Hiroki Ishikura

Optimization of transporting time through load shuffling in automated storage and retrieval system and evaluation via demonstration experiments

Hiroki Ishikura, Makoto Tsukamoto, Shingo Egi, Keiichiro Yamamura, Yoshihiko Fujisawa, Akihiro Yoshida, Hiroyuki Koshiro, Katsuki Fujisawa

Japan Journal of Industrial and Applied Mathematics, May 27, 2025

Enhancing Output Diversity Improves Conjugate Gradient-based Adversarial Attacks.

Keiichiro Yamamura, Issa Oe, Hiroki Ishikura, Katsuki Fujisawa

CoRR, abs/2408.03972, 2024

Appropriate Balance of Diversification and Intensification Improves Performance and Efficiency of Adversarial Attacks.

Keiichiro Yamamura, Issa Oe, Nozomi Hata, Hiroki Ishikura, Katsuki Fujisawa

Trans. Mach. Learn. Res., 2024, 2024

Optimization of film-type optical fiber wiring design using mixed-integer programming problem

Hiroki Ishikura, Takashi Wakamatsu, Nozomi Hata, Katsuki Fujisawa

Japan Journal of Industrial and Applied Mathematics, Dec 29, 2023 Peer-reviewedLead author

Superpixel Attack: Enhancing Black-Box Adversarial Attack with Image-Driven Division Areas

Issa Oe, Keiichiro Yamamura, Hiroki Ishikura, Ryo Hamahira, Katsuki Fujisawa

Lecture Notes in Computer Science, 141-152, Nov 27, 2023 Peer-reviewed

Scheduling system for automated storage and retrieval system with multiple machines using a time-expanded network

Hiroki Ishikura, Nariaki Tateiwa, Shingo Egi, Issa Oe, Nozomi Hata, Toru Mitsutake, Keiichiro Yamamura, Miyu Fujii, Katsuki Fujisawa

Japan Journal of Industrial and Applied Mathematics, 41(1) 447-474, Oct 12, 2023 Peer-reviewedLead author

Development and Evaluation of Embedding Methods for Graphs with Multi Attributes

Miyu Fujii, David Taingngin, Keiichiro Yamamura, Nozomi Hata, Hiroki Kai, Ryuji Noda, Hiroki Ishikura, Tatsuru Higurashi, Katsuki Fujisawa

2022 IEEE International Conference on Big Data (Big Data), Dec 17, 2022 Peer-reviewed

Diversified Adversarial Attacks based on Conjugate Gradient Method.

Keiichiro Yamamura, Haruki Sato, Nariaki Tateiwa, Nozomi Hata, Toru Mitsutake, Issa Oe, Hiroki Ishikura, Katsuki Fujisawa

ICML, abs/2206.09628 24872-24894, Jul, 2022 Peer-reviewed

Diversified Adversarial Attacks based on Conjugate Gradient Method.

Keiichiro Yamamura, Haruki Sato, Nariaki Tateiwa, Nozomi Hata, Toru Mitsutake, Issa Oe, Hiroki Ishikura, Katsuki Fujisawa

ICML, abs/2206.09628, 2022 Peer-reviewed

Long-Term Optimal Delivery Planning for Replacing the Liquefied Petroleum Gas Cylinder.

Akihiro Yoshida, Haruki Sato, Shiori Uchiumi, Nariaki Tateiwa, Daisuke Kataoka, Akira Tanaka, Nozomi Hata, Yosuke Yatsushiro, Ayano Ide, Hiroki Ishikura …

CoRR, abs/2112.12530, Nov, 2021 Peer-reviewed

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