Studio Ousia at the NTCIR-15 SHINRA2020-ML Task. - Sosuke Nishikawa; Ikuya Yamada (NTCIR, 2020)

Data Augmentation for Learning Bilingual Word Embeddings with Unsupervised Machine Translation. - Sosuke Nishikawa; Ryokan Ri; Yoshimasa Tsuruoka (CoRR, 2020)

Data Augmentation with Unsupervised Machine Translation Improves the Structural Similarity of Cross-lingual Word Embeddings. - Sosuke Nishikawa; Ryokan Ri; Yoshimasa Tsuruoka (ACL (student), 2021)

A Multilingual Bag-of-Entities Model for Zero-Shot Cross-Lingual Text Classification. - Sosuke Nishikawa; Ikuya Yamada; Yoshimasa Tsuruoka; Isao Echizen (CoNLL, 2022)

EASE: Entity-Aware Contrastive Learning of Sentence Embedding. - Sosuke Nishikawa; Ryokan Ri; Ikuya Yamada; Yoshimasa Tsuruoka; Isao Echizen (NAACL-HLT, 2022)

Closer Look at the Transferability of Adversarial Examples: How They Fool Different Models Differently. - Futa Waseda; Sosuke Nishikawa; Trung-Nghia Le; Huy H. Nguyen; Isao Echizen (WACV, 2023)

Search Query Embeddings via User-behavior-driven Contrastive Learning. - Sosuke Nishikawa; Jun Hirako; Nobuhiro Kaji; Koki Watanabe; Hiroki Asano; Souta Yamashiro; Shumpei Sano (NAACL (Industry Track), 2025)