A New Depth-First-Search Algorithm for and/or Trees. - Ayumu Nagai (J. Int. Comput. Games Assoc., 1999)

Inappropriateness of the criterion of k-way normalized cuts for deciding the number of clusters. - Ayumu Nagai (Pattern Recognit. Lett., 2007)

Automatic Compensation of Radial Distortion by Minimizing Entropy of Histogram of Oriented Gradients. - Yuta Kanuki; Naoya Ohta; Ayumu Nagai (ACPR, 2013)

On the Improvement of Recognizing Single-Line Strings of Japanese Historical Cursive. - Ayumu Nagai (ICDAR, 2019)

Recognizing Japanese Historical Cursive with Pseudo-Labeling-aided CRNN as an Application of Semi-Supervised Learning to Sequence Labeling. - Ayumu Nagai (ICFHR, 2020)

Generation of a Large-Scale Line Image Dataset with Ground Truth Texts from Page-Level Autograph Documents. - Ayumu Nagai (ICONIP (1), 2021)