pushdown automaton
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Pushdown automaton — In automata theory, a pushdown automaton (PDA) is a finite automaton that can make use of a stack containing data. Operation Pushdown automata differ from normal finite state machines in two ways: # They can use the top of the stack to decide… … Wikipedia
Deterministic pushdown automaton — In automata theory, a pushdown automaton is a finite automaton with an additional stack of symbols; its transitions can take the top symbol on the stack and depend on its value, and they can add new top symbols to the stack. A deterministic… … Wikipedia
Embedded pushdown automaton — An embedded pushdown automaton or EPDA is a computational model that parse languages in the tree adjoining grammar (TAG). It is similar to the context free grammar parsing pushdown automaton, except that instead of using a stack (data structure)… … Wikipedia
Counter automaton — In computer science, a counter automaton is a Pushdown automaton with only two symbols, A and the initial symbol in (the finite set of stack symbols). This class of automata can recognize a subset of Context free languages, for instance the… … Wikipedia
Nested stack automaton — In automata theory, a nested stack automaton is a finite automaton that can make use of a stack containing data which can be additional stacks.[1] A nested stack automaton may read its stack, in addition to pushing or popping it. A nested stack… … Wikipedia
Deterministic automaton — is a concept of automata theory in which the outcome of a transition from one state to another given a certain input can be predicted for every occurrence. A common deterministic automaton is a deterministic finite state machine (sometimes… … Wikipedia
Nested word — In computer science, more specifically in automata and formal language theory, nested words are a concept proposed by Alur and Madhusudan as a joint generalization of words, as traditionally used for modelling linearly ordered structures, and of… … Wikipedia
Chomsky hierarchy — Within the field of computer science, specifically in the area of formal languages, the Chomsky hierarchy (occasionally referred to as Chomsky–Schützenberger hierarchy) is a containment hierarchy of classes of formal grammars. This hierarchy of… … Wikipedia
Computation history — In computer science, a computation history is a sequence of steps taken by an abstract machine in the process of computing its result. Computation histories are frequently used in proofs about the capabilities of certain machines, and… … Wikipedia
Turing machine — For the test of artificial intelligence, see Turing test. For the instrumental rock band, see Turing Machine (band). Turing machine(s) Machina Universal Turing machine Alternating Turing machine Quantum Turing machine Read only Turing machine… … Wikipedia
