Update README.md

README.md

@@ -12,7 +12,7 @@ license: mit
 
 <!-- Provide a longer summary of what this dataset is. -->
 
-- **Curated by:** Lucas S / xTimeCrystal
+- **Curated by:** Lucas S
 - **Language(s) (NLP):** English
 - **License:** MIT
 
@@ -33,10 +33,14 @@ The text is encoded in UTF-8 format, with \x02 (STX) and \x03 (ETX) as the start
 
 <!-- Motivation for the creation of this dataset. -->
 
-[More Information Needed]
+There is a lack of modern pretraining mixtures for very small byte-level language models. 
 
 ### Source Data
 
 <!-- This section describes the source data (e.g. news text and headlines, social media posts, translated sentences, ...). -->
 
-[More Information Needed]
+- 55% FineWeb Edu
+- 35% DCLM Edu
+- 10% FineMath
+- 1% Filtered StarCoderData Python (Educational Score ≥3 as in Smollm Corpus)
+- 0.1% WritingPrompts Curated