MANAGING DOCUMENTS IN QUESTION ANSWERING SYSTEMS
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Abstract
A first candidate answer to a time-sensitive question received by a question answering (QA) system is identified using a first document. A first temporal confidence subscore of the first candidate answer is then calculated using a first temporal confidence rule. A first general confidence score is then generated based on at least the first temporal confidence subscore. A second candidate answer to the question is identified using a second document. A second temporal confidence subscore of the second candidate answer is then calculated using a second temporal confidence rule. A second general confidence score is then generated based on at least the second temporal confidence subscore. The first general confidence score and the second general confidence score are then compared. Based on this comparison, a final answer is selected from the first candidate answer and the second candidate answer.
28 Citations
20 Claims
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1-11. -11. (canceled)
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12. A system for answering a time-sensitive question, the time-sensitive question having a question time frame, the system comprising:
a computer configured to; receive the time-sensitive question; identify a first candidate answer to the time-sensitive question with a first document, the first document having a first base time and a first information type, the first information type being associated with a first temporal confidence rule; calculate a first temporal confidence subscore of the first candidate answer by applying the first temporal confidence rule to the first base time and the question time frame; generate a first general confidence score of the first candidate answer, the first general confidence score being based on at least the first temporal confidence subscore; identify a second candidate answer to the time-sensitive question with a second document, the second document having a second base time and a second information type, the second information type being associated with a second temporal confidence rule; calculate a second temporal confidence subscore of the second candidate answer by applying the second temporal confidence rule to the second base time and the question time frame; generate a second general confidence score of the second candidate answer, the second general confidence score being based on at least the second temporal confidence subscore; compare the first general confidence score and the second general confidence score; and select a final answer from the first candidate answer and the second candidate answer based on the comparison of the general confidence scores. - View Dependent Claims (13, 14, 15)
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16. A computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a computer to cause the computer to perform a method comprising:
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receiving a time-sensitive question; identifying a first candidate answer to the time-sensitive question with a first document; calculating a first temporal confidence subscore of the first candidate answer with a first temporal confidence rule; generating a first general confidence score of the first candidate answer, the first general confidence score being based on at least the first temporal confidence subscore; identifying a second candidate answer to the time-sensitive question with a second document; calculating a second temporal confidence subscore of the second candidate answer with a second temporal confidence rule; generating a second general confidence score of the second candidate answer, the second general confidence score being based on at least the second temporal confidence subscore; comparing the first general confidence score and the second general confidence score; and selecting a final answer from the first candidate answer and the second candidate answer based on the comparison of the general confidence scores. - View Dependent Claims (17, 18, 19, 20)
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Specification