Changeset 959

Timestamp:

06/26/20 01:30:10 (4 years ago)

Author:

Maciej Komosinski

Message:

Added a high-level neuron mutation function

Location:

cpp/frams/genetics

Files:

• genooperators.cpp (modified) (1 diff)
• genooperators.h (modified) (1 diff)

cpp/frams/genetics/genooperators.cpp

@@ -74 +74 @@
         }
         return defined == 3;
+}
+
+bool GenoOperators::mutateRandomNeuronOrNeuroclassProperty(Neuro* n)
+{
+        bool mutated = false;
+        int prop = selectRandomNeuronProperty(n);
+        if (prop >= 0)
+        {
+                if (prop >= GenoOperators::NEUROCLASS_PROP_OFFSET)
+                {
+                        SyntParam par = n->classProperties();   //commits changes when p is destroyed
+                        mutated = mutateProperty(par, prop - GenoOperators::NEUROCLASS_PROP_OFFSET);
+                }
+                else
+                {
+                        Param par = n->extraProperties();
+                        mutated = mutateProperty(par, prop);
+                }
+        }
+        return mutated;
 }
 

cpp/frams/genetics/genooperators.h

@@ -185 +185 @@
         static int roulette(const double *probtab, const int count);    ///<returns random index according to probabilities in the \e probtab table or -1 if all probs are zero. \e count is the number of elements in \e probtab.
         static bool getMinMaxDef(ParamInterface *p, int propindex, double &mn, double &mx, double &def); ///<perhaps a more useful (higher-level) way to obtain min/max/def info for integer and double properties. Returns true if min/max/def was really available (otherwise it is just invented).
+        static bool mutateRandomNeuronOrNeuroclassProperty(Neuro* n); ///<high-level neuron mutation function, will select and mutate a random property of a neuron or its neuroclass. Returns true if successful and some property was actually mutated. Could return false when the neuron and its neuroclass have no properties, or when a randomly selected property was not suitable for mutation (for example a string or another non-number type).
         static int selectRandomNeuronProperty(Neuro* n); ///<selects random property (either 0-based extraproperty of Neuro or NEUROCLASS_PROP_OFFSET-based property of its NeuroClass). -1 if Neuro has no properties.
         static double mutateNeuronProperty(double current, Neuro *n, int propindex); ///<returns value \e current mutated for the property \e propindex of NeuroClass \e nc or for extraproperty (\e propindex - NEUROCLASS_PROP_OFFSET) of Neuro. Neuro is used as read-only. Give \e propindex == -1 to mutate connection weight (\e nc is then ignored).