Exploiting location information for Web search |
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Affiliation: | 1. Institute of Research and Development, Duy Tan University, Danang 550000, Vietnam;2. Department of Mathematics, Faculty of Information Technology, Vietnam National University of Agriculture, Hanoi, Vietnam;3. University of South Brittany, LMBA, Campus de Tohannic, Vannes 56017, France;1. State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi''an Jiaotong University, Xi''an 710049, China;2. School of Materials Science and Engineering, Xi''an Shiyou University, Xi''an 710065, China |
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Abstract: | Most Web pages contain location information, which are usually neglected by traditional search engines. Queries combining location and textual terms are called as spatial textual Web queries. Based on the fact that traditional search engines pay little attention in the location information in Web pages, in this paper we study a framework to utilize location information for Web search. The proposed framework consists of an offline stage to extract focused locations for crawled Web pages, as well as an online ranking stage to perform location-aware ranking for search results. The focused locations of a Web page refer to the most appropriate locations associated with the Web page. In the offline stage, we extract the focused locations and keywords from Web pages and map each keyword with specific focused locations, which forms a set of pairs. In the second online query processing stage, we extract keywords from the query, and computer the ranking scores based on location relevance and the location-constrained scores for each querying keyword. The experiments on various real datasets crawled from nj.gov, BBC and New York Time show that the performance of our algorithm on focused location extraction is superior to previous methods and the proposed ranking algorithm has the best performance w.r.t different spatial textual queries. |
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Keywords: | Ranking algorithm Spatial textual query Web search Location extraction |
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