Discovery of Exogenous Variables in Data with More Variables Than Observations. - Yasuhiro Sogawa; Shohei Shimizu; Aapo Hyvärinen; Takashi Washio; Teppei Shimamura; Seiya Imoto (ICANN (1), 2010)

An experimental comparison of linear non-Gaussian causal discovery methods and their variants. - Yasuhiro Sogawa; Shohei Shimizu; Yoshinobu Kawahara; Takashi Washio (IJCNN, 2010)

Online heterogeneous mixture modeling with marginal and copula selection. - Ryohei Fujimaki; Yasuhiro Sogawa; Satoshi Morinaga (KDD, 2011)

DirectLiNGAM: A Direct Method for Learning a Linear Non-Gaussian Structural Equation Model. - Shohei Shimizu; Takanori Inazumi; Yasuhiro Sogawa; Aapo Hyvärinen; Yoshinobu Kawahara; Takashi Washio; Patrik O. Hoyer; Kenneth Bollen (J. Mach. Learn. Res., 2011)

Estimating exogenous variables in data with more variables than observations. - Yasuhiro Sogawa; Shohei Shimizu; Teppei Shimamura; Aapo Hyvärinen; Takashi Washio; Seiya Imoto (Neural Networks, 2011)

Robust Active Learning for Linear Regression via Density Power Divergence. - Yasuhiro Sogawa; Tsuyoshi Ueno; Yoshinobu Kawahara; Takashi Washio (ICONIP (3), 2012)

Active learning for noisy oracle via density power divergence. - Yasuhiro Sogawa; Tsuyoshi Ueno; Yoshinobu Kawahara; Takashi Washio (Neural Networks, 2013)

An Interactive Greedy Approach to Group Sparsity in High Dimensions. - Wei Qian; Wending Li; Yasuhiro Sogawa; Ryohei Fujimaki; Xitong Yang; Ji Liu (Technometrics, 2019)

Reducing Offensive Replies in Open Domain Dialogue Systems. - Naokazu Uchida; Takeshi Homma; Makoto Iwayama; Yasuhiro Sogawa (INTERSPEECH, 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)

Unsupervised Domain Adaptation on Question-Answering System with Conversation Data. - Amalia Istiqlali Adiba; Takeshi Homma; Yasuhiro Sogawa (SIGDIAL, 2022)

How do different tokenizers perform on downstream tasks in scriptio continua languages?: A case study in Japanese. - Takuro Fujii; Koki Shibata; Atsuki Yamaguchi; Terufumi Morishita; Yasuhiro Sogawa (ACL (student), 2023)

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)

LARCH: Large Language Model-based Automatic Readme Creation with Heuristics. - Yuta Koreeda; Terufumi Morishita; Osamu Imaichi; Yasuhiro Sogawa (CIKM, 2023)

Learning Deductive Reasoning from Synthetic Corpus based on Formal Logic. - Terufumi Morishita; Gaku Morio; Atsuki Yamaguchi; Yasuhiro Sogawa (ICML, 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)

Text Retrieval with Multi-Stage Re-Ranking Models. - Yuichi Sasazawa; Ken-Ichi Yokote; Osamu Imaichi; Yasuhiro Sogawa (CoRR, 2023)

CHICOT: A Developer-Assistance Toolkit for Code Search with High-Level Contextual Information. - Terufumi Morishita; Yuta Koreeda; Atsuki Yamaguchi; Gaku Morio; Osamu Imaichi; Yasuhiro Sogawa (AAAI, 2024)

JFLD: A Japanese Benchmark for Deductive Reasoning Based on Formal Logic. - Terufumi Morishita; Atsuki Yamaguchi; Gaku Morio; Hikaru Tomonari; Osamu Imaichi; Yasuhiro Sogawa (LREC/COLING, 2024)

Enhancing Reasoning Capabilities of LLMs via Principled Synthetic Logic Corpus. - Terufumi Morishita; Gaku Morio; Atsuki Yamaguchi; Yasuhiro Sogawa (NeurIPS, 2024)

Layout Generation Agents with Large Language Models. - Yuichi Sasazawa; Yasuhiro Sogawa (CoRR, 2024)

Web Page Classification using LLMs for Crawling Support. - Yuichi Sasazawa; Yasuhiro Sogawa (CoRR, 2025)

A Nested Watermark for Large Language Models. - Koichi Nagatsuka; Terufumi Morishita; Yasuhiro Sogawa (CoRR, 2025)