Update README.md

README.md

@@ -1,3 +1,21 @@
----
-license: mit
----
+---
+license: mit
+---
+Cached SAE acts stored in CSR format. Not especially optimized for others' use/fleshed out.
+
+If you want to use them, do
+
+```
+import torch
+
+csr_kwargs = torch.load('FEAT_IDX.pt')
+
+# The matrices are stored in space-efficient formats that're incompatible with torch's sparse csr tensor.
+# Convert them back before constructing the matrix.
+csr_kwargs['crow_indices'] = csr_kwargs['crow_indices'].int()
+csr_kwargs['col_indices'] = csr_kwargs['crow_indices'].int()
+csr_kwargs['values'] = csr_kwargs['values'].float()/255
+
+feat_acts = torch.sparse_csr_tensor(**csr_kwargs)
+```
+