| 摘要 |
PROBLEM TO BE SOLVED: To predict an objective evaluation value based on subjective evaluation about a target content whose evaluation value is predicted without receiving the influence of the format or size or the like of the target content.SOLUTION: A featured value generation section 41 for learning generates a feature vector for learning by summarizing social features showing the structure of a summary content including a target content, an operation of a user to the summary content and a relation between whole summary contents included in a plurality of learning data items and the target content and text features to be extracted from text information owned by the summary content, extracted from learning data by a feature extraction section 20, and a parameter determination section 42 determines a regression parameter corresponding to a regression method of a prediction section 30 by using the feature vector for learning, and stores it in a regression parameter storage section 31. A prediction evaluation value regression section 32 calculates the prediction evaluation value of a test target content by using a test feature vector extracted about the test target content and the regression parameter. |
