Kenji's Home Page

Kenji Imamura (今村 賢治)

A researcher of natural language processing.
My research interests include: 1) machine translation, 2) NLP using neural networks, 3) natural language generation, 4) natural language analysis (dependency parsing, predicate-argument structure analysis).

Recent Publications

2021

NICT-2 Translation System at WAT-2021: Applying a Pretrained Multilingual Encoder-Decoder Model to Low-resource Language Pairs

  • Kenji Imamura and Eiichiro Sumita

  • The 8th Workshop on Asian Translation (WAT-2021) in ACL-IJCNLP 2021, pp. 90-95, Aug. 2021.

  • [paper (ACL Anthology) / bib]

A Study of Speed-up in Neural Machine Translation Combined with Knowledge Distillation.

    • in Japanese. 「知識蒸留によるニューラル機械翻訳の高速化検討」

    • Kenji Imamura.

    • The 27th Annual Meeting of Assoc. for Natural Language Processing, 123-127, Mar. 2021.

    • [paper (J-stage) / bib / appendix ]

2020

Transformer-based Double-token Bidirectional Autoregressive Decoding in Neural Machine Translation

Improvement of Neural Machine Translation that Uses Non-autoregressive Decoding

    • in Japanese. 「非自己回帰デコーディング型ニューラル機械翻訳の改善」

    • Kenji Imamura.

    • Japio YEAR BOOK 2020, pp. 296-299, Nov. 2020.

    • [paper (Japio Web Page) / bib]

Neural Machine Translation Using Multiple Back-translation Generated by Sampling

    • in Japanese. 「サンプリング生成に基づく複数逆翻訳を用いたニューラル機械翻訳」

    • Kenji Imamura, Atsushi Fujita, and Eiichiro Sumita.

    • Transactions of the Japanese Society for Artificial Intelligence, Vol.35, Issue 3, pp. A-JA9_1-9, May 2020.

    • [paper (J-STAGE) / bib]

Language Translation

    • Kenji Imamura.

    • Yutaka Kidawara, Eiichiro Sumita, and Hisashi Kawai editors.

    • in Speech-toSpeech Translation, Chapter 4, Springer Singapore, ISBN:978-981-15-0594-2, Nov. 2019.

    • [Springer / bib]

2019

Recycling a Pre-trained BERT Encoder for Neural Machine Translation

Long Warm-up and Self-Training: Training Strategies of NICT-2 NMT System at WAT-2019

    • Kenji Imamura and Eiichiro Sumita.

    • The 6th Workshop on Asian Translation (WAT 2019) in EMNLP-IJCNLP 2019, pp. 141-145, November 2019.

    • [paper (ACL Anthology) / bib]

Neural Machine Translation that Recycles Pre-trained BERT Encoder

    • in Japanese. 「事前訓練済みBERTエンコーダーを再利用したニューラル機械翻訳」

    • Kenji Imamura and Eiichiro Sumita.

    • IPSJ SIG Technical Report 2019-NL-241, No.1, pp.1-8, August 2019.
      IPSJ SIG-NL No.241 Excellect Research Award

    • [paper (IPSJ digital library) / bib]

Exploiting Out-of-Domain Parallel Data through Multilingual Transfer Learning for Low-Resource Neural Machine Translation

    • Aizhan Imankulova, Raj Dabre, Atsushi Fujita, and Kenji Imamura.

    • Machine Translation Summit XVII, Volume 1: Research Track, pp.128-139, August 2019.

    • [paper (arXiv) / bib]

Usage of Long Context in Dialogue Translation

    • in Japanese. 「対話翻訳における長距離文脈の利用」

    • Kenji Imamura and Eiichiro Sumita.

    • The 25th Annual Meeting of Assoc. for Natural Language Processing, pp.550-553, March 2019.

    • [paper (J-stage) / bib]

2018

Usage of Multiple Models in Neural Machine Translation

    • in Japanese. 「ニューラル機械翻訳における複数モデルの利用」

    • Kenji Imamura and Eiichiro Sumita.

