Publications

CONFERENCE (INTERNATIONAL)
Retrieval of LoRA Models based on Layer-Wise Weight Embedding without Metadata: Yuro Kanada (Shizuoka University), Yuma Oe (Shizuoka University), Huu-Long Pham (University of Tsukuba), Makoto P. Kato (University of Tsukuba), Hiroaki Ohshima (University of Hyogo), Sumio Fujita, Yoshiyuki Shoji (Shizuoka University); The 16th ACM International Conference on Multimedia Retrieval (ICMR 2026); June 15, 2026

CONFERENCE (INTERNATIONAL)
Which LoRA Should Be Merged Next? Retrieving an Additional LoRA from a Target Image: Daichi Sugita (Shizuoka University), Huu-Long Pham (University of Hyogo), Makoto P. Kato (University of Tsukuba), Hiroaki Ohshima (University of Hyogo), Sumio Fujita, Yoshiyuki Shoji (Shizuoka University); The 16th ACM International Conference on Multimedia Retrieval (ICMR 2026); June 15, 2026

CONFERENCE (INTERNATIONAL)
Causal Motion Diffusion Models for Autoregressive Motion Generation: Qing Yu, Akihisa Watanabe (Waseda University), Kent Fujiwara; The IEEE/CVF Conference on Computer Vision and Pattern Recognition 2026 (CVPR 2026); June 07, 2026

CONFERENCE (INTERNATIONAL)
ProjFlow: Projection Sampling with Flow Matching for Zero‑Shot Exact Spatial Motion Control: Akihisa Watanabe (Waseda University), Qing Yu, Edgar Simo-Serra (Waseda University), Kent Fujiwara; The IEEE/CVF Conference on Computer Vision and Pattern Recognition 2026 (CVPR 2026); June 05, 2026

CONFERENCE (INTERNATIONAL)
CC-G2PNP: Streaming Grapheme-to-Phoneme and Prosody with Conformer-CTC for Unsegmented Languages: Yuma Shirahata, Ryuichi Yamamoto; 2026 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2026); May 07, 2026

CONFERENCE (INTERNATIONAL)
Retrieval-augmented Diffusion Language Model for Generative Commonsense Reasoning: Yubo Fang (University of Tsukuba), Hai-Tao Yu (University of Tsukuba), Hideo Joho (University of Tsukuba), Sumio Fujita; The 31st International Conference on Database Systems for Advanced Applications (DASFAA 2026); April 27, 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

CONFERENCE (INTERNATIONAL)
SCAdapter: Content-Style Disentanglement for Diffusion Style Transfer: Luan Thanh Trinh, Kenji Doi, Atsuki Osanai; The IEEE/CVF Winter Conference on Applications of Computer Vision 2026 (WACV 2026); March 10, 2026

CONFERENCE (DOMESTIC)
長文脈 LLM によるゼロショット文章ランキングにおけるランキング手法とモデル規模が有効性・効率性に与える影響: 沖本祐典, 中野佑哉, 官上大輔; 言語処理学会第32回年次大会 (NLP2026); March 10, 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 (DOMESTIC)
モデルのトークンエンベディングによる目標画像を生成するためにマージすべきLoRAの検索: 杉田大知 (静岡大学), ファムフーロン (兵庫県立大), 大島裕明 (兵庫県立大), 藤田澄男, 莊司慶行 (静岡大学); 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); February 28, 2026

CONFERENCE (DOMESTIC)
画風変換LoRAの内部パラメータによる変換特徴を考慮したモデルの埋め込み表現の獲得: 金田悠路 (静岡大学), 大江優真 (静岡大学), ファムフーロン (兵庫県立大), 加藤誠 (筑波大学/国立情報学研究所), 大島裕明 (兵庫県立大), 藤田澄男, 莊司慶行 (静岡大学); 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); February 28, 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

JOURNAL (INTERNATIONAL)
Constant Rate Scheduling: A General Framework for Optimizing Diffusion Noise Schedule via Distributional Change: Shuntaro Okada, Kenji Doi, Ryota Yoshihashi, Hirokatsu Kataoka, Tomohiro Tanaka; Transactions on Machine Learning Research (TMLR); January 30, 2026

JOURNAL (DOMESTIC)
Image Style Transfer Model Retrieval using Transformer Encoder and Learning to Rank: Huu-Long Pham (Hyougo university), Yoshiyuki Shoji (Shizuoka university), Sumio Fujita, Hiroaki Ohshima (Hyougo university); 情報処理学会論文誌データベース (IPSJ-TOD); January 26, 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

CONFERENCE (INTERNATIONAL)
A Provable Approach for End-to-End Safe Reinforcement Learning: Akifumi Wachi, Kohei Miyaguchi, Takumi Tanabe, Rei Sato, Youhei Akimoto (University of Tsukuba, RIKEN AIP); The Thirty-Ninth Annual Conference on Neural Information Processing Systems (NeurIPS 2025); December 05, 2025

CONFERENCE (INTERNATIONAL)
Offline Guarded Safe Reinforcement Learning for Medical Treatment Optimization Strategies: Runze Yan (Emory University), Xun Shen (Tokyo University of Agriculture and Technology), Akifumi Wachi, Sebastien Gros (Norwegian University of Science and Technology), Anni Zhao (Emory University), Xiao Hu (Emory University); The Thirty-Ninth Annual Conference on Neural Information Processing Systems (NeurIPS 2025); December 03, 2025