Method and system for identifying geographical name entities

A technology of entity recognition and place names, applied in the field of geographic information, can solve problems such as poor recognition of different descriptions, insufficient recognition rate of place name entities, and single attribute of place name entities

Inactive Publication Date: 2013-12-11
SHENZHEN AUDAQUE DATA TECH
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Problems solved by technology

Geographical information-based applications, especially communication addresses, are an important part of geographical name entity recognition. At present, many natural language processing platforms that involve named entity recognition do not have a high enough recognition rate for geographical name entities. This is mainly reflected in: first, The place name entity category has a single attribute, only place names are used to identify all place names, and the level of place...

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  • Method and system for identifying geographical name entities
  • Method and system for identifying geographical name entities
  • Method and system for identifying geographical name entities

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Embodiment Construction

[0018] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] A method and system for entity recognition of place names provided by the present invention segment the address text according to the dictionary metadata, then mark the segmentation results with the corresponding place name categories according to the place name category definition table, and carry out the labeling sequence through the Viterbi algorithm Optimize and correct the labeling sequence according to the context to obtain the final labeling result, which makes the recognition result of place name entity accurate and practical.

[0020] Such as figure 1 It is a schematic flow ch...

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Abstract

The invention provides a method for identifying geographical name entities. The method comprises the steps that address texts are input and pre-processing is conducted on the address texts; address segmentation is conducted on the address texts according to dictionary metadata; address labeling is conducted on segmentation results, and an optimal address level labeling sequence is obtained; according to the context, the labeling sequence is revised, and an optimal labeling result is output. According to the dictionary metadata, the address segmentation is conducted on the address texts, then corresponding geographical name categories are labeled on the segmentation result according to a geographical name category definition table, the labeling sequence is optimized through a Viterbi algorithm, the labeling sequence is revised according to the context, and the final labeling result is obtained. Therefore, the geographical name entity identification result is accurate, and practicability is high. In addition, the invention provides a system for identifying the geographical name entities.

Description

technical field [0001] The present invention relates to the field of geographic information, in particular to a method and system for entity recognition of place names. Background technique [0002] With the development of geographic information system GIS, remote sensing system RS, and global satellite positioning system GPS, especially the wide application of mobile Internet LBS, applications based on geographic information have increasingly become a part of people's lives. Geographical information-based applications, especially communication addresses, are an important part of geographical name entity recognition. At present, many natural language processing platforms that involve named entity recognition do not have a high enough recognition rate for geographical name entities. This is mainly reflected in: first, The place name entity category has a single attribute, only place names are used to identify all place names, and the level of place names (province level, pre...

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/3334G06F16/38G06F40/295
Inventor 王国印贾西贝
Owner SHENZHEN AUDAQUE DATA TECH
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