In this study, a new stochastic
search approach is presented as a faster and more efficient alternative to classic
filled function search strategy. An unconstrained global optimization method
based on clustering and parabolic approximation (GOBC-PA) has been used as a
stochastic method for accelerating the L type filled function as a
deterministic method. Searching the basin regions of the filled function is
performed by GOBC-PA. The methods used in this study are preferred due to their
popularity, speed and robustness. The objective function of the stochastic
method is the epsilon value of the gradient that gives the location of basin
region. Therefore, the whole purpose of the stochastic method is not to find
the global optimum but to find the basin region. The role of finding the global
minimum has been left to the deterministic method. The developed method has
been tested against classical filled function using 11 benchmark functions and process
repeated 10 times. When the obtained results are examined, it is seen that the stochastic
search approach has superiority over the mean error, standard deviation and
elapsed time values according to the classical approach. These results show
that the combination of deterministic and stochastic methods can be more
successful in finding the global minimum against the classic deterministic
method.
Primary Language | English |
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Subjects | Engineering |
Journal Section | Makaleler |
Authors | |
Publication Date | January 31, 2020 |
Submission Date | July 25, 2019 |
Acceptance Date | October 15, 2019 |
Published in Issue | Year 2020 Volume: 7 Issue: 1 |