Update README.md

README.md

@@ -22,7 +22,19 @@ It achieves the following results on the evaluation set:
 
 ## Model description
 
-More information needed
+This model was trained on a dataset called PWKP-GPT3-LENGTH-CONTROL-40BUCKETS.
+The dataset contains 30k instances taken from PWKP, then processed through GPT3 to obtain simplifications.
+The 30k instances come from: 10k which were supposed to generate very long simplifications, 
+10k which were supposed to generate very short simplifications, and 10k without specifying the simplicity level.
+The model does not sucessfuly work on these buckets.
+There exists another dataset, the PWKP-GPT3-LENGTH-CONTROL-4BUCKETS, but it was never trained on something.
+Those buckets are also rather unbalanced. 
+
+The idea comes from 
+Controllable Sentence Simplification
+Louis Martin, https://arxiv.org/pdf/1910.02677.pdf
+
+It was fine-tuned on the FLAN-T5-base model.
 
 ## Intended uses & limitations