DIALOG ACT GRANTING MODEL LEARNING DEVICE, DIALOG ACT GRANTING DEVICE, METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To precisely grant a type of dialog act even to a speech including diverse and informal expression.SOLUTION: A speech analyzing part 11 performs morphemes analysis with a target speech sentence, and analyzes a category in a meaning system of each word. A feature amount extracting part 12 extracts, from a target speech sentence, character N-gram of various N which covers a specified percentage of the number of characters of a functional word as a feature amount. From a word train provided by abstracting a morphemes analysis result of the target speech sentence by using an analysis result of the category in a meaning system of each word, a word N-gram of various N that covers a predetermined percentage of the number of words in sentence end expression is extracted as a feature amount. A dialog act granting part 41 grants a type of dialog act to a target speech sentence by using a feature amount extracted from the target speech sentence and a dialog act granting model in which a type of dialog act learns, as learning data, a pair consisting of a type of each dialog act of a plurality of known learning speech sentences and a feature amount extracted from each of the plurality of learning speech sentences.