Changeset 752 for cpp/frams/genetics/fn/oper_fn.cpp

Timestamp:

02/28/18 23:43:57 (6 years ago)

Author:

Maciej Komosinski

Message:

Mutation in the 'fn' encoding respects custom min,max,stddev for each variable

File:

• cpp/frams/genetics/fn/oper_fn.cpp (modified) (2 diffs)

cpp/frams/genetics/fn/oper_fn.cpp

@@ -11 +11 @@
 static ParamEntry GENOfnparam_tab[] =
 {
-        { "Genetics: fn", 1, 1, },
-        { "fn_xover", 0, 0, "Inherited in linear mix crossover", "f 0.5 1.0 0.5", FIELD(xover_proportion), "0.5 => children are averaged parents.\n0.8 => children are only 20% different from parents.\n1.0 => each child is identical to one parent (no crossover).", },
+        { "Genetics: fn", 1, 4, },
+        { "fn_xover", 0, 0, "Inherited in linear mix crossover", "f 0.5 1.0 0.9", FIELD(xover_proportion), "0.5 => children are averaged parents.\n0.8 => children are only 20% different from parents.\n1.0 => each child is identical to one parent (no crossover).", },
+        { "fn_mut_bound_low", 1, 0, "Lower bounds for mutation", "s 0 0 [-1.0]", FIELD(mut_bound_low), "A vector of lower bounds (one real value for each variable)", },
+        { "fn_mut_bound_high", 1, 0, "Higher bounds for mutation", "s 0 0 [1.0]", FIELD(mut_bound_high), "A vector of higher bounds (one real value for each variable)", },
+        { "fn_mut_stddev", 1, 0, "Standard deviations for mutation", "s 0 0 [0.1]", FIELD(mut_stddev), "A vector of standard deviations (one real value for each variable)", },
         { 0, },
 };
@@ -51 +54 @@
         if (values.size() == 0)
                 return GENOPER_OPFAIL;
+        vector<double> bound_low = GenoConv_fn0::stringToVector(mut_bound_low.c_str());
+        vector<double> bound_high = GenoConv_fn0::stringToVector(mut_bound_high.c_str());
+        vector<double> stddev = GenoConv_fn0::stringToVector(mut_stddev.c_str());
+        if (bound_low.size() != bound_high.size() || bound_high.size() != stddev.size() || stddev.size() != values.size())
+        {
+                logPrintf("GenoOper_fn", "mutate", LOG_ERROR, "The solution vector, bound vectors, and standard deviation vectors must all have the same number of values");
+                return GENOPER_OPFAIL;
+        }
+
         int which = randomN(values.size());
-        values[which] = GenoOperators::mutateCreep('f', values[which], -100, 100); //TODO precision 0.001 is forced!
+        values[which] = GenoOperators::mutateCreep('f', values[which], bound_low[which], bound_high[which], stddev[which], false);
         string saved = GenoConv_fn0::vectorToString(values);
         free(gene);