# CLIP Sparse Autoencoder Checkpoint

This model is a sparse autoencoder trained on CLIP's internal representations.

## Model Details

### Architecture
- **Layer**: 3
- **Layer Type**: hook_resid_post
- **Model**: open-clip:laion/CLIP-ViT-B-32-DataComp.XL-s13B-b90K
- **Dictionary Size**: 49152
- **Input Dimension**: 768
- **Expansion Factor**: 64
- **CLS Token Only**: True

### Training
- **Training Images**: 183087104
- **Learning Rate**: 0.0002
- **L1 Coefficient**: 0.3000
- **Batch Size**: 4096
- **Context Size**: 1

## Performance Metrics

### Sparsity
- **L0 (Active Features)**: 64
- **Dead Features**: 29335
- **Mean Log10 Feature Sparsity**: -9.2914
- **Features Below 1e-5**: 48859
- **Features Below 1e-6**: 41691
- **Mean Passes Since Fired**: 16714.2930

### Reconstruction
- **Explained Variance**: 0.9595
- **Explained Variance Std**: 0.0150
- **MSE Loss**: 0.0001
- **L1 Loss**: 0
- **Overall Loss**: 0.0001

## Training Details
- **Training Duration**: 17942.3141 seconds
- **Final Learning Rate**: 0.0002
- **Warm Up Steps**: 200
- **Gradient Clipping**: 1

## Additional Information
- **Weights & Biases Run**: https://wandb.ai/perceptual-alignment/clip/runs/34j4mtdy
- **Original Checkpoint Path**: /network/scratch/s/sonia.joseph/checkpoints/clip-b
- **Random Seed**: 42