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Method and apparatus for question and answer system to mine relevant questions

A question answering system and question sentence technology, applied in relational databases, special data processing applications, instruments, etc., can solve the problems of low accuracy and recall rate of the question answering system, low accuracy rate of returned answers, etc., and improve the ability to understand user intentions , reduce the amount of calculation, improve the effect of calculation efficiency

Active Publication Date: 2016-02-24
SHANGHAI XIAOI ROBOT TECH CO LTD
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Problems solved by technology

[0004] When the association rules obtained by the method of the prior art are used in the question answering system to calculate the answer returned to the user, the accuracy rate of the returned answer is low, in other words, the precision rate and recall rate of the question answering system are low

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  • Method and apparatus for question and answer system to mine relevant questions
  • Method and apparatus for question and answer system to mine relevant questions

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Embodiment Construction

[0040] As stated in the background technology, when the association rules obtained by the methods of the prior art are used in the question answering system to calculate the answers returned to the user, the accuracy of the returned answers is low, which makes the accuracy and recall of the question answering system relatively low. Low.

[0041] The inventors of the present application have found through research that in the prior art, the core words of user input questions are mostly determined by statistical features, such as word frequency, part of speech, positional relationship between words, and some artificially set grammatical rules. The extracted core words are associated question sequences mined by association rules, and the accuracy of the returned answers after participating in the calculation of the returned answers of the question answering system is low, which in turn affects the accuracy and recall of the question answering system.

[0042] In the technical sol...

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Abstract

The invention provides a method and an apparatus for a question and answer system to mine relevant questions. The method comprises: performing word segmentation on each question in a target question and answer interactive transaction in a knowledge base; extracting core words of each question in the target question and answer interactive transaction via dependence analysis; storing the core words of each question in the target question and answer interactive transaction in the knowledge base, and obtaining a target question transaction set of the knowledge base; and acquiring a relevant question sequence corresponding to core word strong association rules of each target question transaction set in the knowledge base. According to the invention, by using the relevant question sequence provided by the above scheme, a correct rate and a recall rate of the question and answer system can be improved.

Description

technical field [0001] The invention relates to the technical field of intelligent question answering, in particular to a method and device for mining associated question sentences in a question answering system. Background technique [0002] Association rule mining (Association rule mining) is one of the most active research methods in data mining, which can be used to find the connection between things. It was originally used to find the relationship between different commodities in the supermarket transaction database. [0003] At present, association rule mining is also applied in natural language-based question-and-answer interactive systems, in order to obtain the association relationship between questions, and then use the obtained association relationship between questions to calculate the answer returned to the user by the question-answering system. Accuracy and recall are technical indicators for evaluating automatic question answering systems. The accuracy rate r...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/27G06F17/30
CPCG06F16/284G06F40/216G06F40/211
Inventor 张昊朱频频
Owner SHANGHAI XIAOI ROBOT TECH CO LTD
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