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In present work, we propose a single topic user group discovering scheme, which includes three phases: topic impact evaluation, interest degree measurement, and trust chain based discovering, to enable selecting influential topic and discovering users into a topic oriented group. Our main works include<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M1\"><mml:mo stretchy=\"false\">(<\/mml:mo><mml:mn fontstyle=\"italic\">1<\/mml:mn><mml:mo stretchy=\"false\">)<\/mml:mo><\/mml:math>an overview of proposed scheme and its related definitions;<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M2\"><mml:mo stretchy=\"false\">(<\/mml:mo><mml:mn fontstyle=\"italic\">2<\/mml:mn><mml:mo stretchy=\"false\">)<\/mml:mo><\/mml:math>topic space construction method based on topic relatedness clustering and its impact (influence degree and popularity degree) evaluation;<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M3\"><mml:mo stretchy=\"false\">(<\/mml:mo><mml:mn fontstyle=\"italic\">3<\/mml:mn><mml:mo stretchy=\"false\">)<\/mml:mo><\/mml:math>a trust chain model to take user relation network topological information into account with a strength classification perspective;<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M4\"><mml:mo stretchy=\"false\">(<\/mml:mo><mml:mn fontstyle=\"italic\">4<\/mml:mn><mml:mo stretchy=\"false\">)<\/mml:mo><\/mml:math>an interest degree (user explicit and implicit interest degree) evaluation method based on trust chain among users; and<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M5\"><mml:mo stretchy=\"false\">(<\/mml:mo><mml:mn fontstyle=\"italic\">5<\/mml:mn><mml:mo stretchy=\"false\">)<\/mml:mo><\/mml:math>a topic space oriented user group discovering method to group core users according to their explicit interest degrees and to predict ordinary users under implicit interest and user trust chain. Finally, experimental results are given to explain effectiveness and feasibility of our scheme.<\/jats:p>","DOI":"10.1155\/2016\/4091323","type":"journal-article","created":{"date-parts":[[2016,3,20]],"date-time":"2016-03-20T21:01:10Z","timestamp":1458507670000},"page":"1-25","source":"Crossref","is-referenced-by-count":0,"title":["A Topic Space Oriented User Group Discovering Scheme in Social Network: A Trust Chain Based Interest Measuring Perspective"],"prefix":"10.1155","volume":"2016","author":[{"given":"Wang","family":"Dong","sequence":"first","affiliation":[{"name":"Department of Computer Science and Information Engineering, Shanghai Institute of Technology, Shanghai 201418, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wang","family":"Peng","sequence":"additional","affiliation":[{"name":"School of Management, Fudan University, Shanghai, China"},{"name":"Shanghai Cloud Valley Development Co., Ltd., Shanghai, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Li","family":"Meizi","sequence":"additional","affiliation":[{"name":"College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai 200234, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhang","family":"Bo","sequence":"additional","affiliation":[{"name":"College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai 200234, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","reference":[{"key":"1","doi-asserted-by":"publisher","DOI":"10.1002\/dac.1380"},{"key":"6","doi-asserted-by":"publisher","DOI":"10.1111\/jcc4.12078"},{"key":"8","doi-asserted-by":"publisher","DOI":"10.1007\/s13278-012-0082-8"},{"key":"11","doi-asserted-by":"publisher","DOI":"10.1016\/j.knosys.2011.09.019"},{"key":"9","doi-asserted-by":"publisher","DOI":"10.1002\/dac.1320"},{"key":"10","doi-asserted-by":"publisher","DOI":"10.1016\/j.dss.2005.05.019"},{"key":"12","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.122653799"},{"key":"13","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0086028"},{"key":"14","doi-asserted-by":"publisher","DOI":"10.3724\/sp.j.1001.2009.03318"},{"key":"15","doi-asserted-by":"publisher","DOI":"10.3724\/sp.j.1146.2012.01676"},{"key":"16","doi-asserted-by":"publisher","DOI":"10.1007\/s13278-012-0052-1"},{"key":"17","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.112.098702"},{"key":"19","doi-asserted-by":"publisher","DOI":"10.1016\/j.eswa.2012.07.021"},{"key":"20","doi-asserted-by":"publisher","DOI":"10.3233\/FI-2014-994"},{"key":"24","doi-asserted-by":"publisher","DOI":"10.1016\/j.knosys.2008.03.049"},{"key":"26","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-642-36973-5_19"},{"key":"28","doi-asserted-by":"publisher","DOI":"10.1016\/j.future.2013.05.006"},{"issue":"3","key":"29","first-page":"235","volume":"6","year":"2008","journal-title":"International Journal of Network Security"},{"key":"30","doi-asserted-by":"publisher","DOI":"10.1016\/j.comnet.2012.05.002"},{"key":"31","doi-asserted-by":"publisher","DOI":"10.1002\/cpe.1837"},{"key":"32","doi-asserted-by":"publisher","DOI":"10.1016\/j.eswa.2012.05.084"},{"key":"33","doi-asserted-by":"publisher","DOI":"10.1145\/1594173.1594174"}],"container-title":["Scientific Programming"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/downloads.hindawi.com\/journals\/sp\/2016\/4091323.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/sp\/2016\/4091323.xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/sp\/2016\/4091323.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,5,16]],"date-time":"2020-05-16T16:37:02Z","timestamp":1589647022000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.hindawi.com\/journals\/sp\/2016\/4091323\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016]]},"references-count":22,"alternative-id":["4091323","4091323"],"URL":"https:\/\/doi.org\/10.1155\/2016\/4091323","relation":{},"ISSN":["1058-9244","1875-919X"],"issn-type":[{"type":"print","value":"1058-9244"},{"type":"electronic","value":"1875-919X"}],"subject":[],"published":{"date-parts":[[2016]]}}}