Fast Numerical Solver of Ising Optimization Problems via Pruning and Domain Selection

• URL: http://arxiv.org/abs/2312.05837v2
• Date: Tue, 3 Sep 2024 14:59:03 GMT
• Title: Fast Numerical Solver of Ising Optimization Problems via Pruning and Domain Selection
• Authors: Langyu Li, Daoyi Dong, Yu Pan,
• Abstract summary: We propose a fast and efficient solver for the Ising optimization problems. Our solver can be an order of magnitude faster than the classical solver, and at least two times faster than the quantum-inspired annealers.
• Score: 4.460518115427853
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum annealers, coherent Ising machines and digital Ising machines for solving quantum-inspired optimization problems have been developing rapidly due to their near-term applications. The numerical solvers of the digital Ising machines are based on traditional computing devices. In this work, we propose a fast and efficient solver for the Ising optimization problems. The algorithm consists of a pruning method that exploits the graph information of the Ising model to reduce the computational complexity, and a domain selection method which introduces significant acceleration by relaxing the discrete feasible domain into a continuous one to incorporate the efficient gradient descent method. The experiment results show that our solver can be an order of magnitude faster than the classical solver, and at least two times faster than the quantum-inspired annealers including the simulated quantum annealing on the benchmark problems. With more relaxed requirements on hardware and lower cost than quantum annealing, the proposed solver has the potential for near-term application in solving challenging optimization problems as well as serving as a benchmark for evaluating the advantage of quantum devices.

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