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This paper presents a novel global trust model based on confirmation theory. The reputation of peers is calculated by C-F model according the bartering history, and then the peer decides to download the sharing file from which the peer has good reputation. Analyses and simulations show that this trust model can discard the malicious peer from p2p system effectively and improve the rate of successful barter greatly.<\/jats:p>","DOI":"10.1145\/1044552.1044558","type":"journal-article","created":{"date-parts":[[2005,11,7]],"date-time":"2005-11-07T19:28:32Z","timestamp":1131391712000},"page":"56-62","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":18,"title":["A trust model of p2p system based on confirmation theory"],"prefix":"10.1145","volume":"39","author":[{"given":"Hou","family":"Mengshu","sequence":"first","affiliation":[{"name":"College of Computer Science and Engineering of UEST of China, Chengdu, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lu","family":"Xianliang","sequence":"additional","affiliation":[{"name":"College of Computer Science and Engineering of UEST of China, Chengdu, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhou","family":"Xu","sequence":"additional","affiliation":[{"name":"College of Computer Science and Engineering of UEST of China, Chengdu, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhan","family":"Chuan","sequence":"additional","affiliation":[{"name":"College of Computer Science and Engineering of UEST of China, Chengdu, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2005,1]]},"reference":[{"doi-asserted-by":"publisher","key":"e_1_2_1_1_1","DOI":"10.1145\/502585.502638"},{"doi-asserted-by":"publisher","key":"e_1_2_1_2_1","DOI":"10.1145\/586110.586138"},{"unstructured":"Clip2 Company Gnutella. http:\/\/www.clip2.com\/gnutella.html]]  Clip2 Company Gnutella. http:\/\/www.clip2.com\/gnutella.html]]","key":"e_1_2_1_3_1"},{"doi-asserted-by":"publisher","key":"e_1_2_1_4_1","DOI":"10.1145\/511446.511496"},{"key":"e_1_2_1_5_1","first-page":"1272","article-title":"Cooperative peer groups in NICE","author":"Lee S","year":"2003","unstructured":"Lee S , Sherwood R , and Bhattacharjee B , Cooperative peer groups in NICE , in IEEE Infocom , Apr. 2003 , p 1272 -- 1282 .]] Lee S, Sherwood R, and Bhattacharjee B, Cooperative peer groups in NICE, in IEEE Infocom, Apr. 2003, p1272--1282.]]","journal-title":"IEEE Infocom"},{"doi-asserted-by":"publisher","key":"e_1_2_1_6_1","DOI":"10.1145\/775152.775242"},{"doi-asserted-by":"publisher","key":"e_1_2_1_8_1","DOI":"10.5555\/646747.701489"},{"key":"e_1_2_1_9_1","volume-title":"Artificial Intelligence Principle and Application","author":"Wanshen Wang","year":"2000","unstructured":"Wanshen Wang . 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In SPIE Conference on Multimedia Computing and networking, Jan. 2002, p156--170.]]"},{"key":"e_1_2_1_13_1","first-page":"132","volume-title":"Hailes S. Supporting Trust in Virtual Communities. In Proceedings of the 33rd Hawaii International Conference on System Sciences","author":"Abdul-Rahman A","year":"2000","unstructured":"Abdul-Rahman A , Hailes S. Supporting Trust in Virtual Communities. In Proceedings of the 33rd Hawaii International Conference on System Sciences , 2000 , p 132 -- 140 ]] Abdul-Rahman A, Hailes S. Supporting Trust in Virtual Communities. In Proceedings of the 33rd Hawaii International Conference on System Sciences, 2000, p 132--140]]"},{"key":"e_1_2_1_14_1","series-title":"Lecture Notes in Computer Science","volume-title":"Munindar P. Singh: A Social Mechanism of Reputation Management in Electronic Communities Proc. of the 4th International Workshop on Cooperative Information Agents","author":"Bin Yu","year":"2000","unstructured":"Bin Yu , Munindar P. Singh: A Social Mechanism of Reputation Management in Electronic Communities Proc. of the 4th International Workshop on Cooperative Information Agents , Matthias Klusch, Larry Kerschberg (Eds.), Lecture Notes in Computer Science , Vol. 1860 , Springer , 2000 . 154--165]] Bin Yu, Munindar P. Singh: A Social Mechanism of Reputation Management in Electronic Communities Proc. of the 4th International Workshop on Cooperative Information Agents, Matthias Klusch, Larry Kerschberg (Eds.), Lecture Notes in Computer Science, Vol. 1860, Springer, 2000. 154--165]]"},{"key":"e_1_2_1_15_1","volume-title":"International Conference on Electronic Commerce Research (ICECR-5)","author":"Xiong L.","year":"2002","unstructured":"L. Xiong and L. Liu , Building trust in decentralized peer-to-peer communities , in International Conference on Electronic Commerce Research (ICECR-5) , Oct. 2002 .]] L. Xiong and L. 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