Electric power heterogeneous knowledge fusion method based on D-S evidence theory

A kind of evidence theory and D-S technology, applied in the field of power knowledge fusion, can solve the problem of low delivery of heterogeneous knowledge fusion schemes, and achieve the effect of improving efficiency and effect

Pending Publication Date: 2022-03-01
STATE GRID JIANGSU ELECTRIC POWER CO LTD MARKETING SERVICE CENT
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Problems solved by technology

[0003] Most of the traditional knowledge fusion technologies are only aimed at the fusion of a single type of knowledge, and there are relatively few fusion solutions for heterogeneous knowledge.

Method used

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  • Electric power heterogeneous knowledge fusion method based on D-S evidence theory
  • Electric power heterogeneous knowledge fusion method based on D-S evidence theory
  • Electric power heterogeneous knowledge fusion method based on D-S evidence theory

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Embodiment Construction

[0084] The application will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present application.

[0085] Such as figure 1 Shown, a kind of method of the electric power heterogeneous knowledge fusion based on D-S evidence theory of the present invention, comprises the following steps:

[0086] Step 1: Obtain various types of knowledge of the electric power intelligent knowledge center, including ontology knowledge, triplet knowledge and event knowledge;

[0087] During the specific implementation, various types of knowledge of the electric power intelligent knowledge center are obtained, including ontology knowledge Onto_data, triple knowledge Triple_data, and event knowledge Event_data;

[0088] The ontology knowledge Onto_data={O 1 , O 2 ,...,O i ,...,O n}, where O i is the i-th ontolog...

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Abstract

The invention discloses an electric power heterogeneous knowledge fusion method based on a D-S evidence theory, and the method comprises the steps: obtaining various types of knowledge, including ontology knowledge, triple knowledge and event knowledge, of an electric power intelligent knowledge center; for a single input knowledge K, using BM25 to retrieve M optimal knowledge candidate sets from ontology knowledge, triple knowledge and event knowledge; respectively calculating the confidence of each knowledge in the knowledge candidate set; on the basis of the confidence coefficient, the fusion confidence coefficient of each piece of knowledge in the candidate set is calculated through fusion according to the D-S evidence theory; and sorting the fusion confidence, and screening to obtain knowledge most relevant to the query statement K. According to the method, on the basis of retrieval and text representation, the D-S evidence theory is utilized, the heterogeneous knowledge confidence degree results are subjected to fusion sorting, fusion of the heterogeneous knowledge is achieved, and the efficiency and effect of knowledge fusion are improved.

Description

technical field [0001] The invention belongs to the technical field of electric power knowledge fusion, and relates to a method for electric power heterogeneous knowledge fusion based on D-S evidence theory. Background technique [0002] Due to the complexity, openness, diversity, and huge scale of human knowledge, a large-scale commonsense knowledge base is needed to support human-like reasoning and natural language understanding. However, the knowledge sources in the knowledge map are extensive, and there will be duplication, semantic diversity, and uneven quality among multi-source and heterogeneous knowledge. It is necessary to perform operations such as conflict detection, entity disambiguation, and entity alignment. Knowledge is organically integrated to form a high-quality knowledge map. [0003] Most of the traditional knowledge fusion technologies are only aimed at the fusion of a single type of knowledge, and there are relatively few fusion solutions for heterogen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/36G06N5/02G06Q50/06
CPCG06F16/367G06N5/022G06Q50/06
Inventor 钱旭盛翟千惠康雨萌程雅梦吴伟将
Owner STATE GRID JIANGSU ELECTRIC POWER CO LTD MARKETING SERVICE CENT
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