Embedding sizes of collab model and individual users & items do not match

Hello, in lesson 5, I notice that the embedding sizes of the users & movies in the model are actually different from their actual sizes.

I read from this post that it sometimes add an embedding for missing columns, but how do we explain such a big difference for movie embeddings? The size of it in the model is actually smaller than the actual total no. of movies.

Any idea? :thinking: :slight_smile: