HF RL Explorer

Feature Request: Add CTC Prefix Beam Search Decoder with Optional ARPA LM

Feature Request: Add CTC Prefix Beam Search Decoder with Optional ARPA LM: a task in LegoFlow-SWE (Harbor dataset). Currently the transcription library supports a CTC greedy decoder via Decoder::CTC , which simply takes the argmax per frame. There is no beam search option for CTC, so users cannot…

The task

Currently the transcription library supports a CTC greedy decoder via `Decoder::CTC`, which simply takes the argmax per frame. There is no beam search option for CTC, so users cannot trade decoding time for substantial accuracy improvements. Shallow fusion with an n‑gram language model is also unavailable, which…

Part of Lego-X/LegoFlow-SWE.