Operations Research 2025
Abstract Submission

2178. Polynomially Solvable Cases of the Quadratic Binary Optimization Problem with a Fixed Cardinality Constraint

Invited abstract in session TA-2: Combinatorial Optimization, stream Discrete and Combinatorial Optimization.

Thursday, 8:45-10:15
Room: H4

Authors (first author is the speaker)

1. Thi Thanh Tu Le
Mathematics and Natural Sciences, TU Berlin/ ZIB
2. Thorsten Koch
Applied Algorithmic Intelligence Methods, ZIB / TU Berlin

Abstract

Quadratic unconstrained binary optimization (QUBO) problems and one of their variants, the quadratic binary program with a fixed cardinality constraint, are both well-known NP-hard problems. In some cases, QUBOs can be solved in polynomial time due to special structural properties of the cost matrix; however, this tractability no longer holds when a fixed cardinality constraint is imposed. We explore structural conditions on the cost matrix that lead to polynomial-time solvability of the quadratic binary optimization problem with a fixed cardinality constraint.

Keywords

Status: accepted


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