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Method for automatically expanding layering ontology knowledge base

A hierarchical ontology library technology, applied in database models, relational databases, structured data retrieval, etc., can solve problems such as inability to achieve dynamic expansion and unsuitable Chinese ontology mapping

Inactive Publication Date: 2017-05-31
TIANJIN UNIV
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Problems solved by technology

[0003] However, ontology mapping is mainly applied to two existing heterogeneous ontologies, and cannot realize the dynamic expansion of a single ontology library, and some methods successfully applied to English ontology mapping are not suitable for Chinese ontology mapping

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  • Method for automatically expanding layering ontology knowledge base
  • Method for automatically expanding layering ontology knowledge base
  • Method for automatically expanding layering ontology knowledge base

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Embodiment Construction

[0026] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation examples. The described specific implementation examples are only for explaining the present invention, and are not intended to limit the present invention.

[0027] A kind of method for automatically expanding hierarchical ontology knowledge base that the present invention proposes, comprises the following steps:

[0028] Step 1. Construct a category relationship tree for the existing hierarchical ontology library; figure 1 As shown, the existing hierarchical ontology library selects the Chinese Wikipedia ontology library, uses Wikipedia's custom category labels, and adds the mapping from manually labeled suffix words of Wikipedia category names to category tree nodes. That is, the category marked "XXX athlete" in advance should correspond to "person" on the category tree, and "XXX company" should correspond...

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Abstract

The invention discloses a method for automatically expanding a layering ontology knowledge base. The method comprises the steps of 1, constructing a category relationship tree for an existing layering ontology base; 2, extracting categories in the layering ontology base and characteristics of pre-plugged new entities; 3, by means of the characteristics obtained through extraction in the step 2, calculating the similarity of the category nodes in the new entities and the category relationship tree from top to bottom in the category relationship tree where the layering ontology knowledge base is located; 4, processing the pre-plugged new entities and the entities in the categories according to the situations, and therefore achieving expansion of the layering ontology knowledge base. Integration of the new entities constantly appearing in a semantic net is achieved through the layering ontology knowledge base, an ontology base with the unified standards is formed, assistances are provided for the semantic net for achieving knowledge sharing and interoperation, expression and inference based on semantics can be achieved, and a good foundation is laid for further building a credible semantic net.

Description

technical field [0001] The concept of ontology originated in the field of philosophy [1], and has been widely used as a semantic basis in information retrieval, artificial intelligence, semantic network, software engineering, natural language processing, e-commerce and knowledge management. The invention relates to a method for extending an existing ontology database, especially a dynamic and automatic extension method for a hierarchical ontology knowledge base. Background technique [0002] Ontology is the core of the Semantic Web as an explicit formalized specification of a shared conceptual model [2]. In order to make full use of existing ontologies, many studies focus on ontology mapping, that is, to find semantic connections between heterogeneous ontologies. Mapping technology can be divided into element layer mapping and structure layer mapping [3]. The element-level mapping technology ignores the relationship between elements and other elements, and only considers t...

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/2246G06F16/288
Inventor 王博王盈辉武贤丽
Owner TIANJIN UNIV
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