Tatsuya Hiraoka

According to our database, Tatsuya Hiraoka authored at least 27 papers between 2019 and 2025.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2025

Understanding and Controlling Repetition Neurons and Induction Heads in In-Context Learning.

Nhi Hoai Doan, Tatsuya Hiraoka, Kentaro Inui

CoRR, July, 2025

Spelling-out is not Straightforward: LLMs' Capability of Tokenization from Token to Characters.

Tatsuya Hiraoka, Kentaro Inui

CoRR, June, 2025

Bit-level BPE: Below the byte boundary.

Sangwhan Moon, Tatsuya Hiraoka, Naoaki Okazaki

CoRR, June, 2025

Do LLMs Need to Think in One Language? Correlation between Latent Language and Task Performance.

Shintaro Ozaki, Tatsuya Hiraoka, Hiroto Otake, Hiroki Ouchi, Masaru Isonuma, Benjamin Heinzerling, Kentaro Inui, Taro Watanabe, Yusuke Miyao, Yohei Oseki, Yu Takagi

CoRR, May, 2025

Investigating Neurons and Heads in Transformer-based LLMs for Typographical Errors.

Kohei Tsuji, Tatsuya Hiraoka, Yuchang Cheng, Eiji Aramaki, Tomoya Iwakura

CoRR, February, 2025

Number Representations in LLMs: A Computational Parallel to Human Perception.

H. V. AlquBoj, Hilal AlQuabeh, Velibor Bojkovic, Tatsuya Hiraoka, Ahmed Oumar El-Shangiti, Munachiso Nwadike, Kentaro Inui

CoRR, February, 2025

RECALL: Library-Like Behavior In Language Models is Enhanced by Self-Referencing Causal Cycles.

Munachiso Nwadike, Zangir Iklassov, Toluwani Aremu, Tatsuya Hiraoka, Velibor Bojkovic, Benjamin Heinzerling, Hilal Alqaubeh, Martin Takác, Kentaro Inui

CoRR, January, 2025

Repetition Neurons: How Do Language Models Produce Repetitions?

Tatsuya Hiraoka, Kentaro Inui

Proceedings of the 2025 Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics: Human Language Technologies, 2025

The Geometry of Numerical Reasoning: Language Models Compare Numeric Properties in Linear Subspaces.

Ahmed Oumar El-Shangiti, Tatsuya Hiraoka, Hilal AlQuabeh, Benjamin Heinzerling, Kentaro Inui

Proceedings of the 2025 Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics: Human Language Technologies, 2025

SubRegWeigh: Effective and Efficient Annotation Weighing with Subword Regularization.

Kohei Tsuji, Tatsuya Hiraoka, Yuchang Cheng, Tomoya Iwakura

Proceedings of the 31st International Conference on Computational Linguistics, 2025

Library-Like Behavior In Language Models is Enhanced by Self-Referencing Causal Cycles.

Munachiso Nwadike, Zangir Iklassov, Toluwani Aremu, Tatsuya Hiraoka, Benjamin Heinzerling, Velibor Bojkovic, Hilal AlQuabeh, Martin Takác, Kentaro Inui

Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), 2025

2024

LLM-jp: A Cross-organizational Project for the Research and Development of Fully Open Japanese LLMs.

Akiko Aizawa, Eiji Aramaki, Bowen Chen, Fei Cheng, Hiroyuki Deguchi, Rintaro Enomoto, Kazuki Fujii, Kensuke Fukumoto, Takuya Fukushima, Namgi Han, Yuto Harada, Chikara Hashimoto, Tatsuya Hiraoka, Shohei Hisada, Sosuke Hosokawa, Lu Jie, Keisuke Kamata, Teruhito Kanazawa, Hiroki Kanezashi, Hiroshi Kataoka, Satoru Katsumata, Daisuke Kawahara, Seiya Kawano, Atsushi Keyaki, Keisuke Kiryu, Hirokazu Kiyomaru, Takashi Kodama, Takahiro Kubo, Yohei Kuga, Ryoma Kumon, Shuhei Kurita, Sadao Kurohashi, Conglong Li, Taiki Maekawa, Hiroshi Matsuda, Yusuke Miyao, Kentaro Mizuki, Sakae Mizuki, Yugo Murawaki, Ryo Nakamura, Taishi Nakamura, Kouta Nakayama, Tomoka Nakazato, Takuro Niitsuma, Jiro Nishitoba, Yusuke Oda, Hayato Ogawa, Takumi Okamoto, Naoaki Okazaki, Yohei Oseki, Shintaro Ozaki, Koki Ryu, Rafal Rzepka, Keisuke Sakaguchi, Shota Sasaki, Satoshi Sekine, Kohei Suda, Saku Sugawara, Issa Sugiura, Hiroaki Sugiyama, Hisami Suzuki, Jun Suzuki, Toyotaro Suzumura, Kensuke Tachibana, Yu Takagi, Kyosuke Takami, Koichi Takeda, Masashi Takeshita, Masahiro Tanaka, Kenjiro Taura, Arseny Tolmachev, Nobuhiro Ueda, Zhen Wan, Shuntaro Yada, Sakiko Yahata, Yuya Yamamoto, Yusuke Yamauchi, Hitomi Yanaka, Rio Yokota, Koichiro Yoshino

