Question answering system, data search method, and computer program
First Claim
1. A question answering system comprising:
- a question input unit that is input to a question;
a search unit that executes search processing on a basis of the input question;
an anaphoric analysis unit that executes anaphoric analysis processing on a search result of the search unit;
an information extraction unit that extracts sentences, which include expressions having a reference relation therebetween, as reference relation sentences, the reference relation determined by finding relation in an expressions of at least one of a noun phrase, a pronoun, and a zero pronoun between sentences in the search result on a basis of a result of the anaphoric analysis executed by the anaphoric analysis unit, the information extraction unit that selects a first candidate sentence from a passage obtained as the search result and selects a second candidate sentence, which is the reference relation sentence of the first candidate sentence; and
an answer candidate extraction unit that extracts an answer candidate from the first and second candidate sentences selected by the information extraction unit.
1 Assignment
0 Petitions
Accused Products
Abstract
A question answering system includes a question input unit input to a question, a search unit, an anaphoric analysis unit, an information extraction unit and an answer candidate extraction unit. The search unit executes search processing based on the input question. The anaphoric analysis unit executes anaphoric analysis processing on a search result. The information extraction unit extracts sentences, which include expressions having a reference relation therebetween, as reference relation sentences, the reference relation determined by finding relation in an expressions of at least one of a noun phrase, a pronoun, and a zero pronoun between sentences in the search result on a basis of a result of the anaphoric analysis; selects a first candidate sentence from a passage obtained as the search result; and selects a second candidate sentence, which is the reference relation sentence of the first candidate sentence. The answer candidate extraction unit extracts an answer candidate.
72 Citations
15 Claims
-
1. A question answering system comprising:
-
a question input unit that is input to a question;
a search unit that executes search processing on a basis of the input question;
an anaphoric analysis unit that executes anaphoric analysis processing on a search result of the search unit;
an information extraction unit that extracts sentences, which include expressions having a reference relation therebetween, as reference relation sentences, the reference relation determined by finding relation in an expressions of at least one of a noun phrase, a pronoun, and a zero pronoun between sentences in the search result on a basis of a result of the anaphoric analysis executed by the anaphoric analysis unit, the information extraction unit that selects a first candidate sentence from a passage obtained as the search result and selects a second candidate sentence, which is the reference relation sentence of the first candidate sentence; and
an answer candidate extraction unit that extracts an answer candidate from the first and second candidate sentences selected by the information extraction unit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A data search method comprising:
-
inputting a question;
executing search processing on a basis of the input question;
executing anaphoric analysis processing on a search result of the search unit;
extracting sentences, which include expressions having a reference relation therebetween, as reference relation sentences, the reference relation determined by finding relation in an expressions of at least one of a noun phrase, a pronoun, and a zero pronoun between sentences in the search result on a basis of a result of the anaphoric analysis;
selecting a first candidate sentence from a passage obtained as the search result;
selecting a second candidate sentence, which is the reference relation sentence of the first candidate sentence; and
extracting an answer candidate from the first and second candidate sentences selected. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. A computer program stored in a storage medium, the computer program causing a computer to execute data search processing comprising:
-
inputting a question;
executing search processing on a basis of the input question;
executing anaphoric analysis processing on a search result of the search unit;
extracting sentences, which include expressions having a reference relation therebetween, as reference relation sentences, the reference relation determined by finding relation in an expressions of at least one of a noun phrase, a pronoun, and a zero pronoun between sentences in the search result on a basis of a result of the anaphoric analysis;
selecting a first candidate sentence from a passage obtained as the search result;
selecting a second candidate sentence, which is the reference relation sentence of the first candidate sentence; and
extracting an answer candidate from the first and second candidate sentences selected.
-
Specification