# A discrete-time approximation technique for the time-cost trade-off in PERT networks

Amir Azaron; Masatoshi Sakawa; Reza Tavakkoli-Moghaddam; Nima Safaei

RAIRO - Operations Research (2007)

- Volume: 41, Issue: 1, page 61-81
- ISSN: 0399-0559

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topAzaron, Amir, et al. "A discrete-time approximation technique for the time-cost trade-off in PERT networks ." RAIRO - Operations Research 41.1 (2007): 61-81. <http://eudml.org/doc/250114>.

@article{Azaron2007,

abstract = {
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.
},

author = {Azaron, Amir, Sakawa, Masatoshi, Tavakkoli-Moghaddam, Reza, Safaei, Nima},

journal = {RAIRO - Operations Research},

keywords = {Project management; multiple objective programming;
optimal control; markov processes; simulated annealing.},

language = {eng},

month = {6},

number = {1},

pages = {61-81},

publisher = {EDP Sciences},

title = {A discrete-time approximation technique for the time-cost trade-off in PERT networks },

url = {http://eudml.org/doc/250114},

volume = {41},

year = {2007},

}

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

DA - 2007/6//

PB - EDP Sciences

VL - 41

IS - 1

SP - 61

EP - 81

AB -
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.

LA - eng

KW - Project management; multiple objective programming;
optimal control; markov processes; simulated annealing.

UR - http://eudml.org/doc/250114

ER -

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