81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
/** -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
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The above line is usefulin Emacs-like editors
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*/
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/*
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Template for general operators
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===============================
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i.e. that takes any number of parents and generates any number of offspring
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a GenOp that creates less offspring than there are parents
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Second version, get parents using an external eoSelectOne
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*/
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#ifndef eoLessOffspringExternalSelectorGenOp_H
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#define eoLessOffspringExternalSelectorGenOp_H
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#include <eoGenOp.h>
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/**
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* Always write a comment in this format before class definition
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* if you want the class to be documented by Doxygen
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*
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* ATTENTION, class EOT *must* derive from EO, as method invalidate()
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* must be called if the genotypes of the indis is modified
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*/
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template<class EOT>
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class eoLessOffspringExternalSelectorGenOp: public eoGenOp<EOT>
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{
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public:
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/**
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* (Default) Constructor.
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*/
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eoLessOffspringExternalSelectorGenOp(eoSelectOne<EOT> & _sel, paramType _anyParameter) :
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sel(_sel), anyParameter(_anyParameter) {}
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/// The class name. Used to display statistics
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string className() const { return "eoLessOffspringExternalSelectorGenOp"; }
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/// The TOTAL number of offspring (here = nb of parents modified in place)
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unsigned max_production(void) { return NbLeftParents; }
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/**
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* eoShrinkGen operator - modifies some parents in the populator
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* using extra "parents" selected from an external selector
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*
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* @param _pop a POPULATOR (not a simple population)
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*/
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void apply(eoPopulator<EOT>& _plop)
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{
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// First, select as many parents as you will have offspring
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EOT& parent1 = *_plop; // select the first parent
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++_plop; // advance once for each selected parents
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...
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EOT& parentN = *_plop; // say you want N offspring
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// get extra parents - use private selector
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// _plop.source() is the eoPop<EOT> used by _plop to get parents
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// WARNING: you are not allowed to modify them (mandatory "const")
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const EOT& parentN+1 = sel(_plop.source());
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...
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const EOT& parentN+K = sel(_plop.source());
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// modify (in place) the "true" parents
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// (i.e. parent1, ..., parentsN)
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...
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// invalidate fitnesses of modified parents
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parent1.invalidate();
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...
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parentN.invalidate();
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}
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private:
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eoSelectOne<EOT> & sel;
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paramType anyParameter
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};
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#endif
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