| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an opinion type estimation device which improves estimation accuracy of statistical information regarding an opinion type of utterance data.SOLUTION: An opinion type estimation device 2 includes: analysis object selection means 21 for selecting utterance data which becomes an analysis object; opinion type addition means 22 for adding an opinion type to the selected utterance data; mixture distribution model management means 23 for storing and managing the utterance data and a mixture distribution model in which a Gaussian distribution model for each opinion type is mixed; parameter optimization means 24 for estimating an optimum parameter by applying the utterance data to the mixture distribution model and using a numeric value optimization technique; and opinion type estimation means 25 for estimating a ratio of the opinion type by using the mixture distribution model in which the optimum parameter is estimated.</p> |
