Update README.md

README.md

@@ -28,3 +28,6 @@ which is slower to iterate over.
 The logic only splits on spaces, so the chunks are likely to be slightly larger than 820 chars. 
 The dataset has been normalized into lower case, with accents and non-english characters removed.
 Items with less than 200 chars or more than 1000 chars have been removed. 
+
+This dataset is processed for convenience, at the expense of losing some percentage of the tokens due to truncation, 
+(assuming the training minibatches are truncated to 128 tokens).