| Presentation | 2016-01-19 GPGPU Implementation of the MSD Method for Outlier Detection and Its Experimental Evaluation Shotaro Asano, Masato Inagi, Shinobu Nagayama, Shin'ichi Wakabayashi, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In recent years，as the information，communication and sensing technologies advance，data streams have been continuously growing in size．To detect data which do not match expected patterns from such a large set of data，outlier detection methods have been being studied．As one of them，the MSD method，which extends a simple outlier detection method based on the Mahalanobis distance，has been proposed．It requires a larger computation time than the simple method，but it realizes more robust outlier detection．To ease the problem of large computation time，in this study，we propose a GPGPU implementation of the MSD method，and perform experimentalevaluations．In the MSD method，before calculating the Mahalanobis distance between the past and new data，the weights of some of the past data which are likely to be outliers are reduced in order to improve the robustness of the detection．In this study，we focus on a fact that it consists of independent processes of randomly generating multiple bases，and thus implement it so that these processes are executed in parallel．In experiments，we confirmed the effectiveness of our proposed implementation． |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Outlier detection / Mahalanobis distance / MSD method / GPU |
| Paper # | VLD2015-83,CPSY2015-115,RECONF2015-65 |
| Date of Issue | 2016-01-12 (VLD, CPSY, RECONF) |
| Conference Information | |
| Committee | VLD / CPSY / RECONF / IPSJ-SLDM / IPSJ-ARC |
|---|---|
| Conference Date | 2016/1/19(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hiyoshi Campus, Keio University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | FPGA Applications, etc |
| Chair | Yusuke Matsunaga(Kyushu Univ.) / Yasuhiko Nakashima(NAIST) / Minoru Watanabe(Shizuoka Univ.) / Masahiro Fukui(Ritsumeikan Univ.) / Masahiro Goshima(国情研) |
| Vice Chair | Takashi Takenana(NEC) / Koji Nakano(Hiroshima Univ.) / Hidetsugu Irie(Univ. of Tokyo) / Masato Motomura(Hokkaido Univ.) / Yuichiro Shibata(Nagasaki Univ.) |
| Secretary | Takashi Takenana(Ritsumeikan Univ.) / Koji Nakano(Fujitsu Labs.) / Hidetsugu Irie(Fujitsu Labs.) / Masato Motomura(NII) / Yuichiro Shibata(Toshiba) / (Univ. of Tsukuba) / (Sharp) |
| Assistant | Ittetsu Taniguchi(Ritsumeikan Univ.) / Shinya Takameda(NAIST) / Takeshi Ohkawa(Utsunomiya Univ.) / Kazuya Tanikagawa(Hiroshima City Univ.) / Takefumi Miyoshi(e-trees.Japan) |
| Paper Information | |
| Registration To | Technical Committee on VLSI Design Technologies / Technical Committee on Computer Systems / Technical Committee on Reconfigurable Systems / Special Interest Group on System and LSI Design Methodology / Special Interest Group on System Architecture |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | GPGPU Implementation of the MSD Method for Outlier Detection and Its Experimental Evaluation |
| Sub Title (in English) | |
| Keyword(1) | Outlier detection |
| Keyword(2) | Mahalanobis distance |
| Keyword(3) | MSD method |
| Keyword(4) | GPU |
| 1st Author's Name | Shotaro Asano |
| 1st Author's Affiliation | Hiroshima City University(Hiroshima City Univ.) |
| 2nd Author's Name | Masato Inagi |
| 2nd Author's Affiliation | Hiroshima City University(Hiroshima City Univ.) |
| 3rd Author's Name | Shinobu Nagayama |
| 3rd Author's Affiliation | Hiroshima City University(Hiroshima City Univ.) |
| 4th Author's Name | Shin'ichi Wakabayashi |
| 4th Author's Affiliation | Hiroshima City University(Hiroshima City Univ.) |
| Date | 2016-01-19 |
| Paper # | VLD2015-83,CPSY2015-115,RECONF2015-65 |
| Volume (vol) | vol.115 |
| Number (no) | VLD-398,CPSY-399,RECONF-400 |
| Page | pp.pp.37-42(VLD), pp.37-42(CPSY), pp.37-42(RECONF), |
| #Pages | 6 |
| Date of Issue | 2016-01-12 (VLD, CPSY, RECONF) |