    • Japio YEAR BOOK 2018, pp.304-308, Nov. 2018.

    • [paper (Japio Web Page) / bib]

Enhancement of Encoder and Attention Using Target Monolingual Corpora in Neural Machine Translation

    • Kenji Imamura, Atsushi Fujita, and Eiichiro Sumita.

    • The 2nd Workshop on Neural Machine Translation and Generation (NMT-2018) in ACL-2018, pp.55-63, Jul. 2018.

    • [paper (ACL Anthology) / bib]

NICT Self-Training Approach to Neural Machine Translation at NMT-2018

    • Kenji Imamura and Eiichiro Sumita.

    • The 2nd Workshop on Neural Machine Translation and Generation (NMT-2018) in ACL-2018, pp.110-115, Jul. 2018.

    • [paper (ACL Anthology) / bib]

Multilingual Parallel Corpus for Global Communication Plan

    • Kenji Imamura and Eiichiro Sumita.

    • 11th edition of the Language Resources and Evaluation Conference (LREC-2018), pp.3453-3458, May 2018.

    • [paper / bib]

Training Strategy for Encoder-Decoder Using Monolingual Corpura and Back-Translation

    • in Japanese. 「単言語コーパスと逆翻訳を用いたエンコーダー・デコーダーの訓練法」

    • Kenji Imamura, Atsushi Fujita, and Eiichiro Sumita.

    • The 24th Annual Meeting of Assoc. for Natural Language Processing, pp.29-32, March 2018.

    • [paper (J-stage) / bib]

Multilingual Parallel Corpus for Global Communication Plan

    • in Japanese. 「グローバルコミュニケーション計画のための多言語パラレルコーパス」

    • Kenji Imamura and Eiichiro Sumita.

    • The 24th Annual Meeting of Assoc. for Natural Language Processing, pp.512-515, March 2018.

    • [paper (J-stage) / bib]

2017

Ensemble and Reranking: Using Multiple Models in the NICT-2 Neural Machine Translation System at WAT2017

    • Kenji Imamura and Eiichiro Sumita.

    • 4th Workshop on Asian Translation (WAT2017) in IJCNLP-2017, pp.127-134, Nov. 2017.

    • [paper (ACL Anthology) / bib]

Usage of Multiple Models by Ensemble and Bi-directional Reranking in Neural Machine Translation

    • in Japanese. 「双方向リランキングとアンサンブルを併用したニューラル機械翻訳における複数モデルの利用法」

    • Kenji Imamura and Eiichiro Sumita.

    • IPSJ SIG Technical Report 2017-NL-233, No.9, Oct. 2017.

    • [paper (IPSJ digital library) / bib]

Multi-domain Adaptation for Statistical Machine Translation Based on Feature Augmentation

    • in Japanese. 「素性空間拡張法に基づくフレーズベース統計翻訳のマルチドメイン適応」

    • Kenji Imamura and Eiichiro Sumita.

    • Journal of Natural Language Processing, Vol.24, No.4, pp. 597-618, Sep. 2017.

    • [paper (J-STAGE) / bib]

History of Machine Translation

    • in Japanese. 「機械翻訳の歴史」

    • Kenji Imamura.

    • Encyclopedia of Artificial Intelligence, Sec.8-29, pp.668-671, Kyoritsu Publisher, ISBN:978-4-320-12420-2, Jul. 2017.

    • [Kyoritsu Publisher / bib]

Introducing Monolingual Corpora to Neural Machine Translation via Pseudo-Source Genaration

    • in Japanese. 「疑似原文生成によるニューラル機械翻訳への単言語コーパスの導入」

    • Kenji Imamura and Eiichiro Sumita.

    • The 23rd Annual Meeting of Assoc. for Natural Language Processing, pp.1023-1026, March 2017.

    • [paper / bib]

Recent Pictures

Snow
Jan., 2021

Deerlet
Jun., 2020

LeTAO
Aug., 2019

Sun Flower
Nov., 2018