Journal of Building Engineering, Volume (2), Year (2015-6) , Pages (17-23)

Title : ( Optimality gap of experts' decisions in concrete delivery dispatching )

Authors: Mojtaba Maghrebi , S. Travis Waller , Claude Sammut ,

Citation: BibTeX | EndNote

Abstract

Concretedeliverydispatchingsuffersfromalackofpracticalsolutionsandtherefore,intheabsenceof automatic solutions,expertsarehiredtohandlethistask.Inaddition,theconcretedeliverydispatching problem canbemodelledmathematicallybutitcanonlysolveuptomediumsizesofthisproblemwithin a practicaltime.Thispaperattemptstoanswerthequestionofhowmuchwecanrelyonexperts\\\'de- cisions. First,theconcretedeliveryproblemispresented.Second,abenchmarkfortheproblemis achieved; twoheuristicmethodsareusedforthoseinstancesthattheirexactsolutionsarenotavailable. Finally,theexperts\\\'decisionsarecomparedwiththeobtainedbenchmarkstoassesstheoptimalitygap of theexperts.A field datasetwhichbelongstoanactiveReadyMixedConcrete(RMC)isusedtoevaluate the proposedidea.Theresultsshowthatexperts\\\'decisionsareneartooptimum,withanaverageac- curacy of90%.However,aftercomparingindividualdecisionsbetweenoptimisationmodelsandthe experts\\\'decisions,wecanconcludethatoptimisationmodelsonlytrytoachievethelowestcost,while the expertprefersamorestabledispatchingsystematslightlyhighercost

Keywords

, Concretedelivery ReadyMixedConcrete Experts\\\' decisions IntegerProgramming MixedIntegerProgramming Robust, GA Sequential, GA
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@article{paperid:1074983,
author = {Maghrebi, Mojtaba and S. Travis Waller and Claude Sammut},
title = {Optimality gap of experts' decisions in concrete delivery dispatching},
journal = {Journal of Building Engineering},
year = {2015},
volume = {2},
month = {June},
issn = {2352-7102},
pages = {17--23},
numpages = {6},
keywords = {Concretedelivery ReadyMixedConcrete Experts\\\' decisions IntegerProgramming MixedIntegerProgramming Robust-GA Sequential-GA},
}

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%0 Journal Article
%T Optimality gap of experts' decisions in concrete delivery dispatching
%A Maghrebi, Mojtaba
%A S. Travis Waller
%A Claude Sammut
%J Journal of Building Engineering
%@ 2352-7102
%D 2015

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