Ken Kobayashi

Publication Activity (10 Years)

Years Active: 1999-2024
Publications (10 Years): 30

Top Topics

Highly Reliable

Policy Evaluation

Portfolio Optimization

Top Venues

J. Glob. Optim.

SocialNLP@NAACL

Publications

Kentaro Kanamori, Takuya Takagi, Ken Kobayashi, Yuichi Ike
Learning Decision Trees and Forests with Algorithmic Recourse. CoRR (2024)
Haruka Kiyohara, Ren Kishimoto, Kosuke Kawakami, Ken Kobayashi, Kazuhide Nakata, Yuta Saito
Towards Assessing and Benchmarking Risk-Return Tradeoff of Off-Policy Evaluation. ICLR (2024)
Keisuke Mizutani, Ayaka Ueta, Ryota Ueda, Ray Oishi, Tomofumi Hara, Yuki Hoshino, Ken Kobayashi, Kazuhide Nakata
Zero-Inflated Poisson Tensor Factorization for Sparse Purchase Data in E-Commerce Markets. ICIEA-EU (2024)
Naoki Nishimura, Ken Kobayashi, Kazuhide Nakata
Balancing Immediate Revenue and Future Off-Policy Evaluation in Coupon Allocation. CoRR (2024)
Haruka Kiyohara, Ren Kishimoto, Kosuke Kawakami, Ken Kobayashi, Kazuhide Nakata, Yuta Saito
SCOPE-RL: A Python Library for Offline Reinforcement Learning and Off-Policy Evaluation. CoRR (2023)
Keisho Oh, Naoki Nishimura, Minje Sung, Ken Kobayashi, Kazuhide Nakata
An IPW-based Unbiased Ranking Metric in Two-sided Markets. CoRR (2023)
Masaki Higashi, Minje Sung, Daiki Yamane, Kenta Inamuro, Shota Nagai, Ken Kobayashi, Kazuhide Nakata
Decision Tree Clustering for Time Series Data: An Approach for Enhanced Interpretability and Efficiency. PRICAI (2) (2023)
Ken Kobayashi, Yuichi Takano, Kazuhide Nakata
Cardinality-constrained distributionally robust portfolio optimization. Eur. J. Oper. Res. 309 (3) (2023)
Kentaro Kanamori, Takuya Takagi, Ken Kobayashi, Yuichi Ike
Counterfactual Explanation with Missing Values. CoRR (2023)
Haruka Kiyohara, Ren Kishimoto, Kosuke Kawakami, Ken Kobayashi, Kazuhide Nakata, Yuta Saito
Towards Assessing and Benchmarking Risk-Return Tradeoff of Off-Policy Evaluation. CoRR (2023)
Kentaro Kanamori, Takuya Takagi, Ken Kobayashi, Yuichi Ike
Counterfactual Explanation Trees: Transparent and Consistent Actionable Recourse with Decision Trees. AISTATS (2022)
Ryoji Tanabe, Youhei Akimoto, Ken Kobayashi, Hiroshi Umeki, Shinichi Shirakawa, Naoki Hamada
A two-phase framework with a bézier simplex-based interpolation method for computationally expensive multi-objective optimization. GECCO (2022)
Akiyoshi Sannai, Yasunari Hikima, Ken Kobayashi, Akinori Tanaka, Naoki Hamada
Bézier Flow: a Surface-wise Gradient Descent Method for Multi-objective Optimization. CoRR (2022)
Ryoji Tanabe, Youhei Akimoto, Ken Kobayashi, Hiroshi Umeki, Shinichi Shirakawa, Naoki Hamada
A Two-phase Framework with a Bézier Simplex-based Interpolation Method for Computationally Expensive Multi-objective Optimization. CoRR (2022)
Akinori Tanaka, Akiyoshi Sannai, Ken Kobayashi, Naoki Hamada
Approximate Bayesian Computation of Bézier Simplices. CoRR (2021)
Kei Tsukamoto, Akira Ebisui, Tetsuro Goto, Yoshiaki Sakakura, Ken Kobayashi, Satoshi Sato, Takahiro Kamei, Yutaka Imai, Kazumasa Nomoto
Soft-Material-Based Highly Reliable Tri-Axis Tactile Thin-Film Sensors for Robotic Manipulation Tasks. IEEE SENSORS (2021)
