Automatically request-answering system and method

An automatic question answering and automatic answering technology, applied in the field of computational linguistics, can solve problems such as narrow coverage, low system accuracy and recall rate, and user experience damage

Active Publication Date: 2008-01-02
TENCENT TECH (SHENZHEN) CO LTD
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AI Technical Summary

Problems solved by technology

However, since the phenomenon of synonyms in Chinese is very common and the words are flexible and changeable, it is unacceptable to solve this problem by adding more question-answer sentence pairs, no matter from the perspective of workload or system efficiency
[0020] From the above examples, we can see that the simple pattern matching technology will lead to a huge workload of building a reasoning knowledge base, and the coverage is narrow. The accuracy rate and recall rate of the system are very low, which has caused great harm to the user experience.

Method used

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Embodiment Construction

[0061] Please refer to FIG. 1 , which is a system block diagram of the first embodiment of the present invention, which shows the components of an automatic question answering system and their interrelationships. This embodiment takes Chinese as the target language, of course, the system can also be used to establish automatic question answering systems in other languages.

[0062] The automatic question answering system includes a knowledge base subsystem 10 , a question answering subsystem 11 , and a reasoning knowledge base generation subsystem 12 .

[0063] The knowledge base subsystem 10 is a database for classifying and storing language knowledge and question-and-answer statement equivalence for the query of the question-answer subsystem 11 .

[0064] The question-and-answer subsystem 11 is used to receive user-input question sentences, search for answers corresponding to the user-input question sentences according to the user-input question sentences, and output the ans...

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Abstract

The invention discloses a kind of auto question-answering system, which includes interface unit, illation unit, language knowledge base, illation knowledge base, normalization table of keyword, and normalization unit, the illation unit inquires said illation knowledge base according to sequence of normalization to find the answer corresponding with the question with same sequence of keyword, and the answer is as the system response to be output by said interface unit. The invention also discloses a kind of auto question-answering method, which can be used in the system with language knowledge base, illation knowledge base, normalization table of keyword, and it can divide the input question; and the normalization is done for the sequence of keyword; and the normalized keyword can find the setting question with same keyword; and it can search the answer according to the question; and said answer is output as system response. Thee invention can reduce the working capacity for building illation knowledge base by the normalization of synonymous keywords.

Description

technical field [0001] The invention relates to computational linguistics, in particular to an automatic question answering system. The invention also provides an automatic question answering method and a method for updating the reasoning knowledge base of the automatic question answering system. Background technique [0002] The automatic question answering system, also known as QA (automatic Question Answering) system, uses natural language processing technology to complete the analysis and processing of user questions on the one hand and complete the generation of correct answers on the other hand. The automatic question answering system takes natural language understanding technology as the core, involves many disciplines such as computational linguistics, information science and artificial intelligence, and is one of the hot spots in computer application research. [0003] The technical indicators to measure the automatic question answering system mainly include the ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30G06F17/00
Inventor 杨海松
Owner TENCENT TECH (SHENZHEN) CO LTD
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