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Efficient large-scale robust optimization algorithms and their applications to machine learning

Research Project

Project/Area Number 15K00031
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Mathematical informatics
Research InstitutionThe University of Tokyo (2015, 2018-2019)
The Institute of Statistical Mathematics (2016-2017)

Principal Investigator

Takeda Akiko  東京大学, 大学院情報理工学系研究科, 教授 (80361799)

Project Period (FY) 2015-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywordsロバスト最適化 / 不確実性 / 多期間ロバスト最適化問題 / 非凸非平滑最適化 / 太陽光発電システム / 外れ値検出 / システム同定 / 非平滑非凸最適化問題 / DCアルゴリズム / 非凸最適化 / DCアルゴズム / 多期間ロバスト最適化 / スパースポートフォリオ選択 / 太陽光発電システム導入量 / 統一的判別モデル / 加速近接勾配法 / 二次制約付き二次計画問題 / 半正定値緩和 / 射影計算 / サポートベクターマシン / ロジスティック回帰
Outline of Final Research Achievements

We have conducted research that aimed at improving and extending robust optimization methods so that they can be used in real-world problems.
(1) Since many classification models can be described using robust optimization problems (min-max problems), we have developed an efficient optimization algorithm for the min-max problem and analyzed the convergence of the algorithm. (2) The multi-period robust optimization problem is a difficult problem in which min-max is repeated for the length of the period. We developed an efficient algorithm using duality of the problem, and applied it to a solar power generation system for deciding the best size of solar system. (3) For the general non-convex optimization problem including the problem in (1), we proposed an efficient solution method based on the first-order method and applied it to real-world problems such as outlier detection problem and system identification problem.

Academic Significance and Societal Importance of the Research Achievements

ロバスト最適化法は不確実な要因に対して1つの値を想定せず集合を与えて意思決定する手法であり,不確実な要因の記述方法を工夫することにより,不確実性を含んだ問題を解きやすいクラスの問題に帰着させる.一方で,定式化や不確実な要因の記述方法に強い条件があり,その条件が満たされないと,途端に解くすべの無い問題に帰着されてしまうという問題点があった.本課題では,そのように解くすべの無い問題に帰着されても,具体的な適用先(機械学習の判別問題や外れ値問題,太陽光発電システム)のモデルの特徴を利用することにより,理論保証のついた効率的な解法を構築できること示し,実際にその適用可能性を数値実験にて示した.

Report

(6 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (101 results)

All 2020 2019 2018 2017 2016 2015 Other

All Int'l Joint Research (22 results) Journal Article (30 results) (of which Int'l Joint Research: 12 results,  Peer Reviewed: 28 results,  Open Access: 6 results,  Acknowledgement Compliant: 1 results) Presentation (43 results) (of which Int'l Joint Research: 26 results,  Invited: 17 results) Book (1 results) Remarks (5 results)

  • [Int'l Joint Research] Vrije Universiteit Brussel(ベルギー)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Southampton(英国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] The Hong Kong Polytechnic University(中国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Ewha Womans University(韓国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] National University of Singapore(シンガポール)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Ewha Womans University(韓国)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] National University of Singapore(シンガポール)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] Hong Kong Polytechnic University(その他の国・地域)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] Vrije Universiteit Brussel(ベルギー)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] University of Southampton(英国)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] Ewha Womans University(韓国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] University of Southampton/University of Bristol(英国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] Universidad Autonoma de Madrid(スペイン)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] the Hong Kong Polytechnic University(香港)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] University of Southampton/University of Oxford(英国)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] Ewha Womans University/KAIST(韓国)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] National University of Singapore(シンガポール)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] University of Southampton(英国)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] Universidad Autonoma de Madrid(スペイン)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] Ewha Womans University(韓国)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] National University of Singapore(シンガポール)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] Massachusetts Institute of Technology(米国)

    • Related Report
      2015 Research-status Report
  • [Journal Article] Construction Methods of the Nearest Positive System2020

