Data Augmentation Using User Attention for Educational Content Recommendation Based on FFM. - Kazuma Ohtomo; Ryosuke Harakawa; Masaki Iisaka; Masahiro Iwahashi (GCCE, 2020)

Weighted LDA Using Metadata for Extracting Topics Needed by Teachers. - Koki Takahashi; Ryosuke Harakawa; Masaki Iisaka; Masahiro Iwahashi (GCCE, 2020)

Sequential Recommender System of Educational Contents with End-to-End Title Feature Extraction for Reducing Utility Gap. - Kazuma Ohtomo; Ryosuke Harakawa; Masaki Iisaka; Masahiro Iwahashi (GCCE, 2021)

AM-Bi-LSTM: Adaptive Multi-Modal Bi-LSTM for Sequential Recommendation. - Kazuma Ohtomo; Ryosuke Harakawa; Masaki Iisaka; Masahiro Iwahashi (IEEE Access, 2024)