Author

Yuki Okafuji

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#human-computer interacti... Open access Aug 2026

Learning From Success and Failure: Acquiring Adaptive Dialogue Strategies for Social Robots

The results demonstrate that explicitly representing failure strategies complements success strategies and improves performance, and highlight a practical pipeline for constructing and maintaining an interpretable strategy repository from in-the-wild deployment logs by recycling abundant failure interactions as reusabl...

Sanae Yamashita, Yuki Okafuji · IEEE Robotics and Automation... · 0 citations

#large language models Preprint Jul 2026

Low-Latency Turn-Taking via Context-Aware Preface Generation in a Real-World Dialogue Robot

Large language model (LLM)-based dialogue systems suffer response delays because generation begins only after final speech recognition. While fixed fillers are a workaround, they become unnatural over time. We propose a two-stage incremental framework that decouples prefatory-response preparation from speech onset. Onc...

Yuki Okafuji, K. Inoue, Yoshiki Ohira · 0 citations