VOCABULARY PREDICTION METHOD, VOICE RECOGNITION METHOD, VOCABULARY PREDICTION EQUIPMENT, VOICE RECOGNITION EQUIPMENT, COMPUTER SYSTEM, MEMORY MEDIUM AND PROGRAM TRASMITTING EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide a vocabulary prediction method which can raise the accu racy of prediction. SOLUTION: Using string of a partial parse tree covering the word string to the time in each step of word prospect, the partial parse tree having a useful information is selected by the prospect of the next word. In other word, the accuracy of the prospect is improved by selecting the most useful word and/or word string for the prospect of the next word based upon the relation structure and the word string to be a history. Specifying the partial parse tree relating to a word to be prospected, thereafter, the next word is prospected from the partial parse tree, that is, the word and/or word string estimated to be a relation having the connection with the word of prospective object.