    • Author(s)
      Kazuhiro Sato, Akiko Takeda
    • Journal Title

      IEEE Control Systems Letters

      Volume: 4 Issue: 1 Pages: 97-102

    • DOI

      10.1109/lcsys.2019.2921838

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Robust Bayesian Model Selection for Variable Clustering with the Gaussian Graphical Model2020

    • Author(s)
      Daniel Andrade, Akiko Takeda, Kenji Fukumizu
    • Journal Title

      Statistics and Computing

      Volume: 30 Issue: 2 Pages: 351-376

    • DOI

      10.1007/s11222-019-09879-9

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Estimation of Gaussian Mixture Models via Tensor Moments with Application to Online Learning2020

    • Author(s)
      Donya Rahmani, Mahesan Niranjan, Damien Fay, Akiko Takeda, Jacek Brodzki
    • Journal Title

      Pattern Recognition Letters

      Volume: 131 Pages: 285-292

    • DOI

      10.1016/j.patrec.2020.01.001

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A successive difference-of-convex approximation method for a class of nonconvex nonsmooth optimization problems2019

    • Author(s)
      Tianxiang Liu, Ting Kei Pong, Akiko Takeda
    • Journal Title

      Mathematical Programming

      Volume: 176 Issue: 1-2 Pages: 339-367

    • DOI

      10.1007/s10107-018-1327-8

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A refined convergence analysis of pDCAe with applications to simultaneous sparse recovery and outlier detection2019

    • Author(s)
      Liu Tianxiang、Pong Ting Kei、Takeda Akiko
    • Journal Title

      Computational Optimization and Applications

      Volume: 73 Issue: 1 Pages: 69-100

    • DOI

      10.1007/s10589-019-00067-z

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Algorithm 996: BBCPOP: A Sparse Doubly Nonnegative Relaxation?of Polynomial Optimization Problems?with Binary, Box and Complementarity Constraints2019

    • Author(s)
      Naoki Ito, Sunyoung Kim, Masakazu Kojima, Akiko Takeda and Kim-Chuan Toh
    • Journal Title

      ACM Transaction on Mathematical Software

      Volume: 45 Issue: 3 Pages: 1-26

    • DOI

      10.1145/3309988

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Simple Stochastic Gradient Methods for Non-Smooth Non-Convex Regularized Optimization2019

    • Author(s)
      Michael Metel, Akiko Takeda
    • Journal Title

      Proceedings of the 36th International Conference on Machine Learning

      Volume: 97 Pages: 4537-4545

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Subspace methods for multi-channel sum-of-exponentials common dynamics estimation2019

    • Author(s)
      Ivan Markovsky, Tianxiang Liu, Akiko Takeda
    • Journal Title

      2019 IEEE 58th Conference on Decision and Control (CDC)

      Volume: - Pages: 2672-2675

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Improving cash logistics in bank branches by coupling machine learning and robust optimization2018

    • Author(s)
      Lopez Lazaro Jorge、Barbero Jimenez Alvaro、Takeda Akiko
    • Journal Title

      Expert Systems with Applications

      Volume: 92 Pages: 236-255

    • DOI

      10.1016/j.eswa.2017.09.043

    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Optimal Sizing of Energy Storage Systems for the Energy Procurement Problem in Multi-Period Markets under Uncertainties2018

    • Author(s)
      Konishi Ryusuke、Takeda Akiko、Takahashi Masaki
    • Journal Title

      Energies

      Volume: 11 Issue: 1 Pages: 158-158

    • DOI

      10.3390/en11010158

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Successive Lagrangian relaxation algorithm for nonconvex quadratic optimization2018

    • Author(s)
      Yamada Shinji、Takeda Akiko
    • Journal Title

      Journal of Global Optimization

      Volume: On-line First Issue: 2 Pages: 1-38

    • DOI

      10.1007/s10898-018-0617-2

    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Equivalences and differences in conic relaxations of combinatorial quadratic optimization problems2018

    • Author(s)
      Ito N.、Kim S.、Kojima M.、Takeda A.、Toh K.-C.
    • Journal Title

