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Because of the popularity of search engines, search indexes have become a new measure for describing public interest trends. With the help of a public search index provided by search engines, we construct a news topic search feature and a news object search feature. These features measure the public attention on key elements of the news. In the experiment, we compare various feature models with machine learning algorithms with respect to financial news recommendations. The results demonstrate that the topic search features perform best compared with other feature models. This research contributes to both the feature generation and news recommendation domains. <\/jats:p>","DOI":"10.1177\/0165551516639801","type":"journal-article","created":{"date-parts":[[2016,4,20]],"date-time":"2016-04-20T02:58:41Z","timestamp":1461121121000},"page":"328-341","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":4,"title":["A search index-enhanced feature model for news recommendation"],"prefix":"10.1177","volume":"43","author":[{"given":"Kun","family":"Chen","sequence":"first","affiliation":[{"name":"South University of Science and Technology, China"}]},{"given":"Xiaowen","family":"Ji","sequence":"additional","affiliation":[{"name":"Shandong University of Science and Technology, China"}]},{"given":"Huaiqing","family":"Wang","sequence":"additional","affiliation":[{"name":"South University of Science and Technology, China"}]}],"member":"179","published-online":{"date-parts":[[2016,4,1]]},"reference":[{"key":"bibr1-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1016\/j.ins.2013.08.034"},{"key":"bibr2-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1145\/1639714.1639794"},{"key":"bibr3-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1145\/1297231.1297250"},{"key":"bibr4-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1016\/j.dss.2015.04.004"},{"key":"bibr5-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1111\/j.1540-6261.2007.01232.x"},{"key":"bibr6-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1086\/267990"},{"key":"bibr7-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1111\/jcom.12088"},{"key":"bibr8-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1145\/1242572.1242610"},{"key":"bibr9-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1145\/1526709.1526802"},{"key":"bibr10-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1145\/1719970.1719976"},{"key":"bibr11-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1145\/371920.372071"},{"key":"bibr12-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1145\/963770.963774"},{"key":"bibr13-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1007\/s11390-011-0175-2"},{"key":"bibr14-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1177\/0165551515589069"},{"key":"bibr15-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1145\/1099554.1099683"},{"key":"bibr16-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1109\/ICMLC.2010.5580881"},{"key":"bibr17-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1111\/j.1540-6261.2004.00662.x"},{"key":"bibr18-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1016\/j.jocs.2010.12.007"},{"key":"bibr19-0165551516639801","doi-asserted-by":"publisher","DOI":"10.3115\/1620754.1620794"},{"key":"bibr20-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1111\/j.1540-6261.2010.01625.x"},{"key":"bibr21-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1109\/HICSS.2004.1265201"},{"key":"bibr22-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1109\/WIIAT.2008.309"},{"key":"bibr23-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1145\/1462198.1462204"},{"key":"bibr24-0165551516639801","first-page":"24","volume-title":"Proceedings of the 51st Annual Meeting of the Association for Computational Linguistics","author":"Si J","year":"2013"},{"key":"bibr25-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1016\/j.ipm.2014.06.005"},{"key":"bibr26-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1016\/j.dss.2007.06.009"},{"key":"bibr27-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1016\/j.ipm.2006.06.001"},{"key":"bibr28-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1007\/978-1-4615-0933-2"},{"key":"bibr29-0165551516639801","doi-asserted-by":"publisher","DOI":"10.2307\/25148852"},{"key":"bibr30-0165551516639801","first-page":"993","volume":"3","author":"Blei DM","year":"2003","journal-title":"Journal of Machine Learning Research"},{"key":"bibr31-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1177\/0165551515587839"},{"key":"bibr32-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1214\/07-AOAS114"},{"key":"bibr33-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1145\/2505515.2505612"},{"key":"bibr34-0165551516639801","doi-asserted-by":"publisher","DOI":"10.1002\/asi.23201"},{"key":"bibr35-0165551516639801","unstructured":"Matias. 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