Credits
This tool was created thanks to papers given below:
[1] SAKAKIBARA, Yasubumi; KONDO, Mitsuhiro. GA-based learning of context-free grammars using tabular representations. In: ICML. 1999. p. 354-360.
[2] MAYER, Mikaël; HAMZA, Jad. Optimal test sets for context-free languages. arXiv preprint arXiv:1611.06703, 2016.
[3] YOUNGER, Daniel H. Recognition and parsing of context-free languages in time n3. Information and control, 1967, 10.2: 189-208.
[4] STARKIE, Bradford; COSTE, François; VAN ZAANEN, Menno. The Omphalos context-free grammar learning competition. In: International Colloquium on Grammatical Inference. Springer, Berlin, Heidelberg, 2004. p. 16-27.