An improved edition of hybrid simulated annealing and simplex method algorithm, a parallel simulated annealing using simplex method (PSASM), is proposed in this note. The PSASM was evaluated in two functional problems and one 10-bar truss structural design problem, and was compared with other popular stochastic optimization algorithms. It is shown that PSASM performed competitively when compared with other popular stochastic optimization algorithms. However, it must be remembered that a best optimization method does not exist, and it is not expected that the PSASM will work better than other methods for all problems. On the other hand, other implementations for the PSASM should be further examined to improve its performance, for example, the use of other parallelization schemes and penalty functions.
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