2012 Fiscal Year Final Research Report
A STUDY OF RESOLVING LONG TAIL PHENOMENA BY MACHINE LEARNING
| Project/Area Number |
21240011
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Intelligent informatics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
YOSHIDA Minoru 東京大学, 情報基盤センター, 助教 (40361688)
KIYOTA Youji 東京大学, 情報基盤センター, 助教 (10401316)
SATO Issei 東京大学, 情報基盤センター, 助教 (90610155)
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| Co-Investigator(Renkei-kenkyūsha) |
NINOMIYA Takashi 東京大学, 情報基盤センター, 講師 (20444094)
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| Project Period (FY) |
2009 – 2012
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| Keywords | 知識発見 / データマイニング / 機械学習 / テキストマイニング / Web |
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| Research Abstract |
We developed a clustering system which makes clusters of web pages in response to a person name query in 2009 as planned, and evaluate it experimentally. In 2010, our contribution is a new non-negative probabilistic matrix decomposition algorithm and application of Variational Bayes method to Pitman-YO process. In 2011, our contribution for PPDM is a link analysis algorithm with public key encryption and specific protocol. In 2012, we developed a new online learning algorithm as well as new PPDM method.
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