Colorimetric Precision in Scanner Calibration Using Matrices. - Hideaki Haneishi; Tsutomu Hirao; Akihiro Shimazu; Yoichi Miyake (CIC, 1995)

NTT DATA at TREC-7: System Approach for Ad-Hoc and Filtering. - Hiroyuke Nakajima; Toru Takaki; Tsutomu Hirao; Akira Kitauchi (TREC, 1998)

Text Summarization based on Hanning Window and Dependency Strucuture Analysis. - Tsutomu Hirao; Mamiko Hatayama; Satoshi Yamada; Kazuhiro Takeuchi (NTCIR, 2001)

Extracting Important Sentences with Support Vector Machines. - Tsutomu Hirao; Hideki Isozaki; Eisaku Maeda; Yuji Matsumoto 001 (COLING, 2002)

NTT/NAIST's Text Summarization Systems for TSC-2. - Tsutomu Hirao; Kazuhiro Takeuchi; Hideki Isozaki; Yutaka Sasaki; Eisaku Maeda (NTCIR, 2002)

NTT's QA Systems for NTCIR QAC-1. - Yutaka Sasaki; Hideki Isozaki; Tsutomu Hirao; Koji Kokuryou; Eisaku Maeda (NTCIR, 2002)

A Machine Learning Approach for QA and Novelty Tracks: NTT System Description. - Hideto Kazawa; Tsutomu Hirao; Hideki Isozaki; Eisaku Maeda (TREC, 2002)

Hierarchical Directed Acyclic Graph Kernel: Methods for Structured Natural Language Data. - Jun Suzuki 001; Tsutomu Hirao; Yutaka Sasaki; Eisaku Maeda (ACL, 2003)

Japanese Zero Pronoun Resolution based on Ranking Rules and Machine Learning. - Hideki Isozaki; Tsutomu Hirao (EMNLP, 2003)

Experiments in TREC 2003 Genomics Track at NTT. - Hirotoshi Taira; Tomonori Izumitani; Tsutomu Hirao; Hideki Isozaki; Hideto Kazawa; Eisaku Maeda (TREC, 2003)

Corpus and Evaluation Measures for Multiple Document Summarization with Multiple Sources. - Tsutomu Hirao; Takahiro Fukusima; Manabu Okumura; Chikashi Nobata; Hidetsugu Nanba (COLING, 2004)

Dependency-based Sentence Alignment for Multiple Document Summarization. - Tsutomu Hirao; Jun Suzuki 001; Hideki Isozaki; Eisaku Maeda (COLING, 2004)

A Deterministic Word Dependency Analyzer Enhanced With Preference Learning. - Hideki Isozaki; Hideto Kazawa; Tsutomu Hirao (COLING, 2004)

Text Summarization Challenge 3 - Text Summarization Evaluation at NTCIR Workshop. - Tsutomu Hirao; Manabu Okumura; Takahiro Fukusima; Hidetsugu Nanba (NTCIR, 2004)

Text Summarization Challenge 2 text summarization evaluation at NTCIR workshop 3. - Manabu Okumura; Takahiro Fukusima; Hidetsugu Nanba; Tsutomu Hirao (SIGIR Forum, 2004)

Kernel-based Approach for Automatic Evaluation of Natural Language Generation Technologies: Application to Automatic Summarization. - Tsutomu Hirao; Manabu Okumura; Hideki Isozaki (HLT/EMNLP, 2005)

Order SVM: a kernel method for order learning based on generalized order statistics. - Hideto Kazawa; Tsutomu Hirao; Eisaku Maeda (Syst. Comput. Jpn., 2005)

Identifying Bloggers' Residential Areas. - Norihito Yasuda; Tsutomu Hirao; Jun Suzuki 001; Hideki Isozaki (AAAI Spring Symposium: Computational Approaches to Analyzing Weblogs, 2006)

Supervised automatic evaluation for summarization with voted regression model. - Tsutomu Hirao; Manabu Okumura; Norihito Yasuda; Hideki Isozaki (Inf. Process. Manag., 2007)

A Syntax-Free Approach to Japanese Sentence Compression. - Tsutomu Hirao; Jun Suzuki 001; Hideki Isozaki (ACL/IJCNLP, 2009)

