INFORMATION EXTRACTION DEVICE, INFORMATION EXTRACTION METHOD AND DIGITAL TELEVISION

摘要

PROBLEM TO BE SOLVED: To provide an information extraction means capable of acquiring intended extraction results like before a change of a setting criterion even when the setting criterion of an attribute imparted to an information element changes when designating the attribute imparted to the information element and performing information extraction.SOLUTION: A correlation degree designation means 104 calculates a correlation degree between attributes based on the information element included in a database 102, and designates it. A correlativity decision means 108 decides whether the correlation degree designated by the correlation degree designation means 104 is present in a range represented by a threshold designated by a threshold designation means 105. An information extraction means 109 extracts the information element having one of the attribute decided by the correlativity decision means 108 and the attribute designated by a user in an attribute designation means 107 from the database 102.