• Thumbnail for Pushdown automaton
    of theoretical computer science, a pushdown automaton (PDA) is a type of automaton that employs a stack. Pushdown automata are used in theories about...
    26 KB (4,087 words) - 14:23, 25 May 2025
  • theory, a deterministic pushdown automaton (DPDA or DPA) is a variation of the pushdown automaton. The class of deterministic pushdown automata accepts the...
    10 KB (1,236 words) - 06:55, 31 January 2025
  • powerful than DFAs. A pushdown automaton that is allowed to move either way on its input tape is called two-way pushdown automaton (2PDA); it has been studied...
    12 KB (1,619 words) - 06:31, 14 April 2025
  • An embedded pushdown automaton or EPDA is a computational model for parsing languages generated by tree-adjoining grammars (TAGs). It is similar to the...
    9 KB (1,315 words) - 09:16, 16 December 2023
  • input automaton). NFAs have been generalized in multiple ways, e.g., nondeterministic finite automata with ε-moves, finite-state transducers, pushdown automata...
    29 KB (4,499 words) - 06:31, 14 April 2025
  • notion of a deterministic visibly pushdown automaton is a restriction of the notion of a deterministic pushdown automaton. Following Alur and Madhusudan...
    20 KB (3,063 words) - 05:05, 20 May 2025
  • Pushdown may refer to: Pushdown automaton, a concept in theoretical computer science More generally, anything relating to a stack Push-down (exercise)...
    247 bytes (57 words) - 14:08, 7 October 2023
  • Thumbnail for Automata theory
    pushed and popped. This kind of automaton is called a pushdown automaton. Queue memory: An automaton may have memory in the form of a queue. Such a machine...
    32 KB (3,851 words) - 14:40, 16 April 2025
  • Thumbnail for Chomsky hierarchy
    exactly all languages that can be recognized by a non-deterministic pushdown automaton. Context-free languages—or rather its subset of deterministic context-free...
    12 KB (1,348 words) - 19:34, 7 May 2025
  • are context-free languages that can be accepted by a deterministic pushdown automaton. DCFLs are always unambiguous, meaning that they admit an unambiguous...
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  • pushdown automata, which makes these languages amenable to parsing. Further, for a given CFG, there is a direct way to produce a pushdown automaton for...
    15 KB (2,152 words) - 18:30, 9 December 2024
  • retrieve data from an infinite-memory queue. Its design is similar to a pushdown automaton but differs by replacing the stack with this queue. A queue machine...
    6 KB (785 words) - 23:07, 22 December 2024
  • Thumbnail for Finite-state machine
    finite automaton Communicating finite-state machine Control system Control table Decision tables DEVS Hidden Markov model Petri net Pushdown automaton Quantum...
    40 KB (4,529 words) - 09:20, 27 May 2025
  • language is linear iff it can be generated by a one-turn pushdown automaton – a pushdown automaton that, once it starts popping, never pushes again. Linear...
    6 KB (812 words) - 16:55, 18 February 2025
  • Thumbnail for Deterministic finite automaton
    automaton (DFA)—also known as deterministic finite acceptor (DFA), deterministic finite-state machine (DFSM), or deterministic finite-state automaton...
    29 KB (3,736 words) - 06:30, 14 April 2025
  • Thumbnail for Nested stack automaton
    with embedded pushdown automata, which have less computational power.[citation needed] A (nondeterministic two-way) nested stack automaton is a tuple ⟨Q...
    12 KB (748 words) - 16:57, 24 March 2025
  • possible to prove that any NFA is reducible to an equivalent DFA. Pushdown automaton Similar to the finite state machine, except that it has available...
    21 KB (3,293 words) - 10:24, 12 May 2025
  • the following: State models including Turing machine, pushdown automaton, finite-state automaton, and PRAM Functional models including lambda calculus...
    11 KB (1,215 words) - 13:51, 23 May 2025
  • metric connection the stack alphabet in the formal definition of a pushdown automaton, or the tape-alphabet in the formal definition of a Turing machine...
    62 KB (6,018 words) - 12:18, 25 May 2025
  • Thumbnail for JFLAP
    context-free language include: pushdown automata context-free grammar proof on wikt:nondeterministic pushdown automaton to context-free grammar proof on...
    9 KB (1,144 words) - 02:50, 26 December 2024
  • Guo-Zheng; Giles, C. Lee; Chen, Hsing-Hen (1998). "The Neural Network Pushdown Automaton: Architecture, Dynamics and Training". In Giles, C. Lee; Gori, Marco...
    90 KB (10,419 words) - 09:51, 27 May 2025
  • Context-free grammars specify programming language syntax. Non-deterministic pushdown automata are another formalism equivalent to context-free grammars. Primitive...
    18 KB (2,168 words) - 17:36, 27 May 2025
  • parliamentary debate organizations in the United States Nondeterministic pushdown automaton (also abbreviated NDPDA), This disambiguation page lists articles...
    367 bytes (58 words) - 03:50, 8 June 2019
  • deterministic finite automaton (DFA) deterministic finite state machine deterministic finite tree automaton deterministic pushdown automaton (DPDA) deterministic...
    35 KB (3,135 words) - 18:46, 6 May 2025
  • Thumbnail for Palindrome
    finite automaton to reliably test for palindromes. In addition, the set of palindromes may not be reliably tested by a deterministic pushdown automaton which...
    47 KB (5,145 words) - 11:53, 17 May 2025
  • Thumbnail for Graph-structured stack
    part of Tomita's algorithm, where it replaces the usual stack of a pushdown automaton. This allows the algorithm to encode the nondeterministic choices...
    2 KB (245 words) - 07:46, 11 March 2022
  • Thumbnail for Turing machine
    Turing machine.) A Turing machine is equivalent to a single-stack pushdown automaton (PDA) that has been made more flexible and concise by relaxing the...
    73 KB (9,420 words) - 09:05, 28 May 2025
  • systems communicating with each other. A channel system is similar to a pushdown automaton where a queue is used instead of a stack. Those queues are called...
    17 KB (2,797 words) - 02:46, 26 December 2024
  • conducting polymers Predictive analytics, a form of business analytics Pushdown automaton, in automata theory Pancreatic ductal adenocarcinoma, the main type...
    3 KB (370 words) - 20:54, 5 March 2025
  • grammar is determined by the automaton that accepts it. Deterministic context-free grammars are accepted by deterministic pushdown automata and can be parsed...
    15 KB (1,804 words) - 05:34, 26 May 2025