approximability
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Graph coloring — A proper vertex coloring of the Petersen graph with 3 colors, the minimum number possible. In graph theory, graph coloring is a special case of graph labeling; it is an assignment of labels traditionally called colors to elements of a graph… … Wikipedia
Optimization problem — In mathematics and computer science, an optimization problem is the problem of finding the best solution from all feasible solutions. Optimization problems can be divided into two categories depending on whether the variables are continuous or… … Wikipedia
Dominating set — For Dominator in control flow graphs, see Dominator (graph theory). Dominating sets (red vertices). In graph theory, a dominating set for a graph G = (V, E) is a subset D of V such that every vertex not in D is joined to at… … Wikipedia
L-reduction — is a transformation of optimization problems which keeps the approximability features. L reductions in studies of approximability of optimization problems play a similar role to that of polynomial reductions in the studies of computational… … Wikipedia
Closest string — In theoretical computer science, closest string is the name of an NP hard computational problem, which tries to find the geometrical center of a set of input strings. To understand the word center it is necessary to define a distance between two… … Wikipedia
Maximum cut — A maximum cut. For a graph, a maximum cut is a cut whose size is at least the size of any other cut. The problem of finding a maximum cut in a graph is known as the max cut problem. The problem can be stated simply as follows. One wants a subset… … Wikipedia
Analysis of algorithms — To analyze an algorithm is to determine the amount of resources (such as time and storage) necessary to execute it. Most algorithms are designed to work with inputs of arbitrary length. Usually the efficiency or running time of an algorithm is… … Wikipedia
Reduction — Reduction, reduced, or reduce may refer to:cienceChemistry*Reduction – chemical reaction in which atoms have their oxidation number (oxidation state) changed. **Reduced gas – a gas with a low oxidation number **Ore reduction: see… … Wikipedia
Travelling salesman problem — The travelling salesman problem (TSP) is an NP hard problem in combinatorial optimization studied in operations research and theoretical computer science. Given a list of cities and their pairwise distances, the task is to find a shortest… … Wikipedia
Multivalued function — This diagram does not represent a true function, because the element 3 in X is associated with two elements, b and c, in Y. In mathematics, a multivalued function (shortly: multifunction, other names: set valued function, set valued map, multi… … Wikipedia
