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Indexing method and device

An index and facet technology, applied in the field of spatial index, can solve the problem of low query efficiency, achieve the effect of improving spatial continuity, improving query efficiency, and high query efficiency

Active Publication Date: 2020-03-03
北斗伏羲信息技术有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The main purpose of the present invention is to provide an indexing method and device to solve the problem of low query efficiency when querying spatial objects in the related art

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Embodiment Construction

[0022] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0024] It should be noted that the terms "first" and "second" in ...

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Abstract

The invention discloses an indexing method and device. The method comprises the following steps: responding a selection command, wherein the selection command is used for indicating selection of a target region on multidimensional space, and the multidimensional space comprises subspaces in various levels; inquiring patch codes of a target patch, wherein the target region is completely covered by the target patch, each subspace comprises a plurality of patches in one level, and each patch corresponds to a patch code; and acquiring a data set by using the patch codes as index. By the indexing method and device, the problem that the inquiring efficiency is low when space objects are inquired by the correlation technique is solved.

Description

technical field [0001] The present invention relates to the technical field of spatial indexing, in particular to an indexing method and device. Background technique [0002] At present, among the various existing spatial index structures, the grid index is a common regular index form, but it adopts a single-scale index method, and when faced with the situation of spatial objects with large scale differences, the query efficiency The quadtree index and its related hybrid index are another common index form. When the commonly used linear quadtree index structure encodes the space, the spatial continuity of the encoding is poor. When querying spatial objects with large scale differences, the query efficiency will be affected. Therefore, in the related art, when querying spatial objects, the query efficiency is low. [0003] Aiming at the problem of low query efficiency when querying spatial objects in related technologies, no effective solution has been proposed yet. Conten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/29
CPCG06F16/29
Inventor 翟卫欣
Owner 北斗伏羲信息技术有限公司
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