Author

Jinya Sakurai

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Preprint Sep 2026

Foreground Voice Activity Detection: Learning Speaker Selectivity from Supervision

Voice activity detection (VAD) fronts most voice-agent pipelines, yet production detectors treat all human speech, background talkers included, as valid activity; in crowded settings this floods recognition, stalls turn-taking, and triggers false barge-in. We formalize Foreground VAD (FVAD): a frame-synchronous, enroll...

Guang-Zhao Yang, Muhammad Huzaifah, Yu Pan et al. · 0 citations

#natural language process... Preprint Aug 2026

Simplex Relaxation for Discrete Diffusion

Simplax is introduced, an exact Dirichlet--categorical augmentation that couples each corrupted categorical state with an auxiliary simplex-valued variable while preserving the original uniform diffusion process as its categorical marginal.

Jinya Sakurai, Patrick Pynadath, Satoshi Hayakawa et al. · 1 citation

Preprint Aug 2026

Test-Time Scaling for Safe Text-Guided Image Generation via Intermediate Clean Estimates

A scalable and flexible solution for safe generative deployment that allows weight-preserving detection, keeps non-violating inference latency nearly unchanged as the maximum budget increases, and offers flexibility in safety performance via test-time scaling.

Jinya Sakurai, Shueicheng Yan, Xun Xu · 0 citations