Experiments in quadratic 0-1 programming
Mathematical Programming: Series A and B
Computers and Operations Research
Solving quadratic (0,1)-problems by semidefinite programs and cutting planes
Mathematical Programming: Series A and B
Tabu Search
Computers and Intractability: A Guide to the Theory of NP-Completeness
Computers and Intractability: A Guide to the Theory of NP-Completeness
Global Optimality Conditions for Quadratic Optimization Problems with Binary Constraints
SIAM Journal on Optimization
Evolution towards the Maximum Clique
Journal of Global Optimization
Finding independent sets in a graph using continuous multivariable polynomial formulations
Journal of Global Optimization
Discrete Applied Mathematics
Ellipsoidal Approach to Box-Constrained Quadratic Problems
Journal of Global Optimization
Lower Bound Improvement and Forcing Rule for Quadratic Binary Programming
Computational Optimization and Applications
On a Polynomial Fractional Formulation for Independence Number of a Graph
Journal of Global Optimization
Local search heuristics for Quadratic Unconstrained Binary Optimization (QUBO)
Journal of Heuristics
Global equilibrium search applied to the unconstrained binary quadratic optimization problem
Optimization Methods & Software
Global optimality conditions for quadratic 0-1 optimization problems
Journal of Global Optimization
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This article investigates the local maxima properties of a box-constrained quadratic optimization formulation of the maximum independent set problem in graphs. Theoretical results characterizing binary local maxima in terms of certain induced subgraphs of the given graph are developed. We also consider relations between continuous local maxima of the quadratic formulation and binary local maxima in the Hamming distance-1 and distance-2 neighborhoods. These results are then used to develop an efficient local search algorithm that provides considerable speed-up over a typical local search algorithm for the binary Hamming distance-2 neighborhood.