Hiroshi Nakagawa


2014

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Formalizing Word Sampling for Vocabulary Prediction as Graph-based Active Learning
Yo Ehara | Yusuke Miyao | Hidekazu Oiwa | Issei Sato | Hiroshi Nakagawa
Proceedings of the 2014 Conference on Empirical Methods in Natural Language Processing (EMNLP)

2013

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Automatically Determining a Proper Length for Multi-Document Summarization: A Bayesian Nonparametric Approach
Tengfei Ma | Hiroshi Nakagawa
Proceedings of the 2013 Conference on Empirical Methods in Natural Language Processing

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Understanding seed selection in bootstrapping
Yo Ehara | Issei Sato | Hidekazu Oiwa | Hiroshi Nakagawa
Proceedings of TextGraphs-8 Graph-based Methods for Natural Language Processing

2012

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Reducing Wrong Labels in Distant Supervision for Relation Extraction
Shingo Takamatsu | Issei Sato | Hiroshi Nakagawa
Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)

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Cross-Lingual Topic Alignment in Time Series Japanese / Chinese News
Shuo Hu | Yusuke Takahashi | Liyi Zheng | Takehito Utsuro | Masaharu Yoshioka | Noriko Kando | Tomohiro Fukuhara | Hiroshi Nakagawa | Yoji Kiyota
Proceedings of the 26th Pacific Asia Conference on Language, Information, and Computation

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Mining Words in the Minds of Second Language Learners: Learner-Specific Word Difficulty
Yo Ehara | Issei Sato | Hidekazu Oiwa | Hiroshi Nakagawa
Proceedings of COLING 2012

2010

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Features for Detecting Hedge Cues
Nobuyuki Shimizu | Hiroshi Nakagawa
Proceedings of the Fourteenth Conference on Computational Natural Language Learning – Shared Task

2009

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Deterministic Shift-Reduce Parsing for Unification-Based Grammars by Using Default Unification
Takashi Ninomiya | Takuya Matsuzaki | Nobuyuki Shimizu | Hiroshi Nakagawa
Proceedings of the 12th Conference of the European Chapter of the ACL (EACL 2009)

2008

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Automated Subject Induction from Query Keywords through Wikipedia Categories and Subject Headings
Yoji Kiyota | Noriyuki Tamura | Satoshi Sakai | Hiroshi Nakagawa | Hidetaka Masuda
Proceedings of the Sixth International Conference on Language Resources and Evaluation (LREC'08)

This paper addresses a novel approach that integrates two different types of information resources: the World Wide Web and libraries. This approach is based on a hypothesis: advantages and disadvantages of the Web and libraries are complemental. The integration is based on correspondent conceptual label names between the Wikipedia categories and subject headings of library materials. The method enables us to find locations of bookshelves in a library easily, using any query keywords. Any keywords which are registered as Wikipedia items are acceptable. The advantages of the method are: the integrative approach makes subject access of library resources have broader coverage than an approach which only uses subject headings; and the approach navigates us to reliable information resources. We implemented the proposed method into an application system, and are now operating the system at several university libraries in Japan. We are planning to evaluate the method based on the query logs collected by the system.

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Modeling Chinese Documents with Topical Word-Character Models
Wei Hu | Nobuyuki Shimizu | Hiroshi Nakagawa | Huanye Sheng
Proceedings of the 22nd International Conference on Computational Linguistics (Coling 2008)

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Metric Learning for Synonym Acquisition
Nobuyuki Shimizu | Masato Hagiwara | Yasuhiro Ogawa | Katsuhiko Toyama | Hiroshi Nakagawa
Proceedings of the 22nd International Conference on Computational Linguistics (Coling 2008)

2007

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Bayesian Document Generative Model with Explicit Multiple Topics
Issei Sato | Hiroshi Nakagawa
Proceedings of the 2007 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning (EMNLP-CoNLL)

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Structural Correspondence Learning for Dependency Parsing
Nobuyuki Shimizu | Hiroshi Nakagawa
Proceedings of the 2007 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning (EMNLP-CoNLL)

2006

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A Domain Ontology Production Tool Kit Based on Automatically Constructed Case Frames
Yoji Kiyota | Hiroshi Nakagawa
Proceedings of the Fifth International Conference on Language Resources and Evaluation (LREC’06)

This paper proposes a tool kit to produce a domain ontology for text mining, based on case frames automatically constructed from a raw corpus of a specific domain. Since case frames are strongly related to implicit facts hidden in large domain-specific corpora, we can say that case frames are a promising device for text mining. The aim of the tool kit is to enable automatic analysis of event reports, from which implicit factors of the events are to be extracted. The tool kit enables us to produce a domain ontology by iterating associative retrieval of case frames and manual refinement. In this study, the tool kit is applied to the Japan Airlines pilot report collection, and a domain ontology of contributing factors in the civil aviation domain is experimentally produced. A lot of interesting examples are found in the ontology. In addition, a brief examination of the production process shows the efficiency of the tool kit.

