Update README.md

Update description

README.md

@@ -47,3 +47,23 @@ configs:
   - split: val
     path: data/val-*
 ---
+
+# Dataset Card for svg-stack-filtered
+
+This is an attempt to replicate the dataset used for SFT in the paper
+[Rendering-Aware Reinforcement Learning for Vector Graphics Generation](https://huggingface.co/papers/2505.20793)
+
+Processed:
+- Optimized with svgo precision=2
+- Rasterized with cairosvg[^cairo]
+
+[^cairo] cairosvg doesn't implement all svg features, but matches how the original paper
+
+Filtered based on some heuristics:
+- Removed any svg that couldn't be rendered with cairosvg (~30%)
+- Removed solid-color images
+- Removed some problematic tags
+- Removed svgs with `<text>`
+- Removed svgs with embedded data url images
+- Removed any svgs under 100 tokens
+- Removed some broken svgs with nested `<svg>` tags