FINITE AUTOMATA
|
PUSHDOWN AUTOMATA
|
A finite automaton (FA) is a simple idealized machine
used to recognize patterns within input taken from some character set
|
A pushdown automaton (PDA) is a type of automaton that employs a stack.
|
It
doesn’t has the capability to store long sequence of input alphabets
|
It has
stack to store the input alphabets
|
Finite
Automata can be constructed for Type-3 grammar
|
Pushdown
Automata can be constructed for Type-2 grammar
|
Input
alphabets are accepted by reaching “final
states”
|
Input
alphabets are accepted by reaching :
1.
Empty
stack
2.
Final
state
|
NFA
can be converted into equivalent DFA
|
NPDA
has more capability than DPDA
|
It
consist of 5 tuples:
L =
{Q, q0, ∑, F, σ}
|
It
consists of 7 tuples:
L = {Q,
q0, ∑, F, ᴦ, σ,
z0 }
|
Finite
automata can be constructed for regular language
|
Pushdown
automata can be constructed for context free grammar
|
Tuesday, 14 February 2017
Difference Between Finite Automata and Push down Automata
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thank you very much @Monika Kumari
ReplyDeletekeep doing great work!! :)
Thank u
Deletetysm..
ReplyDeleteplease share the difference between CSG and Unrestricted grammar and PDA vs TM
ReplyDeleteGood..
ReplyDeletecan u tell me... which one is more reliable and efficient in natural language processing?
ReplyDeleteFinite state machine [FSM] or Push down Automata, which one is more reliable and efficient in natural language processing?
ReplyDeletethanks for the information about FA & PDA
ReplyDeleteplease anyone shear CFG vs DFA
ReplyDeleteFinite Automata (FA) and Push Down Automata (PDA) both are used to express the languages. The Finite Automata is deterministic and Push Down Automata is deterministic and as well as non-deterministic.
ReplyDeleteYou are required to give comments on the following statements:
• Whether the PDA accepts all the languages that have been accepted by the FA? Yes or No, explain in either case with an example.
• Whether the FA accepts all the languages that have been accepted by the PDA? Yes or No, explain in either case with an example.
Instructions:
Write “Yes” in the first line if you agreed with the first statement and write “No” If you disagree.
Then write logic or appropriate method to support your decision in next line.
Follow the same procedure for the second statement.
Excellent grade is for excellent comments only.
Plz help in this regard.
Thnx so much very use full
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