DBSJの皆様、 以下の講演会が3月26日に東大生研にて行われます。 ふるってご参加ください。 東京大学生研 中野美由紀 ☆☆☆ 3月26日 講演会のご案内 ☆☆☆ 共催 日本データベース学会 ACM SIGMOD日本支部 電子情報通信学会東京支部 特定領域研究「情報爆発IT基盤」 日時 3月26日（水） 午後5時半〜午後6時半 場所 東京大学生産技術研究所 An棟 4階 小会議室3（An-407） http://www.iis.u-tokyo.ac.jp/map/index.html Speaker : Dr. Adam Wierzbicki (Polish-Japanese Institute of Information Technology) Title : Emergence of Fairness in Trust Management Systems 参加費 無料 参加ご希望の方は、 日本データベース学会のホームページにて ( http://www.dbsj.org/ ) 会員登録の後（会費無料、すでに登録されている方は結構です）、 sigmodj_lecture@tkl.iis.u-tokyo.ac.jpに 添付の参加申込書をお送り下さい。 皆様のご参加をお待ちしております。 日本データベース学会 国際関係委員会 委員長 （ACM SIGMOD日本支部 支部長） 横田 治夫 連絡先 中野 美由紀 連絡(問合せ)先 日本データベース学会、 ACM SIGMOD 日本支部 sigmodj_lecture@tkl.iis.u-tokyo.ac.jp http://www.dbsj.org/ ----------------------------------------------------------------- To: sigmodj_lecture@tkl.iis.u-tokyo.ac.jp 日本データベース学会・ACM SIGMOD日本支部共催 講演会 参加申し込み 3月26日（水）の講演会に参加 ・名前 ・ご所属 ------------------------------------------------------------------ プログラム Title : Emergence of Fairness in Trust Management Systems Abstract: Trust Management is widely used to support users in making decisions when the utility of their actions depends on behavior of others in open, distributed systems. An intuitive expectation is that if all users of the reputation system have similar characteristics, and the reputation system is working well, then all users should have similar utilities. Such an expectation can be formulated as a hypothesis: in successful reputation (or trust management) systems, fairness should be an emergent property. The notion of fairness can be precisely defined and investigated based on the theory of equity. In this talk, we investigate the Fairness Emergence hypothesis in reputation systems and prove that in realistic circumstances, the hypothesis is valid. However, Fairness Emergence is not a universal phenomenon. We study the sensitivity of Fairness Emergence to various aspects of a reputation systems. BIO Adam Wierzbicki received his B.S. in mathematics and M.S. in informatics from the University of Warsaw, in 1997 and 1998. In June 2003, he received a Ph.D. degree from the Institute of Telecommunications of the Warsaw University of Technology. His Ph.D. thesis titled “Content Distribution and Streaming Media Communication on the Internet” concerned design of content delivery networks for improved quality and performance of streaming media communication. Adam Wierzbicki is an expert in Peer-to-Peer computing. He has published several research papers on this subject and has been on the Program Chair of the International IEEE Peer-to-Peer Conference, as well as acted as co-editor of several journal issues on this subject. Apart from Peer-to-Peer computing, he is a specialist in the field of information security and trust management. His current research interests focus on trust management and fairness in distributed systems. Dr Wierzbicki heads the project uTrust (Universal Trust), financed by a research grant of the Polish Ministry of Science and Higher Education. See uTrust.pjwstk.edu.pl/ for further details. Dr Wierzbicki has published several papers on applications of the theory of equity to providing fairness in open distributed systems. He is also interested in knowledge management and e-learning. His professional experience includes a research contract with Philips, Natlab and a two-year employment as a systems designer for Suntech, Ltd, a software company that specializes in telecom management. Adam Wierzbicki is currently employed at the Polish-Japanese Institute for Information Technology, where he has the position of Vice-Dean of the Department of Informatics. He is also a team member of the European 6th Framework Research project “eGov-Bus”. Contact info: adamw@pjwstk.edu.pl Polish-Japanese Institute of Information Technology Ul. Koszykowa 86 02-008 Warsaw, Poland -- ----------------------------------------------------------------------- 中野 美由紀 東京大学 生産技術研究所 喜連川研究室 Miyuki NAKANO Institute of Industrial Science, Univ. of Tokyo miyuki@tkl.iis.u-tokyo.ac.jp