Automatic Evaluation of Translation Quality for Distant Language Pairs. - Hideki Isozaki; Tsutomu Hirao; Kevin Duh; Katsuhito Sudoh; Hajime Tsukada (EMNLP, 2010)

Divide and Translate: Improving Long Distance Reordering in Statistical Machine Translation. - Katsuhito Sudoh; Kevin Duh; Hajime Tsukada; Tsutomu Hirao; Masaaki Nagata (WMT@ACL, 2010)

Transfer Learning for Multiple-Domain Sentiment Analysis - Identifying Domain Dependent/Independent Word Polarity. - Yasuhisa Yoshida; Tsutomu Hirao; Tomoharu Iwata; Masaaki Nagata; Yuji Matsumoto 001 (AAAI, 2011)

Coreference based event-argument relation extraction on biomedical text. - Katsumasa Yoshikawa; Sebastian Riedel 001; Tsutomu Hirao; Masayuki Asahara; Yuji Matsumoto 001 (J. Biomed. Semant., 2011)

Sentence Compression with Semantic Role Constraints. - Katsumasa Yoshikawa; Ryu Iida; Tsutomu Hirao; Manabu Okumura (ACL (2), 2012)

Text Summarization Model based on Redundancy-Constrained Knapsack Problem. - Hitoshi Nishikawa; Tsutomu Hirao; Toshiro Makino; Yoshihiro Matsuo (COLING (Posters), 2012)

A Query-Focused Summarization Method that Guarantees the Inclusion of Query Words. - Norihito Yasuda; Masaaki Nishino; Tsutomu Hirao; Jun Suzuki 001; Ryoji Kataoka (DEXA Workshops, 2012)

Creating Stories: Social Curation of Twitter Messages. - Kevin Duh; Tsutomu Hirao; Akisato Kimura; Katsuhiko Ishiguro; Tomoharu Iwata; Ching-man Au Yeung (ICWSM, 2012)

Unsupervised Cluster Matching via Probabilistic Latent Variable Models. - Tomoharu Iwata; Tsutomu Hirao; Naonori Ueda (AAAI, 2013)

Latent Semantic Matching: Application to Cross-language Text Categorization without Alignment Information. - Tsutomu Hirao; Tomoharu Iwata; Masaaki Nagata (ACL (2), 2013)

Text Summarization while Maximizing Multiple Objectives with Lagrangian Relaxation. - Masaaki Nishino; Norihito Yasuda; Tsutomu Hirao; Jun Suzuki 001; Masaaki Nagata (ECIR, 2013)

Sub-sentence Extraction Based on Combinatorial Optimization. - Norihito Yasuda; Masaaki Nishino; Tsutomu Hirao; Masaaki Nagata (ECIR, 2013)

Single-Document Summarization as a Tree Knapsack Problem. - Tsutomu Hirao; Yasuhisa Yoshida; Masaaki Nishino; Norihito Yasuda; Masaaki Nagata (EMNLP, 2013)

Lagrangian Relaxation for Scalable Text Summarization while Maximizing Multiple Objectives. - Masaaki Nishino; Norihito Yasuda; Tsutomu Hirao; Jun Suzuki 001; Masaaki Nagata (Inf. Media Technol., 2013)

Single Document Summarization based on Nested Tree Structure. - Yuta Kikuchi; Tsutomu Hirao; Hiroya Takamura; Manabu Okumura; Masaaki Nagata (ACL (2), 2014)

Learning to Generate Coherent Summary with Discriminative Hidden Semi-Markov Model. - Hitoshi Nishikawa; Kazuho Arita; Katsumi Tanaka; Tsutomu Hirao; Toshiro Makino; Yoshihiro Matsuo (COLING, 2014)

Dependency-based Discourse Parser for Single-Document Summarization. - Yasuhisa Yoshida; Jun Suzuki 001; Tsutomu Hirao; Masaaki Nagata (EMNLP, 2014)

SCT-D3 at the NTCIR-11 MedNLP-2 Task. - Akinori Fujino; Jun Suzuki 001; Tsutomu Hirao; Hisashi Kurasawa; Katsuyoshi Hayashi (NTCIR, 2014)

