Update README.md

README.md

@@ -26,3 +26,7 @@ cancer,cardiac,endocrine,gastrointestinal,genetic,healthy,infection,neurological
 
 `index2docid.txt`:
 - simple mapping of index to NCTID's for filtering/reference throughout IR program, corresponding to vector, texts representation order
+
+`qrels-clinical_trials.txt`, `trec_21_judgments.txt'
+
+- files containing mappings from topics to document id's with associated relevancy judgments for TREC21 and KZ datasets (see `datasets/ctmatch_classification`)