Question

Context Free Grammar (CFG) is given as follows: S → ABA A → aA | ε B → bBc | ε First check above CFG contains ε-productions, unit productions and useless symbols or not. If yes, then eliminate such productions. Step 1) Eliminate ε-productions Step 2) Eliminate unit productions Step 3) Eliminate useless symbols Step 4) After eliminating ε-productions, unit productions and useless symbols from the above grammar, convert it into Chomsky Normal Form (CNF).

Name: context free grammar cfg is given as follows s aba a aa b bbc first check above cfg contains productions unit productions and useless symbols or not if yes then eliminate such productions st 08379
Uploaded: 2023-05-03T07:11:36-08:00
Duration: 3 min 11 s
Channel: Supreeta N
Description: context free grammar cfg is given as follows s aba a aa b bbc first check above cfg contains productions unit productions and useless symbols or not if yes then eliminate such productions st 08379

          Context Free Grammar (CFG) is given as follows:
S → ABA
A → aA | ε
B → bBc | ε
First check above CFG contains ε-productions, unit productions and useless symbols
or not. If yes, then eliminate such productions.
Step 1) Eliminate ε-productions
Step 2) Eliminate unit productions
Step 3) Eliminate useless symbols
Step 4) After eliminating ε-productions, unit productions and useless symbols from
the above grammar, convert it into Chomsky Normal Form (CNF).

Added by Steven B.

Computer Science and Information Technology

Trishna Knowledge Systems 2018 Edition

Instant Answer

Solved by Expert Supreeta N

05/03/2023

Step 1

The ε-production is A → ε. To eliminate ε-productions, we need to modify the productions that contain A. The modified productions will include alternatives that do not use A. The original productions are: - S → ABA - A → aA | ε - B → bBc | ε After eliminating Show more…

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Context Free Grammar (CFG) is given as follows: S → ABA A → aA | ε B → bBc | ε First check above CFG contains ε-productions, unit productions and useless symbols or not. If yes, then eliminate such productions. Step 1) Eliminate ε-productions Step 2) Eliminate unit productions Step 3) Eliminate useless symbols Step 4) After eliminating ε-productions, unit productions and useless symbols from the above grammar, convert it into Chomsky Normal Form (CNF).