      Journal of Global Optimization

      Volume: 72 Issue: 4 Pages: 619-653

    • DOI

      10.1007/s10898-018-0676-4

    • NAID

      40021559420

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Optimal sizing of photovoltaic systems for loss minimization in distribution network2018

    • Author(s)
      Ikeda Shunnosuke、Takeda Akiko、Ohmori Hiromitsu
    • Journal Title

      2018 SICE International Symposium on Control Systems (SICE ISCS)

      Volume: - Pages: 185-192

    • DOI

      10.23919/siceiscs.2018.8330174

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Nonconvex Optimization for Regression with Fairness Constraints2018

    • Author(s)
      Junpei Komiyama, Akiko Takeda, Junya Honda, Hajime Shimao
    • Journal Title

      Proceedings of Machine Learning Research (ICML2018)

      Volume: 80 Pages: 2737-2746

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Robust Densest Subgraph Discovery2018

    • Author(s)
      Atsushi Miyauchi, Akiko Takeda
    • Journal Title

      the 2018 IEEE International Conference on Data Mining

      Volume: - Pages: 1188-1193

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Position-based Multiple-play Multi-armed Bandit Problem with Unknown Position Bias2018

    • Author(s)
      Junpei Komiyama, Junya Honda, Akiko Takeda,
    • Journal Title

      Proceedings of the 31st Neural Information Processing Systems (NIPS 2017)

      Volume: 印刷中

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Trimmed Density Ratio Estimation2018

    • Author(s)
      Song Liu, Akiko Takeda, Taiji Suzuki, Kenji Fukumizu,
    • Journal Title

      Proceedings of the 31st Neural Information Processing Systems (NIPS 2017)

      Volume: 印刷中

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Optimal Sizing of Photovoltaic Systems for Loss Minimization2018

    • Author(s)
      Shunnosuke Ikeda, Akiko Takeda, Hiromitsu Ohmori,
    • Journal Title

      2018 SICE International Symposium on Control Systems

      Volume: -

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Exact Semidefinite Programming Relaxations with Truncated Moment Matrix for Binary Polynomial Optimization Problems2017

    • Author(s)
      Sakaue Shinsaku、Takeda Akiko、Kim Sunyoung、Ito Naoki
    • Journal Title

      SIAM Journal on Optimization

      Volume: 27 Issue: 1 Pages: 565-582

    • DOI

      10.1137/16m105544x

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] DC Algorithm for Extended Robust Support Vector Machine2017

    • Author(s)
      Fujiwara Shuhei、Takeda Akiko、Kanamori Takafumi
    • Journal Title

      Neural Computation

      Volume: 29 Issue: 5 Pages: 1406-1438

    • DOI

      10.1162/neco_a_00958

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Breakdown point of robust support vector machines2017

    • Author(s)
      Kanamori, T., Fujiwara, S., Takeda, A.
    • Journal Title

      Entropy

      Volume: 19 Issue: 2 Pages: 83-83

    • DOI

      10.3390/e19020083

    • NAID

      110009971425

    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Robustness of learning algorithms using hinge loss with outlier indicators2017

    • Author(s)
      Kanamori Takafumi、Fujiwara Shuhei、Takeda Akiko
    • Journal Title

      Neural Networks

      Volume: 94 Pages: 173-191

    • DOI

      10.1016/j.neunet.2017.07.005

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Exact SDP Relaxations with Truncated Moment Matrix for Binary Polynomial Optimization Problems2017

    • Author(s)
      Shinsaku Sakaue, Akiko Takeda, Sunyoung Kim, Naoki Ito
    • Journal Title

      SIAM Journal on Optimization

      Volume: 印刷中

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] DC Algorithm for Extended Robust Support Vector Machine2017

    • Author(s)
      Shuhei Fujiwara, Akiko Takeda, Takafumi Kanamori
    • Journal Title

      Neural Computation

      Volume: 印刷中

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Journal Article] Efficient DC Algorithm for Constrained Sparse Optimization2017

    • Author(s)
      Katsuya Tono, Akiko Takeda, Jun-ya Gotoh
    • Journal Title

      arXiv:1701.08498

      Volume: -

    • Related Report
      2016 Research-status Report
  • [Journal Article] Successive Lagrangian relaxation algorithm for nonconvex quadratic optimization2017

