Using the Mutual k-Nearest Neighbor Graphs for Semi-supervised Classification on Natural Language Data. - Kohei Ozaki; Masashi Shimbo; Mamoru Komachi; Yuji Matsumoto 001 (CoNLL, 2011)

Large-scale Landmark Retrieval/Recognition under a Noisy and Diverse Dataset. - Kohei Ozaki; Shuhei Yokoo (CoRR, 2019)

Team PFDet's Methods for Open Images Challenge 2019. - Yusuke Niitani; Toru Ogawa; Shuji Suzuki; Takuya Akiba; Tommi Kerola; Kohei Ozaki; Shotaro Sano (CoRR, 2019)

Two-stage Discriminative Re-ranking for Large-scale Landmark Retrieval. - Shuhei Yokoo; Kohei Ozaki; Edgar Simo-Serra; Satoshi Iizuka (CVPR Workshops, 2020)

Bundle-type fan-in/fan-out device for 4-core multi-core fiber with high return loss. - Kohei Ozaki; Yoshifumi Koike; Akito Nishimura (OFC, 2023)

Development of Four-Core MCFs with Standard Cladding Diameter from High-Core-Count MCFs. - Kazuhiko Aikawa; Takuya Oda; Shota Kajikawa; Kohei Ozaki; Mayu Iizuka; Katsuhiro Takenaga; Akito Nishimura; Kentaro Ichii (OFC, 2024)