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《Geomatics World》 2017-04
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Research on Multi-level Geographical Names and Addresses Service Based on Object Relational Database

DONG Jieyu;MA Mengyu;CHEN Luo;JING Ning;National University of Defense Technology;  
Geographical names and addresses service is the basic service of network map service,and its search efficiency and accuracy are very important for the user experience.Traditional geographical names and addresses service is usually based on full-text index.The ranking of search results is mainly based on the relevance with the user's search keywords.However,in the practical applications,the search results are often classified and sorted.This paper is based on Postgre SQL gin index to achieve the rapid retrieval of geographical names and addresses,discusses how to optimize the search results by modifying word segmentation dictionary with the hierarchical classification information,designs and realizes the architecture of geographical names and locations service,carries out the performance test,and provides a better retrieval experience for the users under the environment of big data.
【Key Words】: search of geographical names and addresses index optimization word frequency dictionary grading and classification
【Fund】: 国家863计划项目(2015AA123901);; 国家自然科学基金项目(41471321)资助
【CateGory Index】: P281;TP311.13
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