Hayato Kobayashi, Hiroaki Taguchi, Yoshimune Tabuchi, Chahine Koleejan, Ken Kobayashi, Soichiro Fujita, Kazuma Murao, Takeshi Masuyama, Taichi Yatsuka, Manabu Okumura, Satoshi Sekine
A Case Study of In-House Competition for Ranking Constructive Comments in a News Service. SocialNLP@NAACL (2021)
Ken Kobayashi, Yuichi Takano, Kazuhide Nakata
Bilevel cutting-plane algorithm for cardinality-constrained mean-CVaR portfolio optimization. J. Glob. Optim. 81 (2) (2021)
Ken Kobayashi, Yuichi Takano, Kazuhide Nakata
Cardinality-constrained Distributionally Robust Portfolio Optimization. CoRR (2021)
Kentaro Kanamori, Takuya Takagi, Ken Kobayashi, Yuichi Ike, Kento Uemura, Hiroki Arimura
Ordered Counterfactual Explanation by Mixed-Integer Linear Optimization. AAAI (2021)
Kentaro Kanamori, Takuya Takagi, Ken Kobayashi, Hiroki Arimura
DACE: Distribution-Aware Counterfactual Explanation by Mixed-Integer Linear Optimization. IJCAI (2020)
Akinori Tanaka, Akiyoshi Sannai, Ken Kobayashi, Naoki Hamada
Asymptotic Risk of Bézier Simplex Fitting. AAAI (2020)
Tomokaze Shiratori, Ken Kobayashi, Yuichi Takano
Prediction of hierarchical time series using structured regularization and its application to artificial neural networks. CoRR (2020)
Kentaro Kanamori, Takuya Takagi, Ken Kobayashi, Yuichi Ike, Kento Uemura, Hiroki Arimura
Ordered Counterfactual Explanation by Mixed-Integer Linear Optimization. CoRR (2020)
Ken Kobayashi, Yuichi Takano
A branch-and-cut algorithm for solving mixed-integer semidefinite optimization problems. Comput. Optim. Appl. 75 (2) (2020)
Akinori Tanaka, Akiyoshi Sannai, Ken Kobayashi, Naoki Hamada
Asymptotic Risk of Bezier Simplex Fitting. CoRR (2019)
Ken Kobayashi, Naoki Hamada, Akiyoshi Sannai, Akinori Tanaka, Kenichi Bannai, Masashi Sugiyama
Bézier Simplex Fitting: Describing Pareto Fronts of Simplicial Problems with Small Samples in Multi-Objective Optimization. AAAI (2019)
Li Sun, Xiaoyi Yu, Liuan Wang, Jun Sun, Hiroya Inakoshi, Ken Kobayashi, Hiromichi Kobashi
Automatic Neural Network Search Method for Open Set Recognition. ICIP (2019)
Kazuma Murao, Ken Kobayashi, Hayato Kobayashi, Taichi Yatsuka, Takeshi Masuyama, Tatsuru Higurashi, Yoshimune Tabuchi
A Case Study on Neural Headline Generation for Editing Support. NAACL-HLT (2) (2019)
Ryuta Tamura, Ken Kobayashi, Yuichi Takano, Ryuhei Miyashiro, Kazuhide Nakata, Tomomi Matsui
Mixed integer quadratic optimization formulations for eliminating multicollinearity based on variance inflation factor. J. Glob. Optim. 73 (2) (2019)
Yuichi Kurita, Roland Kempf, Yoshichika Iida, Jumpei Okude, Makoto Kaneko, Hiromu K. Mishima, Hidetoshi Tsukamoto, Eiichiro Sugimoto, Seiki Katakura, Ken Kobayashi, Yoshiaki Kiuchi
Contact-Based Stiffness Sensing of Human Eye. IEEE Trans. Biomed. Eng. 55 (2) (2008)
Naomi Hidaka, Ken Kobayashi, Hideaki Sugama, Ryo Usui, Yoshihiro Tanabe, Osamu Hashimoto
Log-Periodic Dipole Antenna Array-Type Optical Electric Field Sensor. IEICE Trans. Electron. (1) (2005)
Ken Kobayashi, Masato Suzuki, Sadao Sasaya
Grafting Robot. J. Robotics Mechatronics 11 (3) (1999)