Publications

OTHERS (INTERNATIONAL)
Differentially Private Sampling from Distributions via Wasserstein Projection: Shokichi Takakura, Seng Pei Liew, Satoshi Hasegawa; arXiv.org (arXiv); May 12, 2026

CONFERENCE (INTERNATIONAL)
CASTELLA: Long Audio Dataset with Captions and Temporal Boundaries: Hokuto Munakata, Takehiro Imamura (Nagoya University), Taichi Nishimura, Tatsuya Komatsu; 2026 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2026); May 06, 2026

CONFERENCE (INTERNATIONAL)
Wave-Trainer-Fit: Neural Vocoder With Trainable Prior And Fixed-Point Iteration Towards High-Quality Speech Generation From SSL Features: Hien Ohnaka (Nara Institute of Science and Technology), Yuma Shirahata, Masaya Kawamura; 2026 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2026); May 05, 2026

CONFERENCE (INTERNATIONAL)
Duality-based Residual Estimation for Fully Offline Value-based Reinforcement Learning: Kohei Miyaguchi; The 29th International Conference on Artificial Intelligence and Statistics (AISTATS 2026); May 02, 2026

CONFERENCE (INTERNATIONAL)
FedDuA: Doubly Adaptive Federated Learning: Shokichi Takakura, Seng Pei Liew, Satoshi Hasegawa; The 29th International Conference on Artificial Intelligence and Statistics (AISTATS 2026); May 02, 2026

CONFERENCE (INTERNATIONAL)
Optimal Variance and Covariance Estimation under Differential Privacy in the Add-Remove Model and Beyond: Shokichi Takakura, Seng Pei Liew, Satoshi Hasegawa; The 29th International Conference on Artificial Intelligence and Statistics (AISTATS 2026); May 02, 2026

CONFERENCE (INTERNATIONAL)
3-Key-Input: Exploring the Theoretical Minimum Keys for Text Entry: Naoki Kimura; 2026 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2026); April 21, 2026

JOURNAL (DOMESTIC)
モデルマージによるドメイン特化検索モデルの構築: 佐々木泰河 (兵庫県立大), 山本岳洋 (兵庫県立大), 大島裕明 (兵庫県立大), 藤田澄男; 情報処理学会論文誌データベース (IPSJ-TOD); April 21, 2026

OTHERS (INTERNATIONAL)
Off-Policy Learning with Limited Supply: Koichi Tanaka (Keio University), Ren Kishimoto (Institute of Science Tokyo), Bushun Kawagishi (Meiji University), Yusuke Narita (Yale University), Yasuo Yamamoto, Nobuyuki Shimizu, Yuta Saito (Cornell University); arXiv.org (arXiv); March 19, 2026

OTHERS (INTERNATIONAL)
Indoor Space Authentication by ISS-based Keypoint Extraction from 3D Point Clouds: Yuki Yamada (Kyoto University), Daisuke Kotani (Kyoto University), Kota Tsubouchi, Hidehito Gomi, Yasuo Okabe (Kyoto Unversity); The 24th International Conference on Pervasive Computing and Communications (PerCom 2026); March 17, 2026

CONFERENCE (INTERNATIONAL)
Shape-N-Motion: Fine-Grained Hand Object Manipulation Recognition with Ultrasonic and IMU: Kaito Fujishige (Institute of Science Tokyo), Kota Tsubouchi, Yuuki Nishiyama (The University of Tokyo), Masamichi Shimosaka (Institute of Science Tokyo); The 24th International Conference on Pervasive Computing and Communications (PerCom 2026); March 17, 2026

CONFERENCE (DOMESTIC)
Optimal Variance and Covariance Estimation under Differential Privacy in the Add-Remove Model: Shokichi Takakura, Seng Pei Liew, Satoshi Hasegawa; 第18回データ工学と情報マネジメントに関するフォーラム（第24回日本データベース学会年次大会） (DEIM 2026); March 04, 2026

