Projector-only atypical-speech adaptation checkpoint for SLAM-ASR on the CDLI Luganda atypical speech dataset. The encoder and Sunflower-14B decoder remain frozen; only the linear projector is updated from the ASR-adapted starting checkpoint.

What this repository contains

This Hub repository stores a partial SLAM-ASR checkpoint for use with the SLAM-LLM codebase. It is not a standalone transformers checkpoint.

Checkpoint type: projector_only
Architecture: Whisper encoder (Sunbird/asr-whisper-large-v3-salt) + linear projector + Sunflower-14B decoder; encoder frozen; LLM frozen; no PEFT adapters.
Base encoder: Sunbird/asr-whisper-large-v3-salt
Base LLM: Sunbird/Sunflower-14B
Exported files: model.pt

Training / evaluation context

Dataset: cdli/ugandan_luganda_nonstandard_speech_v1.0
Evaluation split: validation
Training speakers: 36
Validation speakers: 5
Speaker overlap: No speaker overlap between train and validation/test

Reported metrics

Normalized WER (JiWER scorer): not provided
Normalized CER (JiWER scorer): not provided
Atypical overall normalized WER: not provided
Atypical overall normalized CER: not provided
Atypical averaged utterance WER: not provided
Atypical averaged utterance CER: not provided

Decode settings used for the reported metrics

Final decode metrics for this checkpoint are not uploaded yet. This repository is being published as an earlier projector-only research checkpoint for comparison.

Additional results notes

This is the epoch 1 step 5000 checkpoint from the projector-only atypical adaptation run. The later epoch 2 step 107 checkpoint achieved the stronger reported test result and is published separately.

Loading notes

Load through SLAM-LLM; this repository stores a partial SLAM-ASR checkpoint, not a standalone Transformers model.

Typical decode flow in this project uses:

examples/asr_luganda/scripts/decode_luganda_sunflower.sh
USE_ENCODER_PEFT=true for encoder-LoRA checkpoints
matching LoRA target modules at decode time

Caveats

This repository stores SLAM-ASR training artifacts intended for research use.
The checkpoint must be used with the matching SLAM-LLM model code and base components.
Results can be sensitive to decode settings and evaluation protocol.

KasuleTrevor/cdli-slam-asr-luganda-atypical-projector-only-step5000

CDLI SLAM-ASR Luganda Atypical Speech Projector-Only Checkpoint (Epoch 1 Step 5000)