disallow cosine sim dist + learnable codebook

Author: lucidrains

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "vector-quantize-pytorch"
-version = "1.22.0"
+version = "1.22.1"
 description = "Vector Quantization - Pytorch"
 authors = [
     { name = "Phil Wang", email = "lucidrains@gmail.com" }

vector_quantize_pytorch/vector_quantize_pytorch.py

@@ -873,6 +873,7 @@ def __init__(
         self.commitment_weight = commitment_weight
         self.commitment_use_cross_entropy_loss = commitment_use_cross_entropy_loss # whether to use cross entropy loss to codebook as commitment loss
 
+        assert not (use_cosine_sim and learnable_codebook), 'cosine sim distance codebook not compatible with learnable codebook yet'
         self.learnable_codebook = learnable_codebook
 
         has_codebook_orthogonal_loss = orthogonal_reg_weight > 0.