Changeset 751 for cpp/frams/genetics/oper_fx.h

Timestamp:

02/28/18 23:41:58 (7 years ago)

Author:

Maciej Komosinski

Message:

More versatile mutation function for numbers

File:

• cpp/frams/genetics/oper_fx.h (modified) (1 diff)

cpp/frams/genetics/oper_fx.h

@@ -187 +187 @@
         static bool mutateProperty(ParamInterface &p, int propindex); ///<like mutatePropertyNaive(), but uses special probability distributions for some neuron properties.
         static bool getMutatedProperty(ParamInterface &p, int i, double oldval, double &newval); ///<like mutateProperty(), but just returns \e newval, does not get nor set it using \e p.
-        static double mutateCreepNoLimit(char type, double current, double mn, double mx); ///<returns \e current value creep-mutated with Gaussian distribution within [ \e mn , \e mx ] interval. Forced precision: 3 digits after comma. \e type must be either 'd' (integer) or 'f' (float/double).
-        static double mutateCreep(char type, double current, double mn, double mx); ///<just as mutateCreepNoLimit(), but forces mutated value into the [mn,mx] range using the 'reflect' approach.
+        static double mutateCreepNoLimit(char type, double current, double stddev, bool limit_precision_3digits); ///<returns \e current value creep-mutated with Gaussian distribution and \e stddev standard deviation. Precision limited to 3 digits after comma when \e limit_precision_3digits is true. \e type must be either 'd' (integer) or 'f' (float/double).
+        static double mutateCreep(char type, double current, double mn, double mx, double stddev, bool limit_precision_3digits); ///<just as mutateCreepNoLimit(), but forces mutated value into the [mn,mx] range using the 'reflect' approach.
+        static double mutateCreep(char type, double current, double mn, double mx, bool limit_precision_3digits); ///<just as mutateCreepNoLimit(), but forces mutated value into the [\e mn,\e mx] range using the 'reflect' approach and assumes standard deviation to be a fraction of the mx-mn interval width.
         static void setIntFromDoubleWithProbabilisticDithering(ParamInterface &p, int index, double value); ///<sets a double value in an integer field; when a value is non-integer, applies random "dithering" so that both lower and higher integer value have some chance to be set.
         static void linearMix(vector<double> &p1, vector<double> &p2, double proportion); ///<mixes two real-valued vectors; inherited proportion should be within [0,1]; 1.0 does not change values (all inherited), 0.5 causes both vectors to become their average, 0.0 swaps values (none inherited).