    • Author(s)
      Shinji Yamada, Akiko Takeda
    • Journal Title

      Mathematical Engineering Technical Reports METR 2017-08

      Volume: -

    • Related Report
      2016 Research-status Report
  • [Journal Article] Outlier-Detection at the Transcriptome-Proteome Interface2015

    • Author(s)
      Yawwani Gunawardana, Shuhei Fujiwara, Akiko Takeda, Jeongmin Woo, Christopher Woelk, Mahesan Niranjan
    • Journal Title

      Bioinfomatics

      Volume: - Issue: 15 Pages: 2530-2536

    • DOI

      10.1093/bioinformatics/btv182

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Journal Article] Optimizing Over Coherent Risk Measures and Non-convexities: A Robust Mixed Integer Optimization Approach2015

    • Author(s)
      Dimitris Bertsimas, Akiko Takeda
    • Journal Title

      Computational Optimization and Applications

      Volume: 62 Issue: 3 Pages: 613-639

    • DOI

      10.1007/s10589-015-9755-3

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Computing the signed distance between overlapping ellipsoids2015

    • Author(s)
      Satoru Iwata, Yuji Nakatsukasa, Akiko Takeda
    • Journal Title

      SIAM Journal on Optimization

      Volume: 25 Issue: 4 Pages: 2359-2384

    • DOI

      10.1137/140979654

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Journal Article] Robust Cost Sensitive Support Vector Machine2015

    • Author(s)
      Shuichi Katsumata, Akiko Takeda
    • Journal Title

      JMLR Workshop and Conference Proceedings

      Volume: 38 Pages: 434-443

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Presentation] Group Lasso for Household Energy Consumption Prediction and Toward Nonconvex Regularizer2019

    • Author(s)
      Akiko Takeda
    • Organizer
      The PolyU AMA - RIKEN AIP Joint Workshop on Optimization and Machine Learning,
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] DC Formulations and Algorithms for Sparse Optimization Problems2019

    • Author(s)
      Akiko Takeda
    • Organizer
      the Sixth International Conference on Continuous Optimization (ICCOPT 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Efficient DC algorithm for nonconvex sparse optimization problems2019

    • Author(s)
      Akiko Takeda
    • Organizer
      International Conference on Optimization: Techniques and Applications (NACA-ICOTA2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Efficient DC Algorithm for Nonconvex Nonsmooth Optimization Problems2019

    • Author(s)
      Akiko Takeda
    • Organizer
      Faculty Seminar, Southwest Jiaotong University
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 世の中の「困った」を解決する数学:数理最適化法の紹介2019

    • Author(s)
      武田朗子
    • Organizer
      RDC展 2019, 東芝研究開発センター
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Nonconvex Sparse Optimization by Proximal Difference-of-convex Algorithm2019

    • Author(s)
      Akiko Takeda
    • Organizer
      2019 Optimization Workshop
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Efficient DC Algorithm for constrained sparse optimization problems2018

    • Author(s)
      Akiko Takeda
    • Organizer
      23rd International Symposium on Mathematical Programming (ISMP 2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Nonconvex Sparse Optimization by DC Algorithm2018

    • Author(s)
      Akiko Takeda
    • Organizer
      7th International Conference on Control and Optimization with Applications (7thOCA)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Nonconvex Sparse Optimization by Proximal Difference-of-convex Algorithm2018

    • Author(s)
      Akiko Takeda
    • Organizer
      Chile- Japan Academic Forum 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Hyperparameter Learning via Bilevel Nonsmooth Optimization2018

    • Author(s)
      Akiko Takeda
    • Organizer
      The Workshop on Vari- ational Analysis and Stochastic Optimization
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] スパース最適化手法の紹介とエネルギー需要予測への適用2018

    • Author(s)
      武田朗子
    • Organizer
      計測自動制御学会,モデルベース ト制御における機械学習とダイナミクスの融合 調査研究会 (DML 研究会)
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] ロバスト最適化法の教師あり機械学習への適用2018

