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698 results on '"Ikeda, Tetsuo"'

3. Inverted-File k-Means Clustering: Performance Analysis

Author

Aoyama, Kazuo, Saito, Kazumi, and Ikeda, Tetsuo

Subjects
Statistics - Machine Learning, Computer Science - Machine Learning
Abstract

This paper presents an inverted-file k-means clustering algorithm (IVF) suitable for a large-scale sparse data set with potentially numerous classes. Given such a data set, IVF efficiently works at high-speed and with low memory consumption, which keeps the same solution as a standard Lloyd's algorithm. The high performance arises from two distinct data representations. One is a sparse expression for both the object and mean feature vectors. The other is an inverted-file data structure for a set of the mean feature vectors. To confirm the effect of these representations, we design three algorithms using distinct data structures and expressions for comparison. We experimentally demonstrate that IVF achieves better performance than the designed algorithms when they are applied to large-scale real document data sets in a modern computer system equipped with superscalar out-of-order processors and a deep hierarchical memory system. We also introduce a simple yet practical clock-cycle per instruction (CPI) model for speed-performance analysis. Analytical results reveal that IVF suppresses three performance degradation factors: the numbers of cache misses, branch mispredictions, and the completed instructions., Comment: 15 pages, 20 figures

Published
2020

4. Potential therapeutic targets discovery by transcriptome analysis of an in vitro human gastric signet ring carcinoma model

Author

Yamaguchi, Kyoko, Yoshihiro, Tomoyasu, Ariyama, Hiroshi, Ito, Mamoru, Nakano, Michitaka, Semba, Yuichiro, Nogami, Jumpei, Tsuchihashi, Kenji, Yamauchi, Takuji, Ueno, Shohei, Isobe, Taichi, Shindo, Koji, Moriyama, Taiki, Ohuchida, Kenoki, Nakamura, Masafumi, Nagao, Yoshihiro, Ikeda, Tetsuo, Hashizume, Makoto, Konomi, Hiroyuki, Torisu, Takehiro, Kitazono, Takanari, Kanayama, Tomohiro, Tomita, Hiroyuki, Oda, Yoshinao, Kusaba, Hitoshi, Maeda, Takahiro, Akashi, Koichi, and Baba, Eishi

Published
2022
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15. Acceleration of Functional Cluster Extraction and Analysis of Cluster Affinity

Author

Fushimi, Takayasu, Saito, Kazumi, Ikeda, Tetsuo, Kazama, Kazuhiro, Alhajj, Reda, Series Editor, Glässer, Uwe, Series Editor, Liu, Huan, Series Editor, Wittek, Rafael, Series Editor, Zeng, Daniel, Series Editor, Aggarwal, Charu C., Editorial Board Member, Brantingham, Patricia L., Editorial Board Member, Gross, Thilo, Editorial Board Member, Han, Jiawei, Editorial Board Member, Manásevich, Raúl, Editorial Board Member, Masys, Anthony J., Editorial Board Member, Morselli, Carlo, Editorial Board Member, and Özyer, Tansel, editor

Published
2018
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17. The evolution of surgical treatment for gastrointestinal cancers

Author

Maehara, Yoshihiko, Soejima, Yuji, Yoshizumi, Tomoharu, Kawahara, Naoyuki, Oki, Eiji, Saeki, Hiroshi, Akahoshi, Tomohiko, Ikegami, Toru, Yamashita, Yo-ichi, Furuyama, Tadashi, Sugimachi, Keishi, Harada, Noboru, Tagawa, Tetsuzo, Harimoto, Norifumi, Itoh, Shinji, Sonoda, Hideto, Ando, Koji, Nakashima, Yuichiro, Nagao, Yoshihiro, Yamashita, Nami, Kasagi, Yuta, Yukaya, Takafumi, Kurihara, Takeshi, Tsutsumi, Ryosuke, Takamori, Shinkichi, Sasaki, Shun, Ikeda, Tetsuo, Yonemitsu, Yoshikazu, Fukuhara, Takasuke, Kitao, Hiroyuki, Iimori, Makoto, Kataoka, Yuki, Wakasa, Takeshi, Suzuki, Masami, Teraishi, Koji, Yoshida, Yasuto, and Mori, Masaki

Published
2019
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19. Accelerating Greedy K-Medoids Clustering Algorithm with Distance by Pivot Generation

Author

Fushimi, Takayasu, Saito, Kazumi, Ikeda, Tetsuo, Kazama, Kazuhiro, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Kryszkiewicz, Marzena, editor, Appice, Annalisa, editor, Ślęzak, Dominik, editor, Rybinski, Henryk, editor, Skowron, Andrzej, editor, and Raś, Zbigniew W., editor

Published
2017
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20. Photo‐oxygenation of histidine residue inhibits α‐synuclein aggregation

Author

Nakamura, Reito, primary, Tomizawa, Ikumi, additional, Iwai, Atsushi, additional, Ikeda, Tetsuo, additional, Hirayama, Kota, additional, Chiu, Yung Wen, additional, Suzuki, Takanobu, additional, Tarutani, Airi, additional, Mano, Tatsuo, additional, Iwata, Atsushi, additional, Toda, Tatsushi, additional, Sohma, Youhei, additional, Kanai, Motomu, additional, Hori, Yukiko, additional, and Tomita, Taisuke, additional

Published
2023
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22. Modeling of Travel Behavior Processes from Social Media

Author

Yamagishi, Yuki, Saito, Kazumi, Ikeda, Tetsuo, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Booth, Richard, editor, and Zhang, Min-Ling, editor

Published
2016
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24. Multimodal radiofrequency ablation versus laparoscopic hepatic resection for the treatment of primary hepatocellular carcinoma within Milan criteria in severely cirrhotic patients: long-term favorable outcomes over 10 years

Author

Yamashita, Yo-ichi, Imai, Katsunori, Kaida, Takayoshi, Yamao, Takanobu, Tsukamoto, Masayo, Nakagawa, Shigeki, Okabe, Hirohisa, Chikamoto, Akira, Ishiko, Takatoshi, Yoshizumi, Tomoharu, Ikeda, Tetsuo, Maehara, Yoshihiko, and Baba, Hideo

Published
2019
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30. Similarity Search by Generating Pivots Based on Manhattan Distance

Author

Kobayashi, Eri, Fushimi, Takayasu, Saito, Kazumi, Ikeda, Tetsuo, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, Series editor, Tanaka, Yuzuru, Series editor, Wahlster, Wolfgang, Series editor, Siekmann, Jörg, Series editor, Pham, Duc-Nghia, editor, and Park, Seong-Bae, editor

Published
2014
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32. An Efficient Method for Odor Retrieval

Author

Takayama, Tsuyoshi, Kikuchi, Shigeru, Murata, Yoshitoshi, Sato, Nobuyoshi, Ikeda, Tetsuo, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Hu, Bin, editor, Liu, Jiming, editor, Chen, Lin, editor, and Zhong, Ning, editor

Published
2011
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