ZHENG Qifu, LIU Huazhang. 改进的全息搜索策略及其在化工优化中的应用[J]. CIESC Journal, 2006, (10).
DOI:
ZHENG Qifu, LIU Huazhang. 改进的全息搜索策略及其在化工优化中的应用[J]. CIESC Journal, 2006, (10).DOI:
改进的全息搜索策略及其在化工优化中的应用
摘要
Abstract
Holographic research strategy (HRS) is a novel determinate optimization method.The principle of HRS is based on a special
two-dimensional presentation of a multidimensional space.This presentation was termed two-dimensional hologram.HRS translated the optimization operation in multidimensional space into finding better points in the neighborhood around the current best data points.In this way
HRS can find the global optimal parameters in all probability.However
HRS can〖DK〗’t be applied to optimize continuous variables
it was only used in optimizing discrete systems.Therefore
it is necessary of improving HRS and ensuring the optimization algorithm can being applied in multidimensional continuous systems.Modified holographic research strategy (MHRS) was designed for the purpose.MHRS changed continuous variables into discrete variables in the searching region firstly
and then found the optimum in the discrete system.In order to reduce the deviation between the continuous system and the discrete system
MHRS adopted iterative algorithm to shrink the searching region gradually according to the location of the current optimal value.Furthermore
in order to improve the efficiency of HRS in searching for the global optimum
random mutation operator was added to the optimizing process.Ten-dimensional Rastrigin function was applied to testing MHRS
the results demonstrated that its global optimization performance is superior to one of eugenic evolution genetic algorithm (EGA).Further
MHRS was applied to estimate the kinetic model parameters of residue hydrofining.Satisfactory results were obtained.