    • Author(s)
      武田朗子
    • Organizer
      IEICE-MSS,CAS IPSJ-AL 共催研究会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Efficient DC Algorithm for Nonconvex Nonsmooth Optimization Problems2018

    • Author(s)
      Akiko Takeda
    • Organizer
      Georgia Tech and Friedrich-Alexander-Universitat Workshop 2018
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Household energy consumption prediction by feature selection of lifestyle data2018

    • Author(s)
      Akiko Takeda
    • Organizer
      CURENT SLC Seminar, The University of Tennessee
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Efficient DC Algorithm for Nonconvex Nonsmooth Optimization Problems2018

    • Author(s)
      Akiko Takeda
    • Organizer
      Tokyo Deep Learning Workshop 2018
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 非凸二次計画問題に対する凸二次緩和反復解法2017

    • Author(s)
      山田 慎二, 武田 朗子
    • Organizer
      日本オペレーションズ・リサーチ 学会 2017 年春季研究発表会
    • Place of Presentation
      沖縄県市町村自治会館, 那覇市, 沖縄県
    • Year and Date
      2017-03-15
    • Related Report
      2016 Research-status Report
  • [Presentation] ライフスタイルデータの特徴選択による電力消費モデル2017

    • Author(s)
      西田 光甫, 武田 朗子, 岩田 覚, 木方 真理子, 中山 功
    • Organizer
      日本オペレーションズ・リサーチ 学会 2017 年春季研究発表会
    • Place of Presentation
      沖縄県市町村自治会館, 那覇市, 沖縄県
    • Year and Date
      2017-03-15
    • Related Report
      2016 Research-status Report
  • [Presentation] 電力需要予測への機械学習法の適用2017

    • Author(s)
      高松 瑞代, 武田 朗子, 岩田 覚
    • Organizer
      日本オペレーションズ・リサーチ 学会 2017 年春季研究発表会
    • Place of Presentation
      沖縄県市町村自治会館, 那覇市, 沖縄県
    • Year and Date
      2017-03-15
    • Related Report
      2016 Research-status Report
  • [Presentation] 実用的な加速近接勾配法の実装2017

    • Author(s)
      伊藤 直紀, 武田 朗子, Kim-Chuan Toh
    • Organizer
      日本オペレーションズ・リサーチ 学会 2017 年春季研究発表会
    • Place of Presentation
      沖縄県市町村自治会館, 那覇市, 沖縄県
    • Year and Date
      2017-03-15
    • Related Report
      2016 Research-status Report
  • [Presentation] Proximal DC Algorithm for Sparse Optimization2017

    • Author(s)
      Akiko Takeda
    • Organizer
      SIAM Conference on Optimization
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Proximal DC Algorithm for Sparse Optimization2017

    • Author(s)
      Akiko Takeda
    • Organizer
      Seminar, Vrije Universiteit Brussel
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Proximal DC Algorithm for Sparse Optimization2017

    • Author(s)
      Akiko Takeda
    • Organizer
      France / Japan Machine Learning Workshop
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Household Energy Consumption Prediction by Feature Selection of Lifestyle Data2017

    • Author(s)
      Akiko Takeda
    • Organizer
      the 2nd ISM-ZIB-IMI MODAL Workshop on Mathematical Optimization and Data Analysis
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Efficient DC Algorithm for Sparse Optimization2017

    • Author(s)
      Akiko Takeda
    • Organizer
      Workshop on Recent Development in Optimization, National Graduate Institute for Policy Studies
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 数理最適化の視点から機械学習の紹介2017

    • Author(s)
      武田朗子
    • Organizer
      金沢数理データサイエンス研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] Efficient DC Algorithm for Sparse Optimization2017

    • Author(s)
      Akiko Takeda, Katsuya Tono, Jun-ya Gotoh
    • Organizer
      Numerical Analysis Group Internal Seminar University of Oxford
    • Place of Presentation
      University of Oxford, Oxford, UK
    • Related Report
      2016 Research-status Report
  • [Presentation] Nonconvex Quadratic Optimization with One or Two Constraints2017

