readme preprocessing steps

README.md

@@ -6,7 +6,7 @@ license: mit
 # CrediBench Cleaned
 
 
-**CDB Cleaned** is the pre-processed version of CrediBench. 
+**CDB Cleaned** is the pre-processed version of CrediBench. This text data is curated for pre-training, as such we follow general pre-processing steps recommended before pre-training on text. 
 
 ## Summary 
 
@@ -18,5 +18,26 @@ license: mit
 - `language`: The language of the text content, and the predicted confidence of said language.
 
 
+## Pre-Processing
+
+CDB Cleaned is pre-processed with [nemo-curator](https://github.com/NVIDIA-NeMo/Curator). We processed the text with the following steps: 
+
+
+### Text-Cleaning
+
+* `UnicodeReformatter`: Uses [ftfy](https://ftfy.readthedocs.io/en/latest/) to fix broken Unicode characters.
+
+* `NewlineNormalizer`: Uses regex to replace 3 or more consecutive newline characters in each document with only 2 newline characters.
+
+* `UrlRemover`: uses regex to remove all URLs in each document. 
+
+### Deduplication
+
+* `Fuzzy Deduplication`: Uses MinHash and Locality Sensitive Hashing to find and remove near-duplicated documents. 
+
+### Language Management
+
+* `FastText Language ID`: To label multilingual content at scale we utilize the [FastText](https://fasttext.cc/docs/en/language-identification.html) language identification model.
+