Shu Tanaka

PyQUBO: Python Library for Mapping Combinatorial Optimization Problems to QUBO Form

2021 · IEEE Transactions on Computers

We present PyQUBO, an open-source Python library for constructing quadratic unconstrained binary optimizations (QUBOs) from the objective functions and the constraints of optimization problems. PyQUBO enables users to prepare QUBOs or Ising models for various …

Dynamical process of a bit-width reduced Ising model with simulated annealing

2023 · arXiv (Cornell University)

Ising machines have attracted attention as efficient solvers for combinatorial optimization problems, which are formulated as ground-state (lowest-energy) search problems of the Ising model. Due to the limited bit-width of coefficients on Ising machines, the …