97b9338bef
git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@268 331e1502-861f-0410-8da2-ba01fb791d7f
129 lines
3.8 KiB
C++
129 lines
3.8 KiB
C++
// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
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//-----------------------------------------------------------------------------
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// FlowShopEval.h
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// (c) OPAC Team (LIFL), Dolphin Project (INRIA), 2007
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/*
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This library...
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Contact: paradiseo-help@lists.gforge.inria.fr, http://paradiseo.gforge.inria.fr
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*/
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//-----------------------------------------------------------------------------
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#ifndef FLOWSHOPEVAL_H_
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#define FLOWSHOPEVAL_H_
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#include "FlowShop.h"
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#include <moeoEvalFunc.h>
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/**
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* Functor
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* Computation of the multi-objective evaluation of a FlowShop object
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*/
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class FlowShopEval : public moeoEvalFunc<FlowShop> {
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public:
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/**
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* constructor
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* @param _M the number of machines
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* @param _N the number of jobs to schedule
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* @param _p the processing times
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* @param _d the due dates
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*/
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FlowShopEval(const unsigned _M, const unsigned _N, const vector< vector<unsigned> > & _p, const vector<unsigned> & _d) :
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M(_M), N (_N), p(_p), d(_d){
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unsigned nObjs = 2;
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std::vector<bool> bObjs(nObjs, true);
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moeoObjectiveVectorTraits::setup(nObjs, bObjs);
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}
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/**
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* computation of the multi-objective evaluation of an eoFlowShop object
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* @param FlowShop & _eo the FlowShop object to evaluate
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*/
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void operator()(FlowShop & _eo) {
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FlowShopObjectiveVector objVector;
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objVector[0] = tardiness(_eo);
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objVector[1] = makespan(_eo);
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_eo.objectiveVector(objVector);
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}
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private:
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/** number of machines */
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unsigned M;
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/** number of jobs */
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unsigned N;
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/** p[i][j] = processing time of job j on machine i */
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std::vector< std::vector<unsigned> > p;
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/** d[j] = due-date of the job j */
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std::vector<unsigned> d;
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/**
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* computation of the makespan
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* @param FlowShop _eo the FlowShop object to evaluate
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*/
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double makespan(FlowShop _eo) {
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// the scheduling to evaluate
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vector<unsigned> scheduling = _eo.getScheduling();
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// completion times computation for each job on each machine
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// C[i][j] = completion of the jth job of the scheduling on the ith machine
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std::vector< std::vector<unsigned> > C = completionTime(_eo);
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// fitness == C[M-1][scheduling[N-1]];
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return C[M-1][scheduling[N-1]];
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}
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/**
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* computation of the tardiness
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* @param _eo the FlowShop object to evaluate
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*/
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double tardiness(FlowShop _eo) {
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// the scheduling to evaluate
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vector<unsigned> scheduling = _eo.getScheduling();
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// completion times computation for each job on each machine
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// C[i][j] = completion of the jth job of the scheduling on the ith machine
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std::vector< std::vector<unsigned> > C = completionTime(_eo);
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// tardiness computation
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unsigned long sum = 0;
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for (unsigned j=0 ; j<N ; j++)
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sum += (unsigned) std::max (0, (int) (C[M-1][scheduling[j]] - d[scheduling[j]]));
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// fitness == sum
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return sum;
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}
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/**
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* computation of the completion times of a scheduling (for each job on each machine)
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* C[i][j] = completion of the jth job of the scheduling on the ith machine
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* @param const FlowShop _eo the genotype to evaluate
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*/
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std::vector< std::vector<unsigned> > completionTime(FlowShop _eo) {
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vector<unsigned> scheduling = _eo.getScheduling();
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std::vector< std::vector<unsigned> > C(M,N);
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C[0][scheduling[0]] = p[0][scheduling[0]];
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for (unsigned j=1; j<N; j++)
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C[0][scheduling[j]] = C[0][scheduling[j-1]] + p[0][scheduling[j]];
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for (unsigned i=1; i<M; i++)
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C[i][scheduling[0]] = C[i-1][scheduling[0]] + p[i][scheduling[0]];
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for (unsigned i=1; i<M; i++)
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for (unsigned j=1; j<N; j++)
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C[i][scheduling[j]] = std::max(C[i][scheduling[j-1]], C[i-1][scheduling[j]]) + p[i][scheduling[j]];
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return C;
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}
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};
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#endif /*FLOWSHOPEVAL_H_*/
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