Pattern Recognition of a Grasped Object by Unit-Vector Distribution. - Hiroaki Ozaki; Shigeaki Waku; Akira Mohri; Masaru Takata (IEEE Trans. Syst. Man Cybern., 1982)

Planning of collision-free movements of a manipulator with dynamic constraints. - Hiroaki Ozaki; Akira Mohri (Robotica, 1986)

Synthesis of a minimum-time manipulator trajectories with geometric path constraints using time scaling. - Hiroaki Ozaki; Akira Mohri (Robotica, 1988)

Planning of manipulator joint trajectories by an iterative method. - Motoji Yamamoto; Hiroaki Ozaki; Akira Mohri (Robotica, 1988)

Collision-free path generation for a mobile robot by an artificial transformation of obstacle spaces. - Hiroaki Ozaki; Tatsuyuki Shimadzu; Akira Mohri (Robotica, 1989)

Trajectory Planning of Manipulator Using Optimization of Uniform B-Spline. - Hiroaki Ozaki; Hua Chiu (J. Robotics Mechatronics, 1994)

Optimal B-spline joint trajectory generation for collision-free movements of a manipulator under dynamic constraints. - Hiroaki Ozaki; Chang-Jun Lin (ICRA, 1996)

Feedback gain tuning by the complex method- application examples for an inverted pendulum and flexible arm control. - Tetsuji Shimogawa; Chang-Jun Lin; Hiroaki Ozaki (Adv. Robotics, 1998)

Collision-Free Trajectory Planning for a Two-Dimensional Mobile Robot by Optimizing Continuous Curves. - Hiroaki Ozaki; Chang-Jun Lin (J. Robotics Mechatronics, 1998)

A feedback control gain tuning for mechatronic systems by iterative trials. - Hiroaki Ozaki; Tetsuji Shimogawa; Chang-Jun Lin (IROS, 2001)

Motion Planning of Under-Actuated Mechanical Systems: Convergence Analysis for Iterative Methods. - Makoto Iwamura; Hiroaki Ozaki; Akira Mohri (ICRA, 2002)

Wireless operations for 13.56-MHz band RFID tag using amorphous oxide TFTs. - Hiroaki Ozaki; Tetsufumi Kawamura; Hironori Wakana; Takanori Yamazoe; Hiroyuki Uchiyama (IEICE Electron. Express, 2011)

Developping Confocal Laser Microscope and fitting adjacent layer images. - Hiroaki Ozaki; Toshiyuki Hirano; Takaya Yamada; Tsukasa Kato; Ryo Taguchi; Masahiro Hoguro; Taizo Umezaki (MHS, 2012)

Production Estimation for Shale Wells with Sentiment-Based Features from Geology Reports. - Bin Tong; Hiroaki Ozaki; Makoto Iwayama; Yoshiyuki Kobayashi; Anshuman Sahu; Ravigopal Vennelakanti (ICDM Workshops, 2015)

Information Retrieval Boosted by Category for Troubleshooting Search System. - Bin Tong; Toshihiko Yanase; Hiroaki Ozaki; Makoto Iwayama (GSB@SIGIR, 2015)

Hitachi at MRP 2019: Unified Encoder-to-Biaffine Network for Cross-Framework Meaning Representation Parsing. - Yuta Koreeda; Gaku Morio; Terufumi Morishita; Hiroaki Ozaki; Kohsuke Yanai (CoNLL Shared Task, 2019)

Split First and Then Rephrase: Hierarchical Generation for Sentence Simplification. - Mengru Wang; Hiroaki Ozaki; Yuta Koreeda; Kohsuke Yanai (PACLING, 2019)

Towards Better Non-Tree Argument Mining: Proposition-Level Biaffine Parsing with Task-Specific Parameterization. - Gaku Morio; Hiroaki Ozaki; Terufumi Morishita; Yuta Koreeda; Kohsuke Yanai (ACL, 2020)

Hitachi at MRP 2020: Text-to-Graph-Notation Transducer. - Hiroaki Ozaki; Gaku Morio; Yuta Koreeda; Terufumi Morishita; Toshinori Miyoshi (CoNLL Shared Task, 2020)

Hitachi at SemEval-2020 Task 10: Emphasis Distribution Fusion on Fine-Tuned Language Models. - Gaku Morio; Terufumi Morishita; Hiroaki Ozaki; Toshinori Miyoshi (SemEval@COLING, 2020)

Hitachi at SemEval-2020 Task 11: An Empirical Study of Pre-Trained Transformer Family for Propaganda Detection. - Gaku Morio; Terufumi Morishita; Hiroaki Ozaki; Toshinori Miyoshi (SemEval@COLING, 2020)

Hitachi at SemEval-2020 Task 8: Simple but Effective Modality Ensemble for Meme Emotion Recognition. - Terufumi Morishita; Gaku Morio; Shota Horiguchi; Hiroaki Ozaki; Toshinori Miyoshi (SemEval@COLING, 2020)

Hitachi at SemEval-2020 Task 3: Exploring the Representation Spaces of Transformers for Human Sense Word Similarity. - Terufumi Morishita; Gaku Morio; Hiroaki Ozaki; Toshinori Miyoshi (SemEval@COLING, 2020)

Hitachi at SemEval-2020 Task 7: Stacking at Scale with Heterogeneous Language Models for Humor Recognition. - Terufumi Morishita; Gaku Morio; Hiroaki Ozaki; Toshinori Miyoshi (SemEval@COLING, 2020)

