Question and answer method and apparatus based on knowledge map

一种知识图谱、文法的技术，应用在信息搜索领域，能够解决问答结果不准确等问题

Inactive Publication Date: 2018-07-10
ALIBABA (CHINA) CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] Embodiments of the present invention provide a question answering method and device based on knowledge graphs to overcome the problem of inaccurate question answering results

Method used

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  • Question and answer method and apparatus based on knowledge map
  • Question and answer method and apparatus based on knowledge map
  • Question and answer method and apparatus based on knowledge map

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Embodiment Construction

[0069] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0070] figure 1 Schematic diagram of the scene of the question answering method based on the knowledge map provided by the present invention. Such as figure 1 As shown, the terminal 10 may be a mobile phone, a computer, a tablet, or other user equipment installed with a browser. After the user inputs a natural query statement on the browser, th...

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Abstract

The present invention provides a question and answer method and apparatus based on a knowledge map. The method comprises: obtaining a natural query statement input by a user, and identifying globallyunique identifiers GUIDs of entities in the natural query statement for the knowledge map, wherein the knowledge map comprises attributes and attribute values of entities and the relationship betweenthe entities; according to the context-free grammar rule, parsing the natural query statement into a syntax tree, and obtaining a logical expression corresponding to the natural query statement according to the syntax tree; generating a machine query statement corresponding to the knowledge map according to the logical expression and the GUIDs of the entities; and according to the machine query statement, querying a question and answer result corresponding to the machine query statement in the knowledge map, and feeding back the question and answer result to the user. According to embodimentsof the present invention, an accurate question and answer result can be obtained for the question and answer.

Description

technical field [0001] The present invention relates to the technical field of information search, in particular to a question answering method and device based on a knowledge map. Background technique [0002] With the rapid development of information technology, today's society has entered the era of information explosion, and more and more people use the Internet to find the information they need. [0003] At present, using the question answering system to accurately obtain the information required by users has become an important way to obtain information. Most of the existing question answering systems extract the keywords in the user's questions as knowledge points, and perform one-to-one entity mapping in the database to find out the corresponding items of the knowledge points, and then feed back the corresponding items as answers to the users. [0004] However, the existing question answering system only establishes a one-to-one relationship mapping network, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F16/3329G06F16/3344G06F16/2452G06F16/24578G06F16/248G06F16/288G06F16/9535
Inventor 董良郏海峰华能威马华春葛灿辉
Owner ALIBABA (CHINA) CO LTD
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