CNF stands for Chomsky normal form. A CFG(context free grammar

What do you mean by Chomsky normal form?

Chomsky Normal Form. Definition: A CFG is in Chomsky normal form if and only if all production rules are of the form A → BC or A → x with variables A,B,C∈V and x∈T. (Sometimes rule S→λ is also allowed.)

What is the rule of Chomsky normal form CNF?

A context free grammar (CFG) is in Chomsky Normal Form (CNF) if all production rules satisfy one of the following conditions: A non-terminal generating a terminal (e.g.; X->x) A non-terminal generating two non-terminals (e.g.; X->YZ) Start symbol generating ε.