Graph-based efficient SPARQL query response method and device and equipment

An efficient and labeled graph technology, applied in the field of data processing, can solve problems such as a large amount of computing time, storage space, query response time, etc., and achieve the effect of improving the accuracy and improving the response rate of implicit responses.

Active Publication Date: 2021-08-06
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

Saturation leads to efficient query evaluation, but it requires a lot of computation time, storage space, and must be recomputed on update; due to the

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  • Graph-based efficient SPARQL query response method and device and equipment
  • Graph-based efficient SPARQL query response method and device and equipment
  • Graph-based efficient SPARQL query response method and device and equipment

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Embodiment Construction

[0053] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0054] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the exemplary embodiments of the present invention shall have common meanings understood by those skilled in the art to which the present disclosure belongs. "First", "second" and similar words used in the exemplary embodiments of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Comprising" or "comprising" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and their equivalents, without excluding other elements or items. Words such as "connected" or "connected...

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Abstract

The embodiment of the invention provides a graph-based efficient SPARQL query response method and device and equipment, and the method comprises the steps of: modeling a triple of an RDF data set into a directed marked graph, grouping and merging entity vertexes of the directed marked graph, and forming a multi-level abstract graph, wherein an object and a main body in the triple are the entity vertexes of the directed marked graph; constructing an auxiliary data structure, and constructing an abstract graph as an index in combination with entity vertexes connected with the same class in the directed marked graph, wherein the auxiliary data structure comprises a set of semantic inclusion relationships in a directed marked graph mode, and the directed marked graph mode is used for describing features of the directed marked graph; querying by accessing the abstract graph, and giving a response result. The query response effect of the method is far better than that of an existing query method.

Description

technical field [0001] Exemplary embodiments of the present invention relate to the technical field of data processing, and in particular to a graph-based efficient SPARQL query answering method, device and equipment. Background technique [0002] Due to the increasing use of RDF data, efficiently processing SPARQL queries on RDF datasets has become an important issue. In graph-based RDF data management schemes, SPARQL queries are transformed into subgraph schemas and evaluated on RDF graphs by graph matching. However, answering SPARQL queries requires processing RDF reasoning to model implicit triples in RDF data, which is largely ignored by existing graph-based solutions. [0003] In graph-based solutions, SPARQL queries are transformed into a graph schema P and then evaluated on an RDF graph G. The query evaluation process is performed by matching variables in P with elements of G such that the returned graph is contained in G (pattern matching). The main advantage of ...

Claims

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Application Information

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IPC IPC(8): G06F16/31G06F16/332G06F16/33G06F16/338G06F40/30
CPCG06F16/316G06F16/3329G06F16/3344G06F16/338G06F40/30
Inventor 郭得科罗来龙王希张千桢郑龙
Owner NAT UNIV OF DEFENSE TECH
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