108 lines
2.6 KiB
C++
108 lines
2.6 KiB
C++
// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
|
|
|
|
// "FlowShopOpMutationShift.h"
|
|
|
|
// (c) OPAC Team, LIFL, March 2006
|
|
|
|
/* This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2 of the License, or (at your option) any later version.
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with this library; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
Contact: Arnaud.Liefooghe@lifl.fr
|
|
*/
|
|
|
|
#ifndef _FlowShopOpMutationShift_h
|
|
#define _FlowShopOpMutationShift_h
|
|
|
|
#include <eoOp.h>
|
|
|
|
|
|
/**
|
|
* Functor
|
|
* Shift mutation operator for flow-shop
|
|
*/
|
|
class FlowShopOpMutationShift:public eoMonOp < FlowShop >
|
|
{
|
|
|
|
public:
|
|
|
|
/**
|
|
* default constructor
|
|
*/
|
|
FlowShopOpMutationShift ()
|
|
{
|
|
}
|
|
|
|
/**
|
|
* the class name (used to display statistics)
|
|
*/
|
|
string className () const
|
|
{
|
|
return "FlowShopOpMutationShift";
|
|
}
|
|
|
|
/**
|
|
* modifies the parent with a shift mutation
|
|
* @param FlowShop & _genotype the parent genotype (will be modified)
|
|
*/
|
|
bool operator () (FlowShop & _genotype)
|
|
{
|
|
bool isModified;
|
|
int direction;
|
|
unsigned tmp;
|
|
|
|
// schedulings
|
|
vector < unsigned >initScheduling = _genotype.getScheduling ();
|
|
vector < unsigned >resultScheduling = initScheduling;
|
|
|
|
// computation of the 2 random points
|
|
unsigned point1, point2;
|
|
do
|
|
{
|
|
point1 = rng.random (resultScheduling.size ());
|
|
point2 = rng.random (resultScheduling.size ());
|
|
}
|
|
while (point1 == point2);
|
|
|
|
// direction
|
|
if (point1 < point2)
|
|
direction = 1;
|
|
else
|
|
direction = -1;
|
|
// mutation
|
|
tmp = resultScheduling[point1];
|
|
for (unsigned i = point1; i != point2; i += direction)
|
|
resultScheduling[i] = resultScheduling[i + direction];
|
|
resultScheduling[point2] = tmp;
|
|
|
|
// update (if necessary)
|
|
if (resultScheduling != initScheduling)
|
|
{
|
|
// update
|
|
_genotype.setScheduling (resultScheduling);
|
|
// the genotype has been modified
|
|
isModified = true;
|
|
}
|
|
else
|
|
{
|
|
// the genotype has not been modified
|
|
isModified = false;
|
|
}
|
|
|
|
// return 'true' if the genotype has been modified
|
|
return isModified;
|
|
}
|
|
|
|
};
|
|
|
|
#endif
|