| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus and a method for answering a question, an apparatus and a method for generating rewording and dependency, and a program thereof, capable of searching for an answer from documents even having different expression from the expression in a question text. SOLUTION: The question answering apparatus includes a question text dependency analysis means for analyzing the dependency in the question text, and extracting the question text dependency; a document text dependency analysis means for analyzing the dependency in each document text of the document, and extracting the document text dependency in each document text; a rewording and dependency generation means for generating reworded text dependency of the question text and/or the document text, using component words constituting the question text and/or the document text; a matching search means for comparing for a match each the document text dependency and the reworded text dependency thereof with the question text dependency and the reworded text dependency thereof, and searching for a word corresponding to a term of an interrogative in the question text dependency and the reworded text dependency thereof from the above each matched document text dependency and the reworded text dependency thereof; and an answer output means for outputting the searched word as answer information. COPYRIGHT: (C)2006,JPO&NCIPI
|
