Intelligent Chinese request-answering system based on concept

A question answering system, Chinese technology, applied in the field of concept-based question answering and retrieval system, can solve the problem of unformed Chinese natural language question answering system, etc., to achieve the effect of improving precision, high precision, and improving recall

Inactive Publication Date: 2008-10-15
HUAZHONG UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

But on the whole, there are relatively few scientific research institutions involved in the research of Chinese automatic question answering technology, and there is basically no Chinese natural language question answering system

Method used

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  • Intelligent Chinese request-answering system based on concept
  • Intelligent Chinese request-answering system based on concept
  • Intelligent Chinese request-answering system based on concept

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings and examples.

[0025] like figure 1 As shown, the concept-based intelligent Chinese question answering system provided by the present invention includes a data server 100, an input module 200, a question preprocessing module 300, a candidate question set extraction module 400, a question sentence similarity calculation module 500 and a display module 600.

[0026] The data server 100 is used to store corpus, index library, XML document and question library, provide knowledge and rule support for the question preprocessing module 300 , and provide index and retrieval objects for the candidate question set extraction module 400 .

[0027] The input module 200 is used to receive the questions input by the user, check the normativeness of the input questions, and ensure that the questions in the correct format can be submitted to the question preprocessing module 3...

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Abstract

The invention discloses a Chinese question answering system based on concept, which mainly comprises a data server, a question pre-treatment module, a candidate question set extracting module and a question sentence similarity calculation module. The invention aims at providing a question answering system which is based on concept, can carry out synonym expansion of keywords which are processed by question sentences which are input by the user, understand question sentences better, carry out searching and improve the recall ratio of the question answering system. Furthermore, the system has a Chinese sentence similarity calculation method based on concept from three aspects: word form, word order and word length, and improves searching precision ratio. Meanwhile, the system adopts a high-efficiency retrieval technology to realize rapid extraction of candidate question set, calculates question sentence similarity, sorts question set quickly and returns the sorted questions and answers to the user. The question answering system of the invention gives more precise understanding in concept to the question sentences input by the user and searches the accurate answers. Experiments show that the question answering system of the invention achieves high recall ratio and precision ratio.

Description

technical field [0001] The invention belongs to information retrieval technology, specifically a concept-based question-and-answer retrieval system. The question answering system is an improvement to the information retrieval system, and it is an advanced form of information retrieval. It can answer users' questions in natural language with precise and concise language. Background technique [0002] In the 21st century, people have officially entered the information age, and the demand for network information is increasing day by day. However, the inherent large capacity, heterogeneity, distribution and dynamics of the network, as well as a large amount of invalid data lacking organization in the Web, reduce the efficiency of people's utilization of rich information resources, and the phenomenon of "information overload" appears. In recent years, with the rapid development of network and information technology, people's desire to obtain information faster has promoted the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 张茂元邹春燕杨付全卢正鼎赵冰心余毅刘明
Owner HUAZHONG UNIV OF SCI & TECH
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