Update README.md

README.md

@@ -7,20 +7,23 @@ size_categories:
 
 ## Composition and usage
 
-This dataset contains 11.5 billion words and consists of the following splits:
+This dataset contains 11.5 billion words of texts written in Croatian, Bosnian, Montenegrin and Serbian.
+
+It is an extension of the [BERTić-data dataset](http://hdl.handle.net/11356/1426), a 8.4 billion-words collection used to pre-train the [BERTić model](https://huggingface.co/classla/bcms-bertic) ([paper](https://aclanthology.org/2021.bsnlp-1.5.pdf)). In this dataset there are two major additions: the MaCoCu HBS crawling collection, a collection of crawled news items, and the [mC4](https://huggingface.co/datasets/mc4) HBS dataset. The order of deduplication is as stated in the list of parts/splits:
 * macocu_hbs
 * hr_news
-* bswac
-* cc100_hr
-* cc100_sr
-* classla_sr
-* classla_hr
-* classla_bs
-* cnrwac
-* hrwac
 * mC4
-* riznica
-* srwac
+* BERTić-data
+  * hrwac
+  * classla_hr
+  * cc100_hr
+  * riznica
+  * srwac
+  * classla_sr
+  * cc100_sr
+  * bswac
+  * classla_bs
+  * cnrwac
 
 The dataset was deduplicated with `onion` on the basis of 5-tuples of words with duplicate threshold set to 90%.