Title:
WORD CLASSIFICATION PROCESSING METHOD AND DEVICE THEREFOR, AND VOICE RECOGNIZER
Document Type and Number:
Japanese Patent JP3043625
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a word classification result having a well-balanced hierarchical structure by classifying plural words into plural classes in the form of a binary tree having hierachized lower, intermediate and upper layers.
SOLUTION: The word classification processing part 20 classifies the words included in the text data stored in a text data memory 10 by assigning the words of comparatively low appearance frequency and the words of high rates to be adjacent to the same word in the same classes respectively. Then, the part 20 classes the word classification result into the intermediate, upper and lower layers. Then, the words are classified in order of intermediate, upper and lower layers and based on the prescribed average mutual information content, i.e., a global (overall) cost function set for all words included in the text data. The classified words are stored in a word dictionary memory 11 in the form of a word dictionary. In such word classification processing, it is possible to obtain the word classification result that has a well-balanced hierarchical structure and also is globally optimized.
Inventors:
Akira Shiota
Hitoshi Iida
Hitoshi Iida
Application Number:
JP19895096A
Publication Date:
May 22, 2000
Filing Date:
July 29, 1996
Export Citation:
Assignee:
ATR Voice Translation Research Institute
International Classes:
G06F17/27; G06F17/28; G10L15/18; G10L15/183; (IPC1-7): G06F17/28; G10L15/18
Domestic Patent References:
| JP3131967A | ||||
| JP3111972A | ||||
| JP63172372A |
Other References:
柏岡秀紀他、“７Ｇ−５ 相互情報量を用いた単語の分類における出現頻度の低い単語の処理方法”、情報処理学会第４９回（平成６年度後期）全国大会講演論文集（３）、平成６年９月２８日〜３０日、ｐ．３−１８５〜３−１８６
Attorney, Agent or Firm:
Aoyama Ryo (2 outside people)
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