Why is non-determinism a useful concept? - Computer Science Stack Exchange Crucially, every outcome the nondeterministic algorithm produces is valid, regardless of which choices the algorithm makes while running A large number of problems can be conceptualized through nondeterministic algorithms, including the most famous unresolved question in computing theory, P vs NP
How does a nondeterministic Turing machine work? What is differences between deterministic and nondeterministic Turing machines? Different but equivalent models of NDTM In particular, what is this frequently used phrase "nondeterministically gue
What is the difference between non-determinism and randomness? As in the definition of NP, a nondeterministic machine accepts an input if there exists at least one possible accepting computation, and it rejects the input if all computations reject Randomness comes into play as follows: You can choose uniformly at random a single path of computation from such a non-deterministic machine as stated above
decidability - Nondeterministic Turing Machines as deciders, versus NP . . . A deterministic Turing machine can simply simulate all the executions of a nondeterministic Turing machine (being careful to interleave executions in the case of recognizers) Very broadly speaking, one might say that complexity theorists don't talk about recognizers, and computability theorists don't talk about nondeterministic Turing machines
Deterministic vs. Non-Deterministic PDA? - Computer Science Stack Exchange You'll need to complete a few actions and gain 15 reputation points before being able to upvote Upvoting indicates when questions and answers are useful What's reputation and how do I get it? Instead, you can save this post to reference later
computability - What is the difference between quantum TM and . . . A nondeterministic Turing machine can, easily Work by Aaronson and Archipov (The Computational Complexity of Linear Optics) suggests that nondeterministic Turing machines are unlikely to be able to efficiently simulate certain experiments of linear optics which could be simulated by a quantum Turing machine