    • Author(s)
      Satoru Iwata, Yuji Nakatsukasa, Shinsaku Sakaue, Akiko Takeda
    • Organizer
      CORMSIS Seminar
    • Place of Presentation
      University of Southampton, Southampton, UK
    • Related Report
      2016 Research-status Report
  • [Presentation] DC Formulations and Algorithms for Sparse Optimization Problems2017

    • Author(s)
      Akiko Takeda, Katsuya Tono, Jun-ya Gotoh
    • Organizer
      ECS Department Seminar
    • Place of Presentation
      University of Southampton, Southampton, UK
    • Related Report
      2016 Research-status Report
  • [Presentation] A Link between DC Algorithms and Proximal Gradient Methods2016

    • Author(s)
      Katsuya Tono, Akiko Takeda, Jun-ya Gotoh
    • Organizer
      the Fifth International Conference on Continuous Optimization (ICCOPT 2016)
    • Place of Presentation
      National Graduate Institute for Policy Studies, Minato-ku, Tokyo
    • Year and Date
      2016-08-06
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Exact SDP Relaxations with Truncated Moment Matrix for Binary Polynomial Optimization Problems2016

    • Author(s)
      Shinsaku Sakaue, Akiko Takeda, Sunyoung Kim, Naoki Ito
    • Organizer
      the Fifth International Conference on Continuous Optimization (ICCOPT 2016)
    • Place of Presentation
      National Graduate Institute for Policy Studies, Minato-ku, Tokyo
    • Year and Date
      2016-08-06
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Fast Approximation Method for Nonconvex Quadratic Optimizations with Few Constraints2016

    • Author(s)
      Shinji Yamada, Akiko Takeda
    • Organizer
      the Fifth International Conference on Continuous Optimization (ICCOPT 2016)
    • Place of Presentation
      National Graduate Institute for Policy Studies, Minato-ku, Tokyo
    • Year and Date
      2016-08-06
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 二値変数多項式最適化の縮小Lasserre hierarchy2016

    • Author(s)
      坂上 晋作, 武田 朗子, Kim Sunyoung, 伊藤直紀
    • Organizer
      研究集会「最適化:モデリングとアルゴリズム」
    • Place of Presentation
      政策研究大学院大学, 港区,東京都
    • Year and Date
      2016-03-22
    • Related Report
      2015 Research-status Report
  • [Presentation] DC計画法によるスパース最適化2016

    • Author(s)
      後藤 順哉,武田 朗子,東野 克哉
    • Organizer
      日本オペレーションズ・リサーチ学会 2016年春季研究発表会
    • Place of Presentation
      慶應義塾大学 矢上キャンパス,横浜市, 神奈川県
    • Year and Date
      2016-03-17
    • Related Report
      2015 Research-status Report
  • [Presentation] Robustness in Optimization under Uncertainty2016

    • Author(s)
      Akiko Takeda
    • Organizer
      Doctoral course in Machine Learning Group (GAA), Universidad Autonoma de Madrid
    • Place of Presentation
      Universidad Autonoma de Madrid, Madrid, Spain
    • Year and Date
      2016-03-15
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] DC Formulations and Algorithms for Sparse Optimization Problems2016

    • Author(s)
      Jun-ya Gotoh, Akiko Takeda, Katsuya Tono
    • Organizer
      Research Seminar of computer engineering and telecommunications
    • Place of Presentation
      Universidad Autonoma de Madrid, Madrid, Spain
    • Year and Date
      2016-03-14
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 二値変数多項式最適化の縮小Lasserre hierarchy2016

    • Author(s)
      坂上 晋作, 武田 朗子, Kim Sunyoung, 伊藤直紀
    • Organizer
      日本応用数理学会 第12回 研究部会連合発表会
    • Place of Presentation
      神戸学院大学 ポートアイランドキャンパス, 神戸市, 兵庫県
    • Year and Date
      2016-03-04
    • Related Report
      2015 Research-status Report
  • [Presentation] Proximal DC algorithm for Sparse Optimization2015

