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A conversion method from geodatabase to geographic owl file based on ontology model

A conversion method and file technology, applied in the file system, file system management, etc., can solve the problems of unfavorable knowledge-level geographic information services, focus on structure, ignore semantics, etc., and achieve the effect of facilitating knowledge reuse and sharing

Active Publication Date: 2019-10-22
WUHAN INSTITUTE OF TECHNOLOGY
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  • Description
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Problems solved by technology

Moreover, the expression of geographic information pays attention to structure and ignores semantics, which is not conducive to geographic information services at the knowledge level.

Method used

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Embodiment Construction

[0025] Below in conjunction with embodiment the present invention is described in further detail.

[0026] This preferred embodiment is a method for converting Geodatabase to geographic OWL files based on an ontology model, specifically comprising the following specific steps:

[0027] S1 uses the ontology editing tool Protégé to construct a model of a geographic ontology OWL file. Among them, the model of the geographic ontology OWL file includes classes, object attributes, and data attributes, as well as the domain (domain) and range (range) of object attributes and data attributes; the classes are layer (LAYER), feature (FEATURE), feature Attribute definition (FIELDDEFN), feature coordinate definition (GEODEFN), FIELD (attribute), GDB and GeoBOX (geographic range covered by the dataset) are 7 classes, and the 7 classes are in parallel relationship, and each class contains its own some data attributes.

[0028] S2 loads the GDAL driver in the Java programming tool in the J...

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Abstract

The invention discloses an ontology model-based method for converting a Geodatabase into a geographical OWL (Web Ontology Language) file. Information, which cannot be recognized by a computer, is lack of semanteme and cannot be shared, in the Geodatabase is converted into a human-machine readable geographical OWL file so as to realize knowledge reuse and sharing of geographical information. The method comprises the following specific steps: S1, constructing a model of the geographical OWL file; S2, loading a GDAL driver, and acquiring a GDB data source according to a GDB file path; S3, analyzing GDB through DGAL, reading basic information of the GDB and GDB type individuals, traversing a layer to read layer information and layer type individuals, and traversing elements to read element information and element type individuals; S4, calling jena to analyze the information acquired by GDB analysis of GDAL in the step S3 and the model, which is constructed in the step S1, of the geographical OWL file, and generating the geographical OWL file through a file output stream.

Description

technical field [0001] The invention relates to the field of geographic data processing, in particular to a method for converting information in a geographic spatial database Geodatabase into geographic OWL files based on an ontology model. Background technique [0002] With the rapid development of computer technology, geographic information is exploding in the network environment. Massive geographic information presents diversity, and there are differences in system and structure, which is not conducive to the sharing of geographic information. Moreover, the expression of geographic information pays attention to structure and ignores semantics, which is not conducive to geographic information services at the knowledge level. [0003] Ontology is a clear formalized specification of a shared conceptual model; geographic ontology refers to the application of information ontology to the field of geosciences, abstracting knowledge and information related to the field of geogra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/11
Inventor 李晓林张玉敏严柯黄爽谢婷婷段艳会刘志杰
Owner WUHAN INSTITUTE OF TECHNOLOGY
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