Method and device for building POI dictionary

Abstract

The invention provides a method and device for building a POI dictionary. The method comprises the following steps: carrying out word segmentation on POI names in a POI name set, and clustering the POI names, the participle matching degrees of which accord with thresholds, on appointed positions after the word segmentation; determining the longest and/or shortest character lengths of the POI names in the clusters; generating POI data entries of the clusters on the basis of the participles, on the appointed positions, of the POI names in the clusters and the longest and/or shortest character lengths of the PO names in the clusters; and building the POI dictionary according to the POI data entries of the clusters. The participles, on the appointed positions, of the POI names are smaller than the POI names in the aspect of data volume, so that the POI dictionary built in the invention is smaller than the dictionary built through the POI names in the prior art in the aspect of data volume; and when the POI dictionary is loaded to a memory, fewer memory resources are consumed.

Description

technical field [0001] The invention relates to the technical field of Internet applications, in particular to a method and device for constructing a POI dictionary. Background technique [0002] POI is the abbreviation of "Point of Interest", which can be translated as "Point of Interest" in Chinese. In a geographic information system, a POI can be a house, a store, a mailbox, a bus stop, etc., and each POI data can include information such as name, address, and nearby hotels, restaurants, and shops. [0003] The traditional POI data collection method requires technicians to use sophisticated surveying and mapping instruments to obtain the latitude and longitude information of each POI, and then mark them down. This method is time-consuming and laborious, resulting in a small amount of POI data collected. There are a lot of POI data in the form of text on the Internet. If these POI data are extracted from the text for use in geographic information systems, it will save man...

AI Technical Summary

Problems solved by technology

The dictionary needs to be loaded at the beginning of the search. However, when the number of POI names is large or a single POI name is too long, since the dictionary is composed of a large

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