TY - JOUR ID - 1492 TI - TunnedTTStochastic Directional Search: an Efficient Heuristic for Structural Optimization of Building Frames JO - Scientia Iranica JA - SCI LA - en SN - 1026-3098 AU - Shahrouzi, Mohsen AU - Pashaei, Mahdi AD - Department of Engineering, Kharazmi University, Tehran, Iran Y1 - 2013 PY - 2013 VL - 20 IS - 4 SP - 1124 EP - 1132 KW - Stochastic Directional Search KW - Structural Design KW - Sizing Optimization KW - Building Frame DO - N2 - Performance of an optimization heuristic highly depends to the method it employs to represent and decompose the search space. A class of optimization methods including swarm intelligence utilize an especial way of decomposing the search space via specified direction states. The present work expands the idea providing a stochastic directional state search with tuned thresholds for selecting every direction state. The proposed meta-heuristic is then utilized for the problem of structural weight minimization in building frames under lateral and gravitational loading using a finite element analyzer. Treating a number of examples from literature, efficiency and effectiveness of the proposed method is shown superior to some other meta-heuristics including an improved particle swarm optimizer UR - https://scientiairanica.sharif.edu/article_1492.html L1 - https://scientiairanica.sharif.edu/article_1492_f3cea9b02cc96faaa2e26078828abcc7.pdf ER -