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Questions about decision problems that can be solved on nondeterministic Turing machines in time polynomial in the length of the input.
Algorithms for finding an element in some specified data-structure (most commonly, in a tree).
Questions about programs that read code in one language (source language) and translate it into an equivalent program in another language (target language).
Questions about the algorithmic problems of finding shortest paths between nodes in a graph.
Satisfiability (SAT) is the problem of determining whether there is a variable assignment that fulfills a given Boolean formula.
Questions about design and properties of agents that act in a dynamic environment and make decisions towards some goal without user control.
Questions about objects such as functions, algorithms or data structures that are expressed using "smaller" instances of themselves.
a rooted tree in which each node has no more than two children
Questions about algorithms that solve problems up to some bounded error.
A sequential random-access data structure whose size can typically not be changed after creation.
λ-calculus is a formal system for function definition, function application and recursion which forms the mathematical basis of functional programming.
formal systems to specify properties of objects
Network structure inspired by simplified models of biological neurons (brain cells). Neural networks are trained to "learn" by supervised and unsupervised techniques, and can be used to solve optimiz…
Questions about state machines with a single stack for memory. They characterize the class of context-free languages.
A question in some formal system with a yes-or-no answer.
Necessary properties of formal langagues in certain classes that rely on closure against repetition of certain subwords. Make sure your question isn't covered by applying the techniques in https://cs…
Questions about sequences of symbols, sets thereof and their properties as well as uses.
Asymptotic analyses of the space needed to run algorithms.
Questions about the branch of mathematics concerned with modelling and analysing random phenomena.
Questions about relationships between complexity classes.
Questions about discrete mathematics, the study of mathematical structures that are fundamentally discrete rather than continuous.
The definition of the set of allowable operations used for computation and their respective costs. Some examples of models include Turing machines, recursive functions, lambda calculus, and production…
Questions about graph traversal algorithms such as BFS and DFS.
Questions about algorithms whose behaviour is determined not only by its input but also by a source of random numbers.
Questions about algorithms that decide whether a given string belongs to a fixed formal language.
Questions about the challenges of solving problems with multiple cooperating but separate agents.
Questions about finite and infinite sets and multisets, related data structures and concepts.
Optimization with a linear objective function, subject to linear equality and linear inequality constraints.
Questions concerning the Halting problem which is to decide whether a given a program halts on a given input.
Questions about algorithms that make at each step the locally optimal choice.
Use for algorithms, algorithm-analysis and complexity-theory questions that aim for polynomial running time resp. time complexity. Such questions often are are reference-requests or about runtime-anal…
Functional programming is a programming paradigm which primarily uses functions as means for building abstractions and expressing computations that comprise a computer program.
Questions about operations on objects of some kind that result in objects of the same kind.
Questions about problems that arise when you connect multiple computers to form a network.
Questions about automata, formal grammars or other computation-models that specifically relate to the use of nondeterminism. Not to be confused with randomness or ambiguity!
Questions that ask for or about correctness proofs of algorithms.