| title: SAE Brain Semantic Interface | |
| emoji: 🧠 | |
| colorFrom: blue | |
| colorTo: purple | |
| sdk: docker | |
| pinned: false | |
| app_port: 7860 | |
| # SAE Brain Explorer | |
| Interactive explorer for Sparse Autoencoder (SAE) features with brain alignment. | |
| ## Features | |
| - UMAP scatter of 10,000 SAE features (DINOv2 L11 Spatial) | |
| - Click any feature to see top-activating images with heatmap overlays | |
| - CLIP text search across features | |
| - NSD brain dataset: same features viewed through 34K natural scene images | |
| - Phi-based brain alignment: which features are most predictive of fMRI activity | |
| - Cortical map visualization | |
| ## Data | |
| - **SAE**: DINOv2 L11 Spatial, d=10,000, k=100 | |
| - **Images**: COCO val2017 | |
| - **Brain**: NSD sub01 fMRI aligned to SAE features via Phi regression | |
| ## Environment Variables (set in Space settings) | |
| | Variable | Required | Description | | |
| |---|---|---| | |
| | `HF_DATASET_REPO` | Yes | HF dataset repo ID, e.g. `username/sae-nsd-data` | | |
| | `HF_TOKEN` | If private | HF read token for the dataset repo | | |
| | `GOOGLE_API_KEY` | No | Enables Gemini-powered auto-labeling | | |