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Object root type design method and system based on domain knowledge graph ontology

A technology of domain knowledge and design method, applied in the object root type design method and system field, can solve problems such as classification, domain knowledge expression defects, inability to fully express text, video picture knowledge and association, etc.

Active Publication Date: 2019-11-22
广州拓尔思大数据有限公司
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Problems solved by technology

[0009] The classification of object root types is the basic work of building domain knowledge graphs. However, the existing popular general knowledge graphs are not classified according to the characteristics of domain data. The only root type is entity, which brings defects to the expression of domain knowledge and cannot be fully expressed. Such as text, video pictures and other knowledge and associations

Method used

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  • Object root type design method and system based on domain knowledge graph ontology
  • Object root type design method and system based on domain knowledge graph ontology
  • Object root type design method and system based on domain knowledge graph ontology

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Embodiment

[0056] There are generally two approaches to modeling domain knowledge graph construction: top-down and bottom-up:

[0057] The top-down approach means that when constructing a domain knowledge map, the data schema, that is, the ontology, is first defined, which is generally compiled manually by domain experts; the definition starts from the top-level concept, and then gradually refines to form a well-structured classification hierarchy; The top-down method is mostly used in the ontology construction of domain knowledge graphs. This is because: on the one hand, compared with open domain knowledge graphs, the concepts and scope involved in domain knowledge graphs are fixed or controllable; on the other hand, for domain knowledge graphs Atlas, it is required to meet higher precision.

[0058] The bottom-up method is the opposite. First, the existing entities are summarized and organized to form the underlying concept, and then gradually abstracted to form the upper-level concept...

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Abstract

The invention discloses an object root type design method and system based on a domain knowledge graph ontology, and the method comprises the steps: carrying out the type classification of obtained data, and obtaining structured data, semi-structured data and unstructured data; performing object construction on the structured data, the semi-structured data and the non-structured data in sequence based on the domain knowledge graph to obtain an entity object, an event object, a text object and a multimedia object; converting the entity object, the event object, the text object and the multimedia object into an entity type, an event type, a text type and a multimedia type according to the object root type; and sequentially performing knowledge processing on the text type and the multimedia type to convert into an entity type and an event type, and obtaining a conversion processing result. In the embodiment of the invention, the event type, the text type and the multimedia type are addedand extended to knowledge of the classification expression field, so that various typical field scenes can be better described.

Description

technical field [0001] The present invention relates to the technical field of data processing, in particular to a method and system for designing object root types based on domain knowledge map ontology. Background technique [0002] Knowledge Graph (KG) aims to describe the concepts, entities, events and the relationship between them in the objective world; the essence of knowledge graph is a knowledge base with directed graph structure, which is an indispensable basic resource for artificial intelligence applications; The basis of knowledge graph construction is to establish the data model of knowledge graph, which means to express knowledge, also known as knowledge modeling or knowledge system construction. In essence, it is to build an ontology model to describe knowledge; Ontology source From Western philosophy, it is used to describe the objective existence in the world; the more popular concept of ontology was proposed by Gruber, a well-known scholar at Stanford Univ...

Claims

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Application Information

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IPC IPC(8): G06F16/36
CPCG06F16/367
Inventor 王亚强李春保吴庆蓉
Owner 广州拓尔思大数据有限公司
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