Changeset 1243 for cpp/frams/genetics/genooperators.h

Timestamp:

05/19/23 19:12:22 (2 years ago)

Author:

Maciej Komosinski

Message:

Simplify modifiers 'r' and 'R' separately because they obey simpler rules than other modifiers and thus can be reduced more

File:

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

cpp/frams/genetics/genooperators.h

@@ -218 +218 @@
 
         static int getRandomChar(const char *choices, const char *excluded); ///<returns index of a random character from \a choices excluding \a excluded, or -1 when everything is excluded or \a choices is empty.
-        static string simplifiedModifiersFixedOrder(const char *str_of_char_pairs, vector<int> &char_counts); ///<returns a sequence of chars from \a str_of_char_pairs based on how many times each char occurred in \a char_counts. Assume that an even-index char and the following odd-index char have the opposite influence, so they cancel out. We don't use this function, because a fixed order imposed by this function means that the number of different parameter values produced by a sequence of modifiers is lowered (N same-letter upper- and lower-case chars yield only 2*N different values). Due to how modifiers work, the effect of aaA, aAa, Aaa etc. is different (N same-letter upper- and lower-case chars yield 2^N different values), so simplifying modifiers should not impose any order and should not interfere with their original order - see \a simplifiedModifiers().
+        static string simplifiedModifiers_rR(const string& str); ///<finds all 'r' and 'R' in \a str and returns the shortest sequence of 'r' and 'R that is equivalent to all these found in \a str.
+        static string simplifiedModifiersFixedOrder(const char *str_of_char_pairs, vector<int> &char_counts); ///<returns a sequence of chars from \a str_of_char_pairs based on how many times each char occurred in \a char_counts. Assume that an even-index char and the following odd-index char have the opposite influence, so they cancel out. We don't use this function, because a fixed order imposed by this function means that the number of different parameter values produced by a sequence of modifiers is lowered (N same-letter upper- and lower-case chars yield only 2*N different values). Due to how modifiers work, the effect of aaA, aAa, Aaa etc. is different (N same-letter upper- and lower-case chars yield 2^N different values), so simplifying modifiers should not impose any order, should not interfere with their original order, and should not cancel out antagonistic modifiers - see \a simplifiedModifiers() and geneprops_test.cpp.
         //@}
         static string simplifiedModifiers(const string &original); ///<from the \a original sequence removes modifiers that are too numerous (exceeding a defined threshold number), starting the removal from the leftmost (="oldest" when interpreting the sequence from left to right) ones.