Update README.md

README.md

@@ -26,4 +26,28 @@ dataset_info:
     num_examples: 317
   download_size: 50645
   dataset_size: 1318367
----
+---
+
+This is a dataset for CFG-based GflowNet development.
+The ebnf style CFG for numbers are:
+
+```
+root ::= number_list
+
+number_list ::= number (number_list)?
+
+number ::= odd even | even odd
+
+even ::= "0," | "2," | "4," | "6," | "8," | "10," | "12," | "14," | "16," | "18," | "20,"
+
+odd ::= "1," | "3," | "5," | "7," | "9," | "11," | "13," | "15," | "17," | "19,"
+
+```
+
+However, this CFG cannot satisfy all the requirments. The CFG give a chunk of numbers where the transition between chunks always failed to satisfy our requirment:
+
+**Total correct ≤ Total grammar Agreed**
+
+~6332/100000 (how many correct numbers in CFG generated numbers)
+
+So we need RL or Gflow to bridge the gap between CFG and the targets.