TY - JOUR ID - 89552 TI - Gravitational search algorithm for step fixed charge transportation problems JO - Annals of Optimization Theory and Practice JA - AOTP LA - en SN - 2588-3666 AU - Taghaodi, Rohollah AD - Department of Mathematics, Kashan Branch, Islamic Azad University, Kashan, Iran Y1 - 2019 PY - 2019 VL - 2 IS - 1 SP - 1 EP - 9 KW - Step fixed-charge transportation problem KW - NP-hard problem KW - Gravitational Search Algorithm KW - Genetic Algorithm DO - 10.22121/aotp.2019.172309.1018 N2 - Step fixed-charge transportation problem is an extended version of the fixed charge transportation problem, is one of the most important problems in transportation research area. To tackle such an NP-hard problem, we present Gravitational Search Algorithm (GSA). We solve the randomly generated problems by GSA and also with Genetic Algorithm (GA) to compare them. The obtained results show the proficiency of GSA comparison with GA. UR - https://aotp.fabad-ihe.ac.ir/article_89552.html L1 - https://aotp.fabad-ihe.ac.ir/article_89552_e641630387157fd3ba11bdf296649cf8.pdf ER -