with a predetermined initial keyword to obtain current keywords used as a basis of a next search, performing loop search through keyword iteration; if a keyword error between keywords obtained in the current search and those keywords obtained in a previous search is less than a predetermined threshold, using the keywords obtained in the current search as expanded keywords of the initial keyword. With this method, the problem of manually establishing a thesaurus in the prior art may be solved. This method is a simple, accurate and efficient keyword expansion method. A method and system of automatically annotating a classified corpus is also provided. The method comprises: determining one or more initial core keywords for each class; obtaining expanded keywords for each class through expanding the initial core keywords; searching with the expanded keywords corresponding to a class to select a classified corpus and annotating the classified corpus.

Ye Mao
Turn gee
Shuige Embo
Ray Chao
Gin leaf on

JP2016518124A

November 15, 2017

December 05, 2013

Click for automatic bibliography generation  

Peking University Founder Group Company, Limited
Founder Apavi Technology Limited
Peking University

G06F17/30

JP2008077137A
JP2003058566A
JP2010286888A
JP2012234485A
JP2004029906A

US20020073079
US20070010804

河合 英紀、外4名,ブートストラップ式同位語辞書構築における検索効率の向上,情報処理学会論文誌 論文誌トランザクション 平成20年度(1) [CD-ROM],日本,社団法人情報処理学会,2009年 2月 4日,第1巻,第1号,pp.36-48

Atsushi Aoki
Jun Tsuruta
Tomohiro Minamiyama
Endo Riki
Tsuyoshi Miura

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