CONFERENCE (DOMESTIC)
金融ソーシャルメディア投稿における読み手が受け取る投資スタンスの分析: 細川蓮 (奈良先端科学技術大学院大学), 上田健太郎 (奈良先端科学技術大学院大学), 諏訪博彦 (奈良先端科学技術大学院大学), 小川祐樹 (東京都市大学), 梅原英一 (新潟国際情報大学), 坪内孝太, 安本慶一 (奈良先端科学技術大学院大学); 第5回計算社会科学会大会 (CSSJ2026); March 04, 2026

CONFERENCE (DOMESTIC)
金融掲示板の投稿に対する個人投資家の投資スタンス知覚とLLMによる再現性評価: 上田健太郎 (奈良先端科学技術大学院大学), 細川蓮 (奈良先端科学技術大学院大学), 諏訪博彦 (奈良先端科学技術大学院大学), 坪内孝太, 小川祐樹 (東京都市大学), 梅原英一 (新潟国際情報大学), 安本慶一 (奈良先端科学技術大学院大学); 第5回計算社会科学会大会 (CSSJ2026); March 04, 2026

CONFERENCE (DOMESTIC)
金融掲示板投稿を用いた市場予測モデルにおける重要投稿に基づいた説明生成手法の提案: 小手川康太 (奈良先端科学技術大学院大学), 上田健太郎 (奈良先端科学技術大学院大学), 細川蓮 (奈良先端科学技術大学院大学), 山崎公士 (立命館大学), 諏訪博彦 (奈良先端科学技術大学院大学), 小川祐樹 (東京都市大学), 梅原英一 (新潟国際情報大学), 坪内孝太, 安本慶一 (奈良先端科学技術大学院大学); 第5回計算社会科学会大会 (CSSJ2026); March 04, 2026

CONFERENCE (INTERNATIONAL)
Did the Writer Actually Visit the Location? Analysis of Location Reviews from Visit Experience: Aitaro Yamamoto (Nara Institute of Science and Technology), Hiroki Ouchi (Nara Institute of Science and Technology), Kota Tsubouchi, Tatsuo Yamashita, Ryo Tsujimoto (Nara Institute of Science and Technology), Yuki Matsuda (Okayama University/Nara Institute of Science and Technology), Hirohiko Suwa (Nara Institute of Science and Technology); International Joint Conference on Natural Language Processing & Asia-Pacific Chapter of the Association for Computational Linguistics, 2025 (IJCNLP-AACL 2025); February 19, 2026

OTHERS (INTERNATIONAL)
Inference-Aware Meta-Alignment of LLMs via Non-Linear GRPO: Shokichi Takakura, Akifumi Wachi, Rei Higuchi (The University of Tokyo/RIKEN AIP), Kohei Miyaguchi, Taiji Suzuki (The University of Tokyo/RIKEN AIP); arXiv.org (arXiv); February 03, 2026

OTHERS (INTERNATIONAL)
A Relative-Budget Theory for Reinforcement Learning with Verifiable Rewards in Large Language Model Reasoning: Akifumi Wachi, Hirota Kinoshita (Toyota Technological Institute at Chicago), Shokichi Takakura, Rei Higuchi (University of Tokyo/RIKEN AIP), Taiji Suzuki (University of Tokyo/RIKEN AIP); arXiv.org (arXiv); February 02, 2026

CONFERENCE (INTERNATIONAL)
Cost-Minimized Label-Flipping Poisoning Attack to LLM Alignment: Shigeki Kusaka (University of Tsukuba), Keita Saito (University of Tsukuba), Mikoto Kudo (University of Tsukuba/RIKEN AIP), Takumi Tanabe, Akifumi Wachi, Youhei Akimoto (University of Tsukuba/RIKEN AIP/Institute of Science Tokyo); The 40th Annual AAAI Conference on Artificial Intelligence (AAAI-26); January 24, 2026

OTHERS (INTERNATIONAL)
Validating Behavioral Proxies for Disease Risk Monitoring via Large-Scale E-commerce Data: Naomi Sasaya, Shigefumi Kishida (Anicom Insurance, Inc.), Ryo Kikuchi (Anicom Insurance, Inc.), Akira Tajima; arXiv.org (arXiv); January 21, 2026