Application of modified elitist teaching-learning-based optimization algorithm to process optimization of methanol synthesis

Elitist teaching-learning-based optimization (ETLBO) algorithm is inspired by practical teaching-learning process. A novel group search optimizer, modified elitist teaching-learning-based optimization (mETLBO), was proposed to improve low precision and poor stability of the ETLBO. First, an autonomous learning process was introduced to strengthen local search of high quality solution so as to improve algorithm's elite-searching speed. Second, differentiated support and self-adaptive strategy providing appropriate and flexible learning approach to students at various levels, were applied to offer desirable assistance and balance searching rate and accuracy of the algorithm. Third, global searching ability of the algorithm was enhanced by increasing communication frequency between students. Optimization results on standardized functions show that the proposed algorithm is obviously superior to the original one in performance and efficiency. Finally, satisfactory results were achieved by applying the improved algorithm to process optimization with mechanism model of methanol synthesis. © All Right Reserved.