Publications

Publications

Journal

• A Hybrid Integer Encoding Method for Obtaining High-Quality Solutions of Quadratic Knapsack Problems on Solid-State Annealers
  Satoru Jimbo, Daiki Okonogi, Kota Ando, Thiem Van Chu, Jaehoon Yu, Masato Motomura, Kazushi Kawamura
  IEICE TRANSACTIONS on Information and Systems, Dec 2022

• A Fully-Parallel Annealing Algorithm with Autonomous Pinning Effect Control for Various Combinatorial Optimization Problems
  Daiki Okonogi, Satoru Jimbo, Kota Ando, Thiem Van Chu, Jaehoon Yu, Masato Motomura, Kazushi Kawamura
  IEICE TRANSACTIONS on Information and Systems, Dec 2023

• Amorphica: A Fully Connected Annealer Supporting Metamorphic Annealing and Scalable Multi Chip Integration
  Daiki Okonogi, Jaehoon Yu, Satoru Jimbo, Genta Inoue, Akira Hyodo, Kota Ando, Bruno Hideki Fukushima-Kimura, Ryota Yasudo, Thiem Van Chu, Masato Motomura, Kazushi Kawamura
  IEEE Access Volume 13, Oct 2025

• A Flip-Count-Based Dynamic Temperature Control Methodfor Constrained Combinatorial Optimization by Parallel Annealing Algorithms
  Genta Inoue, Daiki Okonogi, Thiem Van Chu, Jaehoon Yu, Masato Motomura, Kazushi Kawamura
  IEICE TRANSACTIONS on Information and Systems, Dec 2025

International Conference

• APC-SCA: A fully-parallel annealing algorithm with autonomous pinning effect control
  Daiki Okonogi, Satoru Jimbo, Kota Ando, Thiem Van Chu, Jaehoon Yu, Masato Motomura, Kazushi Kawamura
  IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW), Jun 2022

• Flexibly Controllable Dynamic Cooling Methods for Solid-State Annealing Processors to Improve Combinatorial Optimization Performance
  Genta Inoue, Daiki Okonogi, Thiem Van Chu, Jaehoon Yu, Masato Motomura, Kazushi Kawamura
  IEEE Symposium in Low-Power and High-Speed Chips (COOL CHIPS), Apr 2023

• Amorphica: 4-replica 512 fully connected spin 336MHz metamorphic annealer with programmable optimization strategy and compressed-spin-transfer multi-chip extension
  Kazushi Kawamura, Jaehoon Yu, Daiki Okonogi, Satoru Jimbo, Genta Inoue, Akira Hyodo, Ángel López García-Arias, Kota Ando, Bruno Hideki Fukushima-Kimura, Ryota Yasudo, Thiem Van Chu, Masato Motomura
  IEEE International Solid-State Circuits Conference (ISSCC), Feb 2023

• A Parallel-Trial Double-Update Annealing Processor for Enabling Highly-Effective Solution Search of Constrained Combinatorial Optimization Problems
  Akira Hyodo, Satoru Jimbo, Daiki Okonogi, Genta Inoue, Thiem Van Chu, Masato Motomura, Kazushi Kawamura
  2024 International Conference on Field Programmable Technology (ICFPT), Apr 2024