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- What is decider? - Computer Science Stack Exchange
My understanding of decider is that a machine is a decider if it always halts with output $0$ or $1$ (or whatever you prefer meaning "YES" and "NO") However, I am confused by the definition that decider is a Turing machine that always halts since there are machines that do always halt with different than $0$ and $1$ outputs
- turing machines - Visualizing a Non Deterministic Decider - Computer . . .
Further, I also know that a Decider is a TM that halts on all possible inputs Now, my question is how can I visualize a Non determistic Decider? Does a non-determistic decider mean a TM where All the copies must halt, (OR) At-least one copy halts Kindly explain in detail why so Thanks
- Confused about definition of a non-deterministic decider
Fallowing are some definitions from book quot;introduction to theory of computation quot; by sipser a nondeterministic turing machine is a decider if all its computation branches halt on all inp
- computability - Constructing a decider for a language - Computer . . .
I understand that i would first introduce a Turing Machine with an input string and simulate it but I'm lost in the next stage of constructing a decider By the way, enumerators are Turing Machines that outputs a sequence of strings Could anyone please explain on how do i construct a decider for the language L that uses both enumerators M1 and M2?
- Turing Machines: What is the difference between recognizing, deciding . . .
A total Turing machine or a decider is a machine that always halts regardless of the input If a TM decides a language, then it is decider by definition or a total Turing Machine Edit: To answer some of the questions in the OP's comments: A language does not define a Turing Machine
- Finding a decider - Computer Science Stack Exchange
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- complexity theory - Confused about the concept of deciding in . . .
$\begingroup$ In the definitions that I have seen, the only way for a (decider) TM to halt is to reach either the accepting or the rejecting state Here is a source: Bovet, Crescenzi Introduction to the theory of complexity $\endgroup$
- turing machines - Whats the difference between an oracle and a decider . . .
An oracle doesn’t have an implementation, it is just a black box giving answer to any particular question (most importantly, the ones we cannot answer), whereas a decider has to be well defined Turing machine In other words, we must know how a decider gets the answer, meaning it cannot answer any question
- Undecidability of TMs recognizing a decidable language
You want to prove that the language of deciders—the language of Turing machines whose language is decidable—is not recognizable
- What is the correct halt status for an input to a simulating . . .
If simulating halt decider H correctly simulates its input D until H correctly determines that its simulated D would never stop running unless aborted then H can abort its simulation of D and correctly report that D specifies a non-halting sequence of configurations Complete halt deciding system (Visual Studio Project)
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