Dependency-based Automatic Enumeration of Semantically Equivalent Word Orders for Evaluating Japanese Translations. - Hideki Isozaki; Natsume Kouchi; Tsutomu Hirao (WMT@ACL, 2014)

Creating Stories from Socially Curated Microblog Messages. - Akisato Kimura; Kevin Duh; Tsutomu Hirao; Katsuhiko Ishiguro; Tomoharu Iwata; Albert Au Yeung (IEICE Trans. Inf. Syst., 2014)

Hybrid Approach to PDTB-styled Discourse Parsing for CoNLL-2015. - Yasuhisa Yoshida; Katsuhiko Hayashi 001; Tsutomu Hirao; Masaaki Nagata (CoNLL Shared Task, 2015)

A Dynamic Programming Algorithm for Tree Trimming-based Text Summarization. - Masaaki Nishino; Norihito Yasuda; Tsutomu Hirao; Shin-ichi Minato; Masaaki Nagata (HLT-NAACL, 2015)

Summarizing a Document by Trimming the Discourse Tree. - Tsutomu Hirao; Masaaki Nishino; Yasuhisa Yoshida; Jun Suzuki 001; Norihito Yasuda; Masaaki Nagata (IEEE ACM Trans. Audio Speech Lang. Process., 2015)

Summarization Based on Task-Oriented Discourse Parsing. - Xun Wang; Yasuhisa Yoshida; Tsutomu Hirao; Katsuhito Sudoh; Masaaki Nagata (IEEE ACM Trans. Audio Speech Lang. Process., 2015)

Exploring Text Links for Coherent Multi-Document Summarization. - Xun Wang; Masaaki Nishino; Tsutomu Hirao; Katsuhito Sudoh; Masaaki Nagata (COLING, 2016)

Neural Headline Generation on Abstract Meaning Representation. - Sho Takase; Jun Suzuki 001; Naoaki Okazaki; Tsutomu Hirao; Masaaki Nagata (EMNLP, 2016)

Empirical comparison of dependency conversions for RST discourse trees. - Katsuhiko Hayashi 001; Tsutomu Hirao; Masaaki Nagata (SIGDIAL Conference, 2016)

Probabilistic latent variable models for unsupervised many-to-many object matching. - Tomoharu Iwata; Tsutomu Hirao; Naonori Ueda (Inf. Process. Manag., 2016)

Oracle Summaries of Compressive Summarization. - Tsutomu Hirao; Masaaki Nishino; Masaaki Nagata (ACL (2), 2017)

Enumeration of Extractive Oracle Summaries. - Tsutomu Hirao; Masaaki Nishino; Jun Suzuki 001; Masaaki Nagata (EACL (1), 2017)

Supervised Attention for Sequence-to-Sequence Constituency Parsing. - Hidetaka Kamigaito; Katsuhiko Hayashi 001; Tsutomu Hirao; Hiroya Takamura; Manabu Okumura; Masaaki Nagata (IJCNLP(2), 2017)

Unsupervised group matching with application to cross-lingual topic matching without alignment information. - Tomoharu Iwata; Motonobu Kanagawa; Tsutomu Hirao; Kenji Fukumizu (Data Min. Knowl. Discov., 2017)

Automatic Pyramid Evaluation Exploiting EDU-based Extractive Reference Summaries. - Tsutomu Hirao; Hidetaka Kamigaito; Masaaki Nagata (EMNLP, 2018)

Pruning Basic Elements for Better Automatic Evaluation of Summaries. - Ukyo Honda; Tsutomu Hirao; Masaaki Nagata (NAACL-HLT (2), 2018)

Higher-Order Syntactic Attention Network for Longer Sentence Compression. - Hidetaka Kamigaito; Katsuhiko Hayashi 001; Tsutomu Hirao; Masaaki Nagata (NAACL-HLT, 2018)

Provable Fast Greedy Compressive Summarization with Any Monotone Submodular Function. - Shinsaku Sakaue; Tsutomu Hirao; Masaaki Nishino; Masaaki Nagata (NAACL-HLT, 2018)

