| 摘要 |
PROBLEM TO BE SOLVED: To enable automatic estimation of candidates of factors relating to a request or a dissatisfaction, and also estimate a factor relating to a human relationship or a personal life event.SOLUTION: The factor estimation device is provided with: a subjective view detection unit 20 that performs document classification processing on inputted text data and gives, to classified each word group, a positive label indicating that the word group indicates a positive subjective view, or a negative label indicating that the word group indicates a negative subjective view; and a factor detection unit 30 that extracts, from a sentence, co-occurrence words that co-occur with the word group to which the positive label has been given or the word group to which the negative label has been given, and from a probability table constituted of the word groups that indicate the positive or negative subjective view, the word groups that indicate expression factors of the word groups indicating the subjective view, and numerical values that indicate expression probabilities of the word groups indicating the expression factors, extracts the word groups that include the extracted co-occurrence words, the word groups indicating the expression factors, the extracted word group that indicates the expression factors being selected in an order from the word group with higher expression probability and set as factor word groups. |
