What's the difference between the two models in your code?

[Dinxin]

In the model directory, I noted that there are two directories with respect to model. So, what's the difference between these two models?

[ziqiaoxu]

I believe the first model (zinc) is VAE trained with only smiles of 250k compounds from ZINC, and the second model (zinc_properties) is jointly trained with smiles and their properties.