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One well known method to overcome this limitation is automatic query expansion (AQE), whereby the user\u2019s original query is augmented by new features with a similar meaning. AQE has a long history in the information retrieval community but it is only in the last years that it has reached a level of scientific and experimental maturity, especially in laboratory settings such as TREC. This survey presents a unified view of a large number of recent approaches to AQE that leverage various data sources and employ very different principles and techniques. The following questions are addressed. Why is query expansion so important to improve search effectiveness? What are the main steps involved in the design and implementation of an AQE component? What approaches to AQE are available and how do they compare? Which issues must still be resolved before AQE becomes a standard component of large operational information retrieval systems (e.g., search engines)?<\/jats:p>","DOI":"10.1145\/2071389.2071390","type":"journal-article","created":{"date-parts":[[2012,1,31]],"date-time":"2012-01-31T14:49:20Z","timestamp":1328021360000},"page":"1-50","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":637,"title":["A Survey of Automatic Query Expansion in Information Retrieval"],"prefix":"10.1145","volume":"44","author":[{"given":"Claudio","family":"Carpineto","sequence":"first","affiliation":[{"name":"Fondazione Ugo Bordoni"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giovanni","family":"Romano","sequence":"additional","affiliation":[{"name":"Fondazione Ugo Bordoni"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[2012,1]]},"reference":[{"key":"e_1_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.1145\/990301.990303"},{"key":"e_1_2_1_2_1","volume-title":"Elhuyar-ixa: Semantic relatedness and cross-lingual passage retrieval","author":"Agirre E.","year":"2009","unstructured":"Agirre , E. , Ansa , O. , Arregi , X. , de Lacalle , M. 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Suryanto, M. A., Lim, E.-P., Sun, A., and Chiang, R. H. 2007. Document expansion versus query expansion for ad-hoc retrieval. In Proceedings of the ACM 1st Workshop on CyberInfrastructure: Information Management in eScience. ACM Press, 47--54."},{"key":"e_1_2_1_175_1","volume-title":"Proceedings of the 13th International Conference on Very Large Data Bases. ACM Press, 648--659","author":"Theobald M.","unstructured":"Theobald , M. , Shenkel , R. , and Weikum , G . 2004. Top-k query evaluation with probabilistic guarantees . In Proceedings of the 13th International Conference on Very Large Data Bases. ACM Press, 648--659 . Theobald, M., Shenkel, R., and Weikum, G. 2004. Top-k query evaluation with probabilistic guarantees. In Proceedings of the 13th International Conference on Very Large Data Bases. ACM Press, 648--659."},{"key":"e_1_2_1_176_1","doi-asserted-by":"publisher","DOI":"10.1145\/1076034.1076077"},{"key":"e_1_2_1_177_1","unstructured":"van Rijsbergen C. J. 1979. 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