Language analysis model learning apparatus, language analysis model learning method, language analysis model learning program, and recording medium thereof

摘要

PPROBLEM TO BE SOLVED: To provide a means capable of strictly determining an error estimation function in segment unit in estimation of a parameter vector with the same calculation amount as that of an approximate calculation method used in a conventional method. PSOLUTION: The language model learning device comprises a storage part which stores an output candidate graph in which an output label candidate showing a type of classification tag is associated with learning data 144, and an initial value of a parameter vector 145; and a parameter learning part 1413 which calculates a difference between the appearance probability of a correct answer element of the learning data 114 and the appearance probability of an element which is most likely to be output other than the correct answer element as an error estimation function, using a determination function which shows the appearance probability of a predetermined evaluation unit of the learning data 144 by a peripheral probability with the parameter vector 145 as a variable, and calculates the parameter vector 145 which optimizes an intended function set using the estimation function. PCOPYRIGHT: (C)2008,JPO&INPIT