LANGUAGE MODEL UPDATING DEVICE, LANGUAGE MODEL UPDATING METHOD, AND LANGUAGE MODEL UPDATING PROGRAM

摘要

Provided is a language model updating device having a frame, in which words in a language model are set with numerical values indicating their individual statistical appearance tendencies not only as constants but also as time-varying updating functions, and in which the numerical values indicating the automatically set statistical appearance tendencies of the words are updated as the time elapses. The language model updating device comprises a time information inputting unit (50) for accepting the lapse time or date information from a preset instant, an update target/function storage unit (20) for holding a word of the update target or a condition of the word of the update target, and the updating function in combination, and a language model updating unit (40) for updating, according to the lapse of the time received by the time information inputting means, the language model of the word of the update target or the word set satisfying the condition of the word of the update target, in accordance with the updating function paired with each update target.