pengyizhou/whisper-fleurs-km_kh-small

Whisper Fine-tuning for Khmer Language

This project provides a configurable way to fine-tune OpenAI's Whisper model specifically on the Khmer language using the Google FLEURS dataset (km_kh).

Features

• Flexible Configuration: All parameters are configurable through YAML files
• Multi-GPU Support: Automatic detection and support for multiple GPUs
• Dynamic Language Selection: Train on any subset of supported languages
• On-the-fly Processing: Efficient memory usage with dynamic audio preprocessing
• Comprehensive Evaluation: Automatic evaluation on test sets

Configuration

All parameters are configurable through the config.yaml file. This configuration is specifically set up for Khmer language training using the Google FLEURS dataset.

Model Configuration

• Model checkpoint (default: openai/whisper-large-v3)
• Maximum target length for sequences

Dataset Configuration

• Uses Google FLEURS Khmer (km_kh) dataset
• Dataset sources and splits
• Language-specific settings
• Training subset ratio (25% of data for faster training)

Training Configuration

• Learning rate, batch sizes, training steps
• Multi-GPU vs single GPU settings
• Evaluation and logging parameters

Environment Configuration

• CPU core limits
• Environment variables for optimization

Pushing to Hub

• I have set the configuration to not push to the Hugging Face Hub by default. You can enable this by setting push_to_hub: true in your config file.

Usage

Basic Usage

python finetune.py --config config.yaml

Custom Configuration

python finetune.py --config my_custom_config.yaml

Multi-GPU Training

Since we only have very few training data (around 2.5 hours), multi-GPU training is not recommended.

Configuration File Structure

The config.yaml file is organized into the following sections:

1. model: Model checkpoint and sequence length settings
2. output: Output directory configuration
3. environment: Environment variables and CPU settings
4. audio: Audio processing settings (sampling rate)
5. languages: Khmer language configuration
6. datasets: Google FLEURS Khmer dataset configuration
7. training: All training hyperparameters
8. data_processing: Data processing settings

Customizing Your Training

Adjusting Training Parameters

Modify the training section in config.yaml:

• Change learning rate, batch sizes, or training steps
• Adjust evaluation frequency
• Configure multi-GPU settings

Environment Optimization

Adjust the environment section to optimize for your system:

• Set CPU core limits
• Configure memory usage settings

Configuration

The provided config.yaml is specifically configured for Khmer language training using the Google FLEURS dataset.

Training Commands

Basic Training

python finetune.py

Single GPU Training

python finetune.py

Inference Guide

After training your model, you can use the provided inference.py script for speech recognition:

python inference.py

The inference script includes:

• Model loading from the trained checkpoint
• Audio preprocessing pipeline
• Text generation with proper formatting
• Support for Khmer language transcription

Using the Trained Model

The inference script automatically handles:

• Loading the fine-tuned model weights
• Audio preprocessing with proper sampling rate
• Generating transcriptions for Khmer speech
• Output formatting for evaluation metrics

Dependencies

Install required packages:

pip install -r requirements.txt

Key dependencies:

• PyYAML (for configuration loading)
• torch, transformers, datasets
• librosa (for audio processing)
• evaluate (for metrics)

Evaluation Results

Language	Metric	Error Rate
Khmer	CER	33.18%

Note: If you encounter issues running finetune.py, you can use the finetune-backup.py file which contains the original hardcoded configuration.