Topic Models for Unsupervised Cluster Matching. - Tomoharu Iwata; Tsutomu Hirao; Naonori Ueda (IEEE Trans. Knowl. Data Eng., 2018)

Split or Merge: Which is Better for Unsupervised RST Parsing? - Naoki Kobayashi; Tsutomu Hirao; Kengo Nakamura 001; Hidetaka Kamigaito; Manabu Okumura; Masaaki Nagata (EMNLP/IJCNLP (1), 2019)

Generating Natural Anagrams: Towards Language Generation Under Hard Combinatorial Constraints. - Masaaki Nishino; Sho Takase; Tsutomu Hirao; Masaaki Nagata (EMNLP/IJCNLP (1), 2019)

ILP-based Compressive Speech Summarization with Content Word Coverage Maximization and Its Oracle Performance Analysis. - Atsunori Ogawa; Tsutomu Hirao; Tomohiro Nakatani; Masaaki Nagata (ICASSP, 2019)

NTT's Machine Translation Systems for WMT19 Robustness Task. - Soichiro Murakami; Makoto Morishita; Tsutomu Hirao; Masaaki Nagata (WMT (2), 2019)

Top-Down RST Parsing Utilizing Granularity Levels in Documents. - Naoki Kobayashi; Tsutomu Hirao; Hidetaka Kamigaito; Manabu Okumura; Masaaki Nagata (AAAI, 2020)

SODA: Story Oriented Dense Video Captioning Evaluation Framework. - Soichiro Fujita; Tsutomu Hirao; Hidetaka Kamigaito; Manabu Okumura; Masaaki Nagata (ECCV (6), 2020)

Sequential Span Classification with Neural Semi-Markov CRFs for Biomedical Abstracts. - Kosuke Yamada; Tsutomu Hirao; Ryohei Sasano; Koichi Takeda 003; Masaaki Nagata (EMNLP (Findings), 2020)

Recovery command generation towards automatic recovery in ICT systems by Seq2Seq learning. - Hiroki Ikeuchi; Akio Watanabe; Tsutomu Hirao; Makoto Morishita; Masaaki Nishino; Yoichi Matsuo; Keishiro Watanabe (NOMS, 2020)

Improving Neural RST Parsing Model with Silver Agreement Subtrees. - Naoki Kobayashi; Tsutomu Hirao; Hidetaka Kamigaito; Manabu Okumura; Masaaki Nagata (NAACL-HLT, 2021)

A Simple and Strong Baseline for End-to-End Neural RST-style Discourse Parsing. - Naoki Kobayashi; Tsutomu Hirao; Hidetaka Kamigaito; Manabu Okumura; Masaaki Nagata (EMNLP (Findings), 2022)

Implicit Sense-labeled Connective Recognition as Text Generation. - Yui Oka; Tsutomu Hirao (EMNLP (Findings), 2023)

Simplifying Translations for Children: Iterative Simplification Considering Age of Acquisition with LLMs. - Masashi Oshika; Makoto Morishita; Tsutomu Hirao; Ryohei Sasano; Koichi Takeda 003 (ACL (Findings), 2024)

WikiSplit++: Easy Data Refinement for Split and Rephrase. - Hayato Tsukagoshi; Tsutomu Hirao; Makoto Morishita; Katsuki Chousa; Ryohei Sasano; Koichi Takeda 003 (LREC/COLING, 2024)

Argument Mining as a Text-to-Text Generation Task. - Masayuki Kawarada; Tsutomu Hirao; Wataru Uchida; Masaaki Nagata (EACL (1), 2024)

Can we obtain significant success in RST discourse parsing by using Large Language Models? - Aru Maekawa; Tsutomu Hirao; Hidetaka Kamigaito; Manabu Okumura (EACL (1), 2024)

Video Discourse Parsing and Its Application to Multimodal Summarization: A Dataset and Baseline Approaches. - Tsutomu Hirao; Naoki Kobayashi; Hidetaka Kamigaito; Manabu Okumura; Akisato Kimura (EMNLP (Findings), 2024)

Automatic Evaluation of Language Generation Technology Based on Structure Alignment. - Katsuki Chousa; Tsutomu Hirao (COLING, 2025)