2005

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Automatic Term Extraction Based on Perplexity of Compound Words
Minoru Yoshida | Hiroshi Nakagawa
Second International Joint Conference on Natural Language Processing: Full Papers

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WebExperimenter for Multiple-Choice Question Generation
Ayako Hoshino | Hiroshi Nakagawa
Proceedings of HLT/EMNLP 2005 Interactive Demonstrations

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Reformatting Web Documents via Header Trees
Minoru Yoshida | Hiroshi Nakagawa
Proceedings of the ACL Interactive Poster and Demonstration Sessions

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A Real-Time Multiple-Choice Question Generation For Language Testing: A Preliminary Study
Ayako Hoshino | Hiroshi Nakagawa
Proceedings of the Second Workshop on Building Educational Applications Using NLP

2004

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Automatic Construction of Japanese KATAKANA Variant List from Large Corpus
Takeshi Masuyama | Satoshi Sekine | Hiroshi Nakagawa
COLING 2004: Proceedings of the 20th International Conference on Computational Linguistics

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Terminal Device Oriented Comparable Corpora and its Alignment- Towards Extracting Paraphrasing Patterns
Hiroshi Nakagawa | Hidetaka Masuda | Dai Sato
Proceedings of the Fourth International Conference on Language Resources and Evaluation (LREC’04)

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Chinese Term Extraction from Web Pages Based on Compound Term Productivity
Hiroshi Nakagawa | Hiroyuki Kojima | Akira Maeda
Proceedings of the Third SIGHAN Workshop on Chinese Language Processing

2003

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Kiwi: A Multilingual Usage Consultation Tool based on Internet Searching
Kumiko Tanaka-Ishii | Masato Yamamoto | Hiroshi Nakagawa
The Companion Volume to the Proceedings of 41st Annual Meeting of the Association for Computational Linguistics

2002

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A Simple but Powerful Automatic Term Extraction Method
Hiroshi Nakagawa | Tatsunori Mori
COLING-02: COMPUTERM 2002: Second International Workshop on Computational Terminology

2000

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Alignment of Sound Track with Text in a TV Drama
Seigo Tanimura | Hiroshi Nakagawa
Proceedings of the COLING-2000 Workshop on Semantic Annotation and Intelligent Content

1999

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Identification of Coreference Between Names and Faces
Koichi Yamada | Kazunari Sugiyama | Yasunori Yonamine | Hiroshi Nakagawa
Coreference and Its Applications

1998

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Hypertext Authoring for Linking Relevant Segments of Related Instruction Manuals
Hiroshi Nakagawa | Tatsunori Mori | Nobuyuki Omori | Jun Okamura
COLING 1998 Volume 2: The 17th International Conference on Computational Linguistics

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Hypertext Authoring for Linking Relevant Segments of Related Instruction Manuals
Hiroshi Nakagawa | Tatsunori Mori | Nobuyuki Omori | Jun Okamura
36th Annual Meeting of the Association for Computational Linguistics and 17th International Conference on Computational Linguistics, Volume 2

1997

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Constraints and defaults of zero pronouns in Japanese instruction manuals
Tatsunori Mori | Mamoru Matsuo | Hiroshi Nakagawa
Operational Factors in Practical, Robust Anaphora Resolution for Unrestricted Texts

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Scene Direction Based Reference In Drama Scenes
Hiroshi Nakagawa | Yoshitomo Yaginuma | Masao Sakauchi
Referring Phenomena in a Multimedia Context and their Computational Treatment

1996

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Zero Pronouns and Conditionals in Japanese Instruction Manuals
Tatsunori Mori | Hiroshi Nakagawa
COLING 1996 Volume 2: The 16th International Conference on Computational Linguistics

1994

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Semantics of Complex Sentences in Japanese
Hiroshi Nakagawa | Shin-ichiro Nishizawa
COLING 1994 Volume 2: The 15th International Conference on Computational Linguistics

1992

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Zero Pronouns as Experiencer in Japanese Discourse
Hiroshi Nakagawa
COLING 1992 Volume 1: The 15th International Conference on Computational Linguistics

1988

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A Parser based on Connectionist Model
Hiroshi Nakagawa | Tatsunori Mori
Coling Budapest 1988 Volume 2: International Conference on Computational Linguistics