Hitachi at SemEval-2020 Task 12: Offensive Language Identification with Noisy Labels Using Statistical Sampling and Post-Processing. - Manikandan Ravikiran; Amin Ekant Muljibhai; Toshinori Miyoshi; Hiroaki Ozaki; Yuta Koreeda; Sakata Masayuki (SemEval@COLING, 2020)

Three-Dimensional Imaging of Pulmonary Fibrotic Foci at the Alveolar Scale Using Tissue-Clearing Treatment with Staining Techniques of Extracellular Matrix. - Kohei Togami; Hiroaki Ozaki; Yuki Yumita; Anri Kitayama; Hitoshi Tada; Sumio Chono (Int. J. Biomed. Imaging, 2020)

i-Parser: Interactive Parser Development Kit for Natural Language Processing. - Gaku Morio; Hiroaki Ozaki; Yuta Koreeda; Terufumi Morishita; Toshinori Miyoshi (AAAI, 2021)

Project-then-Transfer: Effective Two-stage Cross-lingual Transfer for Semantic Dependency Parsing. - Hiroaki Ozaki; Gaku Morio; Terufumi Morishita; Toshinori Miyoshi (EACL, 2021)

Team Hitachi @ AutoMin 2021: Reference-free Automatic Minuting Pipeline with Argument Structure Construction over Topic-based Summarization. - Atsuki Yamaguchi; Gaku Morio; Hiroaki Ozaki; Ken-Ichi Yokote; Kenji Nagamatsu (CoRR, 2021)

Rethinking Fano's Inequality in Ensemble Learning. - Terufumi Morishita; Gaku Morio; Shota Horiguchi; Hiroaki Ozaki; Nobuo Nukaga (ICML, 2022)

Hitachi at SemEval-2022 Task 10: Comparing Graph- and Seq2Seq-based Models Highlights Difficulty in Structured Sentiment Analysis. - Gaku Morio; Hiroaki Ozaki; Atsuki Yamaguchi; Yasuhiro Sogawa (SemEval@NAACL, 2022)

Hitachi at SemEval-2022 Task 2: On the Effectiveness of Span-based Classification Approaches for Multilingual Idiomaticity Detection. - Atsuki Yamaguchi; Gaku Morio; Hiroaki Ozaki; Yasuhiro Sogawa (SemEval@NAACL, 2022)

End-to-end Argument Mining with Cross-corpora Multi-task Learning. - Gaku Morio; Hiroaki Ozaki; Terufumi Morishita; Kohsuke Yanai (Trans. Assoc. Comput. Linguistics, 2022)

How does the task complexity of masked pretraining objectives affect downstream performance? - Atsuki Yamaguchi; Hiroaki Ozaki; Terufumi Morishita; Gaku Morio; Yasuhiro Sogawa (ACL (Findings), 2023)

Controlling keywords and their positions in text generation. - Yuichi Sasazawa; Terufumi Morishita; Hiroaki Ozaki; Osamu Imaichi; Yasuhiro Sogawa (INLG, 2023)

Hitachi at SemEval-2023 Task 3: Exploring Cross-lingual Multi-task Strategies for Genre and Framing Detection in Online News. - Yuta Koreeda; Ken-Ichi Yokote; Hiroaki Ozaki; Atsuki Yamaguchi; Masaya Tsunokake; Yasuhiro Sogawa (SemEval@ACL, 2023)

Hitachi at SemEval-2023 Task 4: Exploring Various Task Formulations Reveals the Importance of Description Texts on Human Values. - Masaya Tsunokake; Atsuki Yamaguchi; Yuta Koreeda; Hiroaki Ozaki; Yasuhiro Sogawa (SemEval@ACL, 2023)

Team Hitachi at SemEval-2023 Task 3: Exploring Cross-lingual Multi-task Strategies for Genre and Framing Detection in Online News. - Yuta Koreeda; Ken-Ichi Yokote; Hiroaki Ozaki; Atsuki Yamaguchi; Masaya Tsunokake; Yasuhiro Sogawa (CoRR, 2023)

Error Correction of Japanese Character-Recognition in Answers to Writing-Type Questions Using T5. - Rina Suzuki; Hisao Usui; Hiroaki Ozaki; Hung Tuan Nguyen; Kanako Komiya; Tsunenori Ishioka; Masaki Nakagawa (DAS, 2024)

Analytical Methodology and a Simulator for ESG-Financial Indicators Based on Causal Hypothesis Graphs. - Hiroaki Ozaki; Naoya Tanahashi; Norio Masuda; Kazuo Yamada; Masahito Kato; Nobuyuki Isagawa (STAI@IJCAI, 2024)

Investigating the Influence of Automated Transcription Error Correction on Automated Grading for Handwritten Japanese Answers. - Rina Suzuki; Takahiro Saito; Hisao Usui; Hiroaki Ozaki; Hung Tuan Nguyen; Kanako Komiya; Tsunenori Ishioka; Masaki Nakagawa (AIED (6), 2025)

Can Visual Encoder Learn to See Arrows? - Naoyuki Terashita; Yusuke Tozaki; Hideaki Omote; Congkha Nguyen; Ryosuke Nakamoto; Yuta Koreeda; Hiroaki Ozaki (CoRR, 2025)