A hybrid heuristic based on GRASP and RVND metaheuristics for the Prize-collecting Covering Tour Problem

Author(s):  
Glaubos CLIMACO ◽  
Isabel Rosseti ◽  
Rogerio Da Silva ◽  
Marcos Guerine
Author(s):  
glaubos climaco ◽  
Isabel Rosseti ◽  
Rogério Da Silva ◽  
Marcos Guerine

This paper presents a greedy randomized adaptive search procedure (GRASP) for the prize-collecting covering tour problem, which is the problem of finding a route for traveling teams that provide services to communities geographically distant from large urban locations. We devised a novel hybrid heuristic by combining a reactive extension of the GRASP with Random Variable Neighborhood Search (VND) meta-heuristic for the purpose of solving the PCCTP. Computational experiments were conducted on a PCCTP benchmark from the literature, and the results demonstrate our approach provides a significant improvement in solving PCCTP and comparable with the state-of-the-art, mainly regarding the computational processing time.


2014 ◽  
Vol 24 (7) ◽  
pp. 1589-1600
Author(s):  
Zong-Zhang ZHANG ◽  
Xiao-Ping CHEN

Processes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 219
Author(s):  
Xiang Tian ◽  
Xiyu Liu

In real industrial engineering, job shop scheduling problem (JSSP) is considered to be one of the most difficult and tricky non-deterministic polynomial-time (NP)-hard problems. This study proposes a new hybrid heuristic algorithm for solving JSSP inspired by the tissue-like membrane system. The framework of the proposed algorithm incorporates improved genetic algorithms (GA), modified rumor particle swarm optimization (PSO), and fine-grained local search methods (LSM). To effectively alleviate the premature convergence of GA, the improved GA uses adaptive crossover and mutation probabilities. Taking into account the improvement of the diversity of the population, the rumor PSO is discretized to interactively optimize the population. In addition, a local search operator incorporating critical path recognition is designed to enhance the local search ability of the population. Experiment with 24 benchmark instances show that the proposed algorithm outperforms other latest comparative algorithms, and hybrid optimization strategies that complement each other in performance can better break through the original limitations of the single meta-heuristic method.


2016 ◽  
Vol 251 (1) ◽  
pp. 44-52 ◽  
Author(s):  
Hipólito Hernández-Pérez ◽  
Inmaculada Rodríguez-Martín ◽  
Juan-José Salazar-González

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