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We develop a discrete-time approximation technique dealing with the time-cost trade-off problem in PERT networks. It is assumed that the activity durations are independent random variables with generalized Erlang distributions, in which the mean duration of each activity is a non-increasing function of the amount of resource allocated to it. It is also assumed that the amount of resource allocated to each activity is controllable. Then, we construct an optimal control problem with three conflicting objective functions. Solving this optimal control problem, optimally, is impossible. Therefore, a discrete-time approximation technique is applied to solve the original multi-objective optimal control problem, using goal attainment method. To show the advantages of the proposed technique, we also develop a Simulated Annealing (SA) algorithm to solve the problem, and compare the discrete-time approximation results against the SA and also the genetic algorithm results.
@article{RO_2007__41_1_61_0,
author = {Azaron, Amir and Sakawa, Masatoshi and Tavakkoli-Moghaddam, Reza and Safaei, Nima},
title = {A discrete-time approximation technique for the time-cost trade-off in {PERT} networks},
journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
pages = {61--81},
publisher = {EDP-Sciences},
volume = {41},
number = {1},
year = {2007},
doi = {10.1051/ro:2007005},
mrnumber = {2310540},
language = {en},
url = {http://geodesic.mathdoc.fr/articles/10.1051/ro:2007005/}
}
TY - JOUR AU - Azaron, Amir AU - Sakawa, Masatoshi AU - Tavakkoli-Moghaddam, Reza AU - Safaei, Nima TI - A discrete-time approximation technique for the time-cost trade-off in PERT networks JO - RAIRO - Operations Research - Recherche Opérationnelle PY - 2007 SP - 61 EP - 81 VL - 41 IS - 1 PB - EDP-Sciences UR - http://geodesic.mathdoc.fr/articles/10.1051/ro:2007005/ DO - 10.1051/ro:2007005 LA - en ID - RO_2007__41_1_61_0 ER -
%0 Journal Article %A Azaron, Amir %A Sakawa, Masatoshi %A Tavakkoli-Moghaddam, Reza %A Safaei, Nima %T A discrete-time approximation technique for the time-cost trade-off in PERT networks %J RAIRO - Operations Research - Recherche Opérationnelle %D 2007 %P 61-81 %V 41 %N 1 %I EDP-Sciences %U http://geodesic.mathdoc.fr/articles/10.1051/ro:2007005/ %R 10.1051/ro:2007005 %G en %F RO_2007__41_1_61_0
Azaron, Amir; Sakawa, Masatoshi; Tavakkoli-Moghaddam, Reza; Safaei, Nima. A discrete-time approximation technique for the time-cost trade-off in PERT networks. RAIRO - Operations Research - Recherche Opérationnelle, Tome 41 (2007) no. 1, pp. 61-81. doi: 10.1051/ro:2007005
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