Geographic knowledge graph database construction method and device, medium and equipment

Abstract

The invention relates to a geographic knowledge graph database construction method and device, a medium and equipment. The method comprises the following steps: converting a remote sensing image into a geographic vector text, obtaining a POI data set in an electronic map, fusing the geographic vector text and the POI data set, and generating textualized data of a geographic entity set with geographic attributes; and importing textualized data of the geographic entity set into a Neo4j graph database, associating the textualized data with Mercator tile coordinates, and constructing a geographic knowledge graph database based on tile indexes. According to the method, the association of the geographic data and the spatial information is realized, and the geographic data and the spatial information are represented in a graph structure and stored in a graph database, so that more accurate and more efficient semantic query and search of the geographic information are achieved.

Description

technical field [0001] This article relates to graph databases, in particular to a method, device, medium and equipment for constructing a geographic knowledge graph database. Background technique [0002] The tile pyramid model is a multi-resolution hierarchical model. From the bottom layer to the top layer of the tile pyramid, the resolution becomes lower and lower, but the geographical range represented remains the same. The tile pyramid model is a model based on the Web Mercator projection. The Mercator projection is an "equal tangent cylindrical projection". It projects the earth into a two-dimensional plane through mathematical transformation. The advantage of the Mercator projection is that it does not change the relative position of objects before and after projection. The Web Mercator projection is a projection that simplifies the earth from an ellipsoid to a sphere. After the Web Mercator projection is performed on the earth, the quadtree segmentation method is ...

AI Technical Summary

Problems solved by technology

In related technologies, although the tile coordinates can realize the mapping between positioning and latitude and longitude coordinates, they cannot provide information related to the geographic location of the geographic entity, such as the administrative region to which the target geographic entity belongs, the area occupied, and other detailed information.

[0003] At the same time, for remote sensing images, remote sensing images include a lot of geographic entities, and these geographic entities have infinitely many latitude and longitude coordinates. , more efficient semantic query and search of geographic information

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