Some more documentation
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1 changed files with 40 additions and 16 deletions
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@ -43,19 +43,18 @@
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#define M_PI 3.1415926535897932384626433832795
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#endif
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/** @ingroup EvolutionStrategies
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/** ES-style mutation in the large
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@brief ES-style mutation in the large
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@ingroup EvolutionStrategies
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Obviously, valid only for eoES*. It is currently valid for three types
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of ES chromosomes:
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- eoEsSimple: only 1 std deviation
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- eoEsStdev: as many standard deviations as object variables
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- eoEsSimple: Exactly one stdandard-deviation
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- eoEsStdev: As many standard deviations as object variables
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- eoEsFull: The whole guacemole: correlations, stdevs and object variables
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Each of these three variant has it's own operator() in eoEsMutate and
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intialization is also split into three cases (that share some
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commonalities)
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intialization is also split into three cases (that share some commonalities)
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*/
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template <class EOT>
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class eoEsMutate : public eoMonOp< EOT >
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@ -65,6 +64,7 @@ public:
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/** Fitness-type */
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typedef typename EOT::Fitness FitT;
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/** Initialization.
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@param _init Proxy class for initializating the three parameters
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@ -76,6 +76,7 @@ public:
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init(EOT(), _init); // initialize on actual type used
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}
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/** @brief Virtual Destructor */
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virtual ~eoEsMutate() {};
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@ -89,7 +90,10 @@ public:
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virtual std::string className() const {return "eoESMutate";};
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/** Mutate eoEsSimple */
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/** Mutate eoEsSimple
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@param _eo Individual to mutate.
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*/
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virtual bool operator()( eoEsSimple<FitT>& _eo)
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{
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_eo.stdev *= exp(TauLcl * rng.normal());
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@ -105,7 +109,9 @@ public:
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}
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/** Standard mutation in ESs
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/** Standard mutation in ES
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@overload
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Standard mutation of object variables and standard deviations in ESs.
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@ -115,7 +121,8 @@ public:
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@param _eo Individual to mutate.
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@see Schwefel 1977: Numerische Optimierung von Computer-Modellen mittels der
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@see
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Schwefel 1977: Numerische Optimierung von Computer-Modellen mittels der
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Evolutionsstrategie, pp. 165 ff.
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*/
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virtual bool operator()( eoEsStdev<FitT>& _eo )
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@ -135,17 +142,24 @@ public:
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}
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/** Correlated mutations in ESs
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/** Correlated mutations in ES
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Correlated mutations in ESs, according to the following sources:
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- H.-P. Schwefel: Internal Report of KFA Juelich, KFA-STE-IB-3/80, p. 43, 1980
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@overload
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Mutation of object variables, standard deviations, and their correlations in
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ESs.
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@param _eo Individual to mutate.
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@see
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- H.-P. Schwefel: Internal Report of KFA Juelich, KFA-STE-IB-3/80, p. 43, 1980.
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- G. Rudolph: Globale Optimierung mit parallelen Evolutionsstrategien,
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Diploma Thesis, University of Dortmund, 1990
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- Code from Thomas Baeck
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Diploma Thesis, University of Dortmund, 1990.
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*/
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virtual bool operator()( eoEsFull<FitT> & _eo )
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// Code originally from Thomas Bäck
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{
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// First: mutate standard deviations (as above).
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// First: mutate standard deviations (as for eoEsStdev<FitT>).
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double global = TauGlb * rng.normal();
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unsigned i;
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for (i = 0; i < _eo.size(); i++)
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@ -197,6 +211,7 @@ public:
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private :
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/** Initialization of simple ES */
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void init(eoEsSimple<FitT>, eoEsMutationInit& _init)
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{
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unsigned size = bounds.size();
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@ -205,6 +220,11 @@ public:
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std::cout << "Init<eoEsSimple>: tau local " << TauLcl << std::endl;
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}
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/** Initialization of standard ES
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@overload
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*/
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void init(eoEsStdev<FitT>, eoEsMutationInit& _init)
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{
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unsigned size = bounds.size();
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@ -216,6 +236,11 @@ public:
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std::cout << "Init<eoStDev>: tau local " << TauLcl << " et global " << TauGlb << std::endl;
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}
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/** Initialization of full ES
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@overload
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*/
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void init(eoEsFull<FitT>, eoEsMutationInit& _init)
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{
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init(eoEsStdev<FitT>(), _init);
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@ -259,4 +284,3 @@ template <class EOT>
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const double eoEsMutate<EOT>::stdev_eps = 1.0e-40;
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#endif
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