CoRR, 2024

Constructing Multilingual Visual-Text Datasets Revealing Visual Multilingual Ability of Vision Language Models.

Jesse Atuhurra, Iqra Ali, Tatsuya Hiraoka, Hidetaka Kamigaito, Tomoya Iwakura, Taro Watanabe

CoRR, 2024

An Analysis of BPE Vocabulary Trimming in Neural Machine Translation.

Marco Cognetta, Tatsuya Hiraoka, Naoaki Okazaki, Rico Sennrich, Yuval Pinter

CoRR, 2024

Knowledge of Pretrained Language Models on Surface Information of Tokens.

Tatsuya Hiraoka, Naoaki Okazaki

CoRR, 2024

2023

Tokenization Tractability for Human and Machine Learning Model: An Annotation Study.

Tatsuya Hiraoka, Tomoya Iwakura

CoRR, 2023

Downstream Task-Oriented Neural Tokenizer Optimization with Vocabulary Restriction as Post Processing.

Tatsuya Hiraoka, Tomoya Iwakura

CoRR, 2023

Vocabulary Replacement in SentencePiece for Domain Adaptation.

Teruno Kajiura, Shiho Takano, Tatsuya Hiraoka, Kimio Kuramitsu

Proceedings of the 37th Pacific Asia Conference on Language, 2023

2022

Recurrent Neural Hidden Markov Model for High-order Transition.

Tatsuya Hiraoka, Sho Takase, Kei Uchiumi, Atsushi Keyaki, Naoaki Okazaki

ACM Trans. Asian Low Resour. Lang. Inf. Process., 2022

MaxMatch-Dropout: Subword Regularization for WordPiece.

Tatsuya Hiraoka

Proceedings of the 29th International Conference on Computational Linguistics, 2022

Single Model Ensemble for Subword Regularized Models in Low-Resource Machine Translation.

Sho Takase, Tatsuya Hiraoka, Naoaki Okazaki

Proceedings of the Findings of the Association for Computational Linguistics: ACL 2022, 2022

Word-level Perturbation Considering Word Length and Compositional Subwords.

Tatsuya Hiraoka, Sho Takase, Kei Uchiumi, Atsushi Keyaki, Naoaki Okazaki

Proceedings of the Findings of the Association for Computational Linguistics: ACL 2022, 2022

Joint Entity and Relation Extraction Based on Table Labeling Using Convolutional Neural Networks.

Youmi Ma, Tatsuya Hiraoka, Naoaki Okazaki

Proceedings of the Sixth Workshop on Structured Prediction for NLP, 2022

2021

Joint Optimization of Tokenization and Downstream Model.

Tatsuya Hiraoka, Sho Takase, Kei Uchiumi, Atsushi Keyaki, Naoaki Okazaki

Proceedings of the Findings of the Association for Computational Linguistics: ACL/IJCNLP 2021, 2021

2020

Named Entity Recognition and Relation Extraction using Enhanced Table Filling by Contextualized Representations.

Youmi Ma, Tatsuya Hiraoka, Naoaki Okazaki

CoRR, 2020

Optimizing Word Segmentation for Downstream Task.

Tatsuya Hiraoka, Sho Takase, Kei Uchiumi, Atsushi Keyaki, Naoaki Okazaki

Proceedings of the Findings of the Association for Computational Linguistics: EMNLP 2020, 2020

2019

Stochastic Tokenization with a Language Model for Neural Text Classification.

Tatsuya Hiraoka, Hiroyuki Shindo, Yuji Matsumoto

Proceedings of the 57th Conference of the Association for Computational Linguistics, 2019