    • Author(s)
      Jun-ya Gotoh, Akiko Takeda, Katsuya Tono
    • Organizer
      Iternational Meeting on High-Dimensional Data Driven Science (HD3-2015)
    • Place of Presentation
      メルパルク京都,京都市,京都府
    • Year and Date
      2015-12-14
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] DC Formulations and Algorithms for Sparse Optimization Problems2015

    • Author(s)
      Akiko Takeda
    • Organizer
      Workshop on Systems Management and Control
    • Place of Presentation
      筑波大学 東京キャンパス,文京区,東京都
    • Year and Date
      2015-12-11
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] スパース正則化に対するDCアルゴリズム2015

    • Author(s)
      後藤 順哉,武田 朗子, 東野 克哉
    • Organizer
      第18回情報論的学習理論ワークショップ (IBIS2015)
    • Place of Presentation
      つくば国際会議場,つくば市,茨城県
    • Year and Date
      2015-11-25
    • Related Report
      2015 Research-status Report
  • [Presentation] ベースロード電源の負荷追従運転を考慮した再生可能エネルギーのロバスト設備投資計画問題2015

    • Author(s)
      松永 龍弥, 小西 隆介, 高橋 正樹, 武田 朗子
    • Organizer
      第58回自動制御連合講演会
    • Place of Presentation
      神戸大学, 神戸市, 兵庫県
    • Year and Date
      2015-11-14
    • Related Report
      2015 Research-status Report
  • [Presentation] A Unified Classification Algorithm Based on Accelerated Proximal Gradient Methods2015

    • Author(s)
      Akiko Takeda, Naoki Ito, Kim Chuan Toh
    • Organizer
      INFORMS Annual Meeting
    • Place of Presentation
      Pennsylvania Convention Center and adjacent Philadelphia Marriott Downtown Hotel in Center City Philadelphia, Philadelphia, USA
    • Year and Date
      2015-11-01
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Optimizing Over Coherent Risk Measures for Binary Classification2015

    • Author(s)
      Dimitris Bertsimas, Akiko Takeda
    • Organizer
      The 22nd International Symposium of Mathematical Programming (ISMP2015)
    • Place of Presentation
      Wyndham Grand Pittsburgh Downtown, Pittsburgh, USA
    • Year and Date
      2015-07-12
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] 簡素な制約を持つ凸最適化問題の解法とその応用2015

    • Author(s)
      伊藤 直紀, 武田朗子, Kim Chuan Toh
    • Organizer
      WOO@つくば 未来を担う若手研究者の集い 2015
    • Place of Presentation
      筑波大学,つくば市,茨城県
    • Year and Date
      2015-05-30
    • Related Report
      2015 Research-status Report
  • [Book] Chapter 10 (CVaR Minimizations in Support Vector Machines) in Financial Signal Processing and Machine Learning2016

    • Author(s)
      Jun-ya Gotoh, Akiko Takeda
    • Total Pages
      32
    • Publisher
      Wiley-Blackwell
    • Related Report
      2015 Research-status Report
  • [Remarks] Akiko Takeda's homepage

    • URL

      https://www.or.mist.i.u-tokyo.ac.jp/takeda/research-e.html

    • Related Report
      2019 Annual Research Report
  • [Remarks] 武田朗子のホームページ

    • URL

      https://www.or.mist.i.u-tokyo.ac.jp/takeda/index-j.html

    • Related Report
      2018 Research-status Report
  • [Remarks] 武田朗子のホームページ

    • URL

      http://www.or.mist.i.u-tokyo.ac.jp/takeda/index-e.html

    • Related Report
      2017 Research-status Report
  • [Remarks] 武田朗子のホームページ

    • URL

      http://www.ism.ac.jp/~atakeda/index-e.html

    • Related Report
      2016 Research-status Report
  • [Remarks] 武田朗子のホームページ

    • URL

      http://www.ism.ac.jp/~atakeda/index.html

    • Related Report
      2015 Research-status Report

URL: 

Published: 2015-04-16   Modified: 2022-02-22  

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