QUERY ANSWERING DEVICE, QUERY ANSWERING METHOD, PROGRAM

摘要

PROBLEM TO BE SOLVED: To prevent search leakage which occurs due to difference of description expression between a query sentence and a search object sentence.SOLUTION: A reception part 111 of a query answering device 100 receives an inputted query sentence. An extraction part 113 extracts a search character string group type A including a noun phrase formed of two or more continuous nouns, as a search character string, and a search character string group type B including each of the two or more continuous nouns as the search character string, from the query sentence received at the reception part 111. A search part 120 searches for sentences including the respective search character string forming the search character string group type A or B extracted by the extraction part 113, as answering sentence candidates, from a search object document 131. An answering extraction part 140 extracts and outputs an answering to the query sentence from the answering sentence candidates searched by the search part 120.SELECTED DRAWING: Figure 1