Finite Automata
What do you understand by the term Finite Automata ?
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Finite automata is a simple model of computation
It reads input from left to right, and one symbol at a time
It maintains state: The information regarding what seen so far (“memory”)
Begin with deterministic finite automata (DFA)
It can be described by two ways that is, by diagram or formally.
Let s1 and s2 be two strings of lengths m and n respectively. By definition, a superstring of s1 and s2 is one which contains s1 and s2 as substrings. Give a dynamic programming algorithm to compute a shortest superstring of t
Describe the theorem that a language L is recognized by a DFA if and only if L is illustrated by a regular expression.
Explain DFA diagrams and DFA operation in brief ?
Proof the theorem that the class of regular languages is closed under union; that is, if L1 is recognized by a NFA and L2 is recognized by a NFA, then L1 υ L2 is recognized by a NFA as well.
Give an algorithm that, given a grammar G = (V, Σ, R, S), decides whether the grammar G can derive the empty string.
Let α be a regular expression of length n. (a) Using procedures shown in class, if we convert α into a regular expression β such that L(β) = L(α). How long β might be? Give a reasonably tight upper bound.
Define the term computation in TOC ?
Explain briefly NFA operation with example.
Describe the Strategy of TOC computation box in brief ?
Explain how light TP monitors allow distributed applications based on RPC to have transaction properties.
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