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Method for calculating problem similarity with answer relevance ranking evaluation measurement

A correlation sorting and similarity technology, applied in computing, special data processing applications, instruments, etc., can solve problems that do not take into account answer information, difficult problems, etc., to achieve the effect of improving user experience, improving accuracy and comprehensiveness

Active Publication Date: 2016-08-24
EAST CHINA NORMAL UNIVERSITY
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  • Description
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Problems solved by technology

However, most of the above are based on word matching or shallow semantic analysis between questions to retrieve similar questions, without taking into account the answer information related to the question, so it is difficult to solve the actual problem of using different natural language expressions for the same question. Happening

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  • Method for calculating problem similarity with answer relevance ranking evaluation measurement
  • Method for calculating problem similarity with answer relevance ranking evaluation measurement
  • Method for calculating problem similarity with answer relevance ranking evaluation measurement

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Embodiment Construction

[0029] The present invention will be further described in detail in conjunction with the following specific embodiments and accompanying drawings. The process, conditions, experimental methods, etc. for implementing the present invention, except for the content specifically mentioned below, are common knowledge and common knowledge in this field, and the present invention has no special limitation content.

[0030] The definitions of the technical terms involved in the present invention are as follows:

[0031] Community question answering (community question answering): on the one hand, users can ask questions on any topic, and these questions are answered by users or experts with relevant knowledge on the community question answering website; on the other hand, the community question answering system searches for relevant questions for user questions And return the answer to the related question as an answer to the user's question.

[0032] Question retrieval: Enter a query...

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Abstract

The invention discloses a method for calculating problem similarity with answer relevance ranking evaluation measurement. The method includes the steps that 1, an answer ranking model is learned on a training data set in a question and answer knowledge base; 2, quick information retrieval is used for retrieving related problems of a user problem from the question and answer knowledge base; 3, the same candidate answer set of the user problem and the related problems is ranked according to the learned answer ranking model; 4, question-answer relevance ranking evaluation measurement namely Spearman, Pearson and Kendall relevance coefficients are calculated; 5, the obtained relevance coefficients directly serve as similarity scores of the problems or are added into a similarity characteristic set to train a classifier, and then probability confidence scores output by the classifier serve as the similarity score. The problem similarity is calculated through answer similarity, and the problem that the same problem has wide vocabulary gaps caused by different natural language expressions is solved.

Description

technical field [0001] The invention relates to a question retrieval technology in a community question answering (CQA) system, and relates to a method for calculating the similarity of retrieval questions by using an evaluation measure of question-answer correlation ranking. Background technique [0002] In recent years, with the vigorous development of Community-based Question Answering (CQA) websites, such as Yahoo Answers, Wiki Answers, Baidu Zhizhi, Soso Asking, etc., more and more research institutions and researchers have begun to pay attention to this a field. On the one hand, users can ask various questions, which are answered by knowledgeable users or experts on community Q&A sites. On the other hand, for the query question raised by the user (denoted as Q 0 ), the CQA system retrieves the existing question-and-answer knowledge base to find out related questions with existing answers (denoted as Q 1 ), and return the answer to the related question (denoted as A)...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/90332
Inventor 兰曼吴国顺
Owner EAST CHINA NORMAL UNIVERSITY
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