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In particular, we focus on the problem of extracting place semantics for tags that are assigned to photos on Flickr, a popular-photo sharing Web site that supports location (latitude\/longitude) metadata for photos. We propose the adaptation of two baseline methods, inspired by well-known burst-analysis techniques, for the task; we also describe two novel methods, TagMaps and scale-structure identification. We evaluate the methods on a subset of Flickr data. We show that our scale-structure identification method outperforms existing techniques and that a hybrid approach generates further improvements (achieving 85% precision at 81% recall). The approach and methods described in this work can be used in other domains such as geo-annotated Web pages, where text terms can be extracted and associated with usage patterns.<\/jats:p>","DOI":"10.1145\/1462148.1462149","type":"journal-article","created":{"date-parts":[[2009,1,20]],"date-time":"2009-01-20T14:41:13Z","timestamp":1232462473000},"page":"1-30","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":131,"title":["Methods for extracting place semantics from Flickr tags"],"prefix":"10.1145","volume":"3","author":[{"given":"Tye","family":"Rattenbury","sequence":"first","affiliation":[{"name":"Intel Corporation, Santa Clara, CA"}]},{"given":"Mor","family":"Naaman","sequence":"additional","affiliation":[{"name":"Rutgers University, New Brunswick, NJ"}]}],"member":"320","published-online":{"date-parts":[[2009,1,17]]},"reference":[{"key":"e_1_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.1145\/1255175.1255177"},{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1007\/11853565_1"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1145\/1240624.1240772"},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.1145\/1008992.1009040"},{"key":"e_1_2_1_5_1","volume-title":"Proceedings of the Workshop on Geographic Information Retrieval.","author":"Arampatzis A.","unstructured":"Arampatzis , A. , van Kreveld , M. , Reinbacher , I. , Clough , P. , Joho , H. , Sanderson , M. , Jones , C. 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