Knowledge-question matching method and device for intelligent question-answering system

A technology of intelligent question answering and matching method, applied in special data processing applications, instruments, electrical and digital data processing, etc., can solve problems such as low answer accuracy, inaccurate matching of questions and knowledge, and improve accuracy and weight similarity. Accurate and reduce the effect of calculation deviation

Active Publication Date: 2017-10-10
ZHONGKE DINGFU BEIJING TECH DEV
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Problems solved by technology

[0005] This application provides a knowledge-question matching method and device for an intelligent question answering system to solve the problem of inaccurate matching between questions and knowledge in the intelligent question answering system, resulting in low accuracy of the extracted answers

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Embodiment Construction

[0090] The following describes the present invention in detail, and the features and advantages of the present invention will become more clear and definite along with these descriptions.

[0091] The present invention is described in detail below.

[0092] According to the first aspect of the present application, a knowledge-question matching method of an intelligent question answering system is provided, such as figure 1 As shown, wherein, the method includes:

[0093] S101 obtains the question sent by the client;

[0094] S102 using the knowledge word and the question word to obtain the weight similarity between each piece of candidate knowledge and the question;

[0095] In this application, the knowledge word is the word segmentation result of the alternative knowledge; the question word is the word segmentation result of the question sent by the client.

[0096] S103 using knowledge words and question words to respectively obtain the vector similarity between each pie...

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Abstract

The invention discloses a knowledge-question matching method and device for an intelligent question-answering system. In the matching method, two similarity evaluation systems, namely the weight similarity evaluation system and the vector similarity evaluation system, are integrated so as to make up for system errors existing in a single similarity evaluation mode; moreover, according to the method and device, before the weight similarity and the vector similarity are calculated, word segmentation results are preprocessed, stop words in the word segmentation results are removed, and the unintended activation rate is reduced; besides, the weight of the knowledge words obtained after preprocessing is subjected to normalization, so that the threshold of the weight is equal to or larger than 0 and equal to or smaller than 1, the weight similarity calculating deviation caused by great weight difference due to different knowledge words is reduced, accordingly, the weights of the similarities of questions and alternative knowledge are more accurate, so that the accuracy of the total similarity is improved, and the knowledge-question matching accuracy of the intelligent question-answering system is further improved.

Description

technical field [0001] The present application relates to the technical field of natural language processing, in particular to a method and device for matching knowledge and questions of an intelligent question answering system. Background technique [0002] An intelligent question answering system is a system that enables customers to self-query answers to questions through human-computer interaction. It usually includes a client and a server connected to the network. The server is preset with a knowledge base and an answer base corresponding to the knowledge base. The knowledge in the knowledge base and The answers in the answer database are one-to-one correspondence, and the server matches the knowledge in the preset knowledge base according to the text of the question obtained from the client, and then returns the answer corresponding to the knowledge to the client to answer the client's question. [0003] There are usually two methods for matching question text and pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F16/3329G06F16/3334G06F16/334
Inventor 陈飞崔培君乔思龙王萌萌
Owner ZHONGKE DINGFU BEIJING TECH DEV
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