RIKEN Center for Advanced Intelligence Project Knowledge Acquisition Team

Team Leader: Yuji Matsumoto (D.Eng.)

Japanese Page

Research Summary

A huge amount of knowledge is being produced along with the advance of scientific fields. Such expert knowledge is partly organized in domain databases, but a large portion of it is still kept in scholarly documents. It is time-consuming and cumbersome to construct domain databases and to conduct content-aware retrieval of scholarly documents. The Knowledge Acquisition Team aims at text/figure analysis and knowledge extraction from scholarly documents and also at development of infrastructure for content-aware retrieval of scholarly documents through domain database completion, knowledge organization, relation and summarization technologies.

Research Subjects:

Natural Language Processing
Knowledge Acquisition
Machine Learning

Main Research Fields

Informatics

Related Research Fields

Multidisciplinary
Complex Systems
Intelligent informatics

Keywords

Natural Language Processing
Knowledge Acquisition
Machine Learning
Information Extraction
Information Retrieval

Selected Publications

1. Ukyo Honda, Taro Watanabe, Yuji Matsumoto
"Switching to Discriminative Image Captioning by Relieving a Bottleneck of Reinforcement Learning"
Proceedings of IEEE/CVF Winter Conference on Applications of Computer Vision (WACV), January, 2023
2. Kenichiro Ando, Takashi Okumura, Mamoru Komachi, Hiromasa Horiguchi, Yuji Matsumoto
"Is artificial intelligence capable of generating hospital discharge summaries from inpatient records?"
PLOS Digit Health 1(12): e0000158, December 12, 2022.
3. Hiroki Teranishi, Yuji Matsumoto
"Coordination Generation via Synchronized Text-Infilling"
Proceedings of the 29th International Conference on Computational Linguistics (COLING), pp.5914-5924, October 2022.
4. Ikuya Yamada, Koki Washio, Hiroyuki Shindo, Yuji Matsumoto
"Global Entity Disambiguation with BERT"
Proceedings of the 2022 Annual Conference of the North American Chapter of the Association for Computational Linguistics (NAACL) (Volume 2: Short Papers), pp.3264-3271, Seattle, +Online, July 2022.
5. Yiran Wang, Hiroyuki Shindo, Yuji Matsumoto, Taro Watanabe
"Nested Named Entity Recognition via Explicitly Excluding the Influence of the Best Path"
The Joint Conference of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing, (ACL-IJCNLP), pp.3547-3557, August 2021.
6. Ukyo Honda, Yoshitaka Ushiku, Atsushi Hashimoto, Taro Watanabe and Yuji Matsumoto
"Denoising Pseudo-Captions in Unsupervised Image Captioning"
Proceedings of the 16th conference of the European Chapter of the Association for Computational Linguistics (EACL), Online, pp. 3692-3702, April, 2021.
7. Vu Tran, Van-Hien Tran, Phuong Minh Nguyen, Chau Minh Nguyen, Ken Satoh, Yuji Matsumoto, Minh Le Nguyen
"CovRelex: A COVID-19 Retrieval System with Relation Extraction"
Proceedings of the 16th conference of the European Chapter of the Association for Computational Linguistics (EACL): System Demonstrations, Online, pp. 24-31, April, 2021.
8. Noriki Nishida, Yuji Matsumoto
"Out-of-Domain Discourse Dependency Parsing via Bootstrapping: An Empirical Analysis on Its Effectiveness and Limitation"
Transaction of the Association for Computational Linguistics (TACL), Vol.10, pp.127-144, February 9, 2022.
9. Yuya Sawada, Takashi Wada, Takayoshi Shibahara, Hiroki Teranishi, Shuhei Kondo, Hiroyuki Shindo, Taro Watanabe and Yuji Matsumoto
"Coordination Boundary Identification without Labeled Data for Compound Terms Disambiguation"
Proceedings of the 28th International Conference on Computational Linguistics (COLING), pp.3043-3049, December 2020.
10. Ikuya Yamada, Akari Asai, Hiroyuki Shindo, Hideaki Takeda, Yuji Matsumoto
"LUKE: Deep Contextualized Entity Representations with Entity-aware Self-attention"
Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP), pp. 6442-6454, November 2020.

Lab Members

Principal investigator

Yuji Matsumoto: Team Leader

Core members

Noriki Nishida: Research Scientist
Hiroki Teranishi: Postdoctoral Researcher
Thuy Van Phi: Postdoctoral Researcher
Rumana Ferdous Munne: Postdoctoral Researcher
Shanshan Liu: Technical Staff I
Narumi Tokunaga: Technical Staff II
Hiroki Ouchi: Visiting Scientist
Yutaro Shigeto: Visiting Scientist
Ikuya Yamada: Visiting Scientist
Junichiro Mori: Visiting Scientist
Kouji Kozaki: Visiting Scientist
Shusuke Tatsumi: Visiting Scientist
Akiko Aizawa: Visiting Scientist
Katsuhito Sudoh: Visiting Scientist
Ukyo Honda: Visiting Scientist
Kenji Yamauchi: Visiting Scientist
An Tuan Dao: Research Part-time Worker I
Yi-Pei Chen: Research Part-time Worker I
Yuya Sawada: Research Part-time Worker I

Contact Information

Nihonbashi 1-chome Mitsui Building, 15th floor,
1-4-1 Nihonbashi, Chuo-ku, Tokyo
Email: yuji.matsumoto [at] riken.jp