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Resource description framework (RDF) graph pattern matching method

A resource description framework and matching method technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as complex process, low efficiency, and large time overhead, so as to reduce time overhead and interrupt time overhead , the effect of improving execution efficiency

Active Publication Date: 2012-10-10
四川电子科技大学教育发展基金会
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Problems solved by technology

, but this method is more effective when it is mainly applied to fuzzy matching or ontology reasoning. There are certain limitations for the complete matching method of SPARQL
Since this method needs to interact with the main program after each match, and modify the content in the data structure to generate the next round of matching conditions, the process is complex and time-consuming, and the efficiency is relatively low

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  • Resource description framework (RDF) graph pattern matching method
  • Resource description framework (RDF) graph pattern matching method
  • Resource description framework (RDF) graph pattern matching method

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Embodiment Construction

[0034] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0035]In order to distinguish, the basic RDF graph schema is called graph schema or matching graph schema in this application, and the data to be queried is called original graph.

[0036] The Resource Description Framework (RDF) uses Web identifiers to identify things and describes resources through properties and property values. where resource is anything that can have a URI, such as http: / / www.w3school.com.cn / rdf ; An attribute is a resource with a name, such as "author" or "homepage"; and an attribute value is the value of an attribute, such as "David" or "http: / / www.w3school.com.cn" (note that an attribute The value can be another resource).

[0037] Resources, attributes and attribute values ​​constitute the basic structure of triples in RFD expressions. In a triple, the resource itself i...

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Abstract

The invention relates to a semantic network database retrieval technology, and discloses a resource description framework (RDF) graph pattern matching method. The method comprises the following steps of: converting a simple protocol and RDF query language (SPARQL) query program segment edited by a user into triple information, storing the triple information into an element structure table according to a constant, a variable and blank nodes, generating a structured query language (SQL) query statement segment according to data in the element structure table, and querying a relational database by query master control. RDF data resources are stored in the relational database in a triple mode. The result obtained by querying the relational database is processed by complex pattern solution and packed, and a result in a form of an xml document or a relational data table is returned to a user.

Description

technical field [0001] The invention relates to a semantic web database retrieval technology, in particular to a resource description frame diagram pattern matching method. Background technique [0002] The Semantic Web has become a hot spot in the development of the Internet in recent years. The Semantic Web, which represents the future of intelligent networks, is a knowledge-centered model. In addition to human-readable document and XML message formats, it adds data that machines can understand and process. [0003] Resource Description Framework (RDF) is a standard data model for describing Web resources. Due to the semi-structured nature of Web data, the RDF query language should support the query of semi-structured data. The SRARQL (SPARQL Protocol and RDF Query Language) language proposed by the World Wide Web Consortium (W3C) is such a semi-structured query language for RDF graphs. [0004] SPARQL is to the Semantic Web what SQL is to relational databases. The dif...

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Application Information

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IPC IPC(8): G06F17/30
Inventor 陈佳吴跃吴少智黎明
Owner 四川电子科技大学教育发展基金会
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