William Chen

2 papers indexed

arxivcs.SDcs.LG2026-07-09

MulTTiPop: A Multitrack Transcription Dataset for Pop Music

Nathan Pruyne, Benjamin Stoler, William Chen, Chien-yu Huang, Shinji Watanabe, Chris Donahue

We present MulTTiPop, a dataset of pop music segments and their associated multitrack MIDI recordings for the evaluation of automatic music transcription models. MulTTiPop contains 572 segments of popular music totaling 3.5 hours of audio, and contains songs from diverse genres a…

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arxivcs.RO2026-06-30

Adapting Generalist Robot Policies with Semantic Reinforcement Learning

Jagdeep Singh Bhatia, Andrew Wagenmaker, William Chen, Sergey Levine

Generalist robot policies learn a diverse repertoire of behaviors from large-scale pretraining. In principle, this makes them excellent priors for downstream adaptation via reinforcement learning (RL). In practice, however, standard RL methods leveraging this prior optimize direc…

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