Efficient fusion and retrieval system and method for multi-source place name data

Abstract

The invention provides a multi-source geographical name data source efficient fusion and retrieval system, and the system is characterized in that a multi-source geographical name data processing module is used for analyzing an internal structure of open-source geographical name data to extract common fields, defining a standardized geographical name data structure meeting business requirements, and based on the defined standardized geographical name data structure, analyzing and screening the geographical name data from different sources and converting the geographical name data into a standardized geographical name data structure, defining a repeatability test rule of the geographical name data, performing duplicate judgment on the standardized geographical name data, checking whether the converted geographical name data exists in a geographical name database or not, if so, updating the geographical name data, otherwise, adding the converted geographical name data into the geographical name database; and the global geographical name data search module is used for establishing a name index and a spatial position index, carrying out geographical name query based on a geographical name of the word segmentation index, and carrying out positioning query based on a geographical range or a geographical point and a radius. According to the invention, efficient query of place name data can be realized.

Description

technical field [0001] The invention relates to the field of computer information technology, in particular to an efficient fusion and retrieval system for multi-source place name data. Background technique [0002] Place names are very important spatial information. As an important part of national natural resources, social management and geospatial information, modern management and service activities in various fields such as domestic and foreign affairs, economy and society, production and life, all require the support and service of geographical name information. However, my country's global geographical name database is not perfect. For example, the official Chinese national geographical name database only provides domestic geographical name data. Some domestic map service providers, such as AutoNavi and Baidu Maps, only provide data for China and some neighboring countries and regions. The administrative geographical name data related to foreign countries are mainly t...

AI Technical Summary

Problems solved by technology

Although the above spatial indexes are very effective, when the dimension increases sharply, the efficiency of the spatial index will drop sharply when there is too much place name data

In addition, the GeoHash algorithm converts two-dimensional data into one-dimensional and uses ordinary B-tree indexes to realize spatial retrieval. Although it has local order preservation, it also has mutations, and there may be sequential mutations. When querying this part of the place name data inefficiency

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