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Teaching field question-answering method based on knowledge graph

A knowledge graph and domain technology, applied in structured data retrieval, semantic analysis, instruments, etc., can solve problems such as insufficient use of knowledge base information, inability to map predicate relationships, and difficulty in semantic parsing vocabulary mapping, so as to improve school efficiency and ensure The effect of accuracy

Active Publication Date: 2020-05-12
重庆和贯科技有限公司
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Problems solved by technology

[0004] At present, the application of question and answer in the field of smart education based on knowledge graphs often uses traditional methods. These methods use semantic analysis to make insufficient use of the information in the knowledge base, and only focus on the problem.
In addition, vocabulary mapping in semantic parsing is also relatively difficult, and the predicate relationship in natural language cannot be effectively mapped to the entity relationship in the knowledge base only through simple statistical methods

Method used

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  • Teaching field question-answering method based on knowledge graph
  • Teaching field question-answering method based on knowledge graph

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Embodiment Construction

[0026] The present invention will be further explained below in conjunction with the accompanying drawings of the specification, as shown in the figure:

[0027] The question and answer method in the teaching field based on the knowledge graph of the present invention includes the following steps:

[0028] S1. Get the problem and determine the subject words in the problem;

[0029] S2. Find the entity node corresponding to the subject word according to the subject word, and determine the candidate mapping path of the entity node;

[0030] S3. Use the priority queue to perform a heuristic search for candidate mapping paths to generate the semantic logical form corresponding to the problem;

[0031] S4. Convert the semantic logic form into lambda expressions for answer query, and get the answer to the question;

[0032] S5. Obtain the user's evaluation satisfaction of the answer and the answer query processing time, and construct an answer update model to update the answer.

[0033] In this...

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Abstract

The invention discloses a teaching field question-answering method based on a knowledge graph. The method comprises the following steps: S1, determining a subject term in a question; S2, searching anentity node corresponding to the subject term according to the subject term, and determining a candidate mapping path of the entity node; S3, generating a semantic logic form corresponding to the question; S4, performing answer query to obtain an answer to the question; and S5, constructing an answer updating model to update the answer. According to the teaching field question-answering method based on the knowledge graph, efficient and accurate answer query can be carried out on questions raised by a user, and the learning efficiency of the user is improved.

Description

Technical field [0001] The invention relates to the field of knowledge graphs, in particular to a question and answer method in the teaching field based on the knowledge graphs. Background technique [0002] Wisdom education has become a new hot spot in the current education field. my country's smart education research mainly centers on the technical support and theoretical discussion of smart education, the macro and micro two main lines of smart education development and the research of smart learning needs, the research of smart education theory in the new context, the research of smart campus ecology, the research of smart teaching models, Smart education technology supports environmental research, etc. In the future, it will mainly focus on research on the application of smart education theory to practice, research on the supporting environment of key technologies for smart education, research on the development and application of smart learning resources and smart teaching ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/332G06F40/30G06F16/35G06F16/36G06F16/23G06F16/28
CPCG06F16/3329G06F16/35G06F16/367G06F16/23G06F16/288Y02D10/00
Inventor 刘兵田佳雯
Owner 重庆和贯科技有限公司
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