| 摘要 |
PROBLEM TO BE SOLVED: To create a summary in which, there is no shortage and excess of a content.SOLUTION: A sentence structure analysis part 30 acquires predicate term structures of plural sentences included in an input document as components. A sentence element equivalent determination part 32 determines equivalent of each pair of the acquired predicate term structures, determines the pair which is regarded to have equivalent as a same predicate term structure, and acquires a table indicating that which predicate term structure each sentence includes. A sentence selection part 34 selects at least one of respective sentences of the input document as a summary constitution sentence, so that, all predicate term structures are included at least one by one, and length becomes minimum, based on the table indicating that which predicate term structure each sentence includes. |
