Document Pwavevelocity payload

README.md

@@ -16,12 +16,15 @@ This dataset package supports the official SAII-CLDM open-source implementation.
 Payload files:
 
 ```text
+improved-diffusion/MINE/Pwavevelocity.mat
 marmousi/marmousi_256_train.npz
 overthrust/Overthrust_trueimp.mat
 prepare_marmousi_256_train.py
 ```
 
-`marmousi_256_train.npz` is derived from the official Marmousi model and contains `256 x 256` log-velocity patches with flip and elastic-deformation augmentations.
+`Pwavevelocity.mat` is the official Marmousi velocity model file used by the default Stage 1 VQGAN multi-scale training config and the experimental Diffusers VQGAN trainer.
+
+`marmousi_256_train.npz` is derived from the official Marmousi model and contains `256 x 256` log-velocity patches with flip and elastic-deformation augmentations. It is used by Stage 2 training and the experimental Diffusers LDDPM trainer.
 
 `Overthrust_trueimp.mat` is the Overthrust benchmark file used by the evaluation code.
 
@@ -30,6 +33,7 @@ prepare_marmousi_256_train.py
 Example `.env` entries for the code repository:
 
 ```bash
+IMPROVED_DIFFUSION_MINE_DIR=./data/saii-cldm-data/improved-diffusion/MINE
 MARMousi_NPZ=./data/saii-cldm-data/marmousi/marmousi_256_train.npz
 OVERTHRUST_DATA_DIR=./data/saii-cldm-data/overthrust
 ```