**Number of Generations**- The parameter is a positive integer value to determine the number of generations the algorithm shall evolve the population. The default is '200'.

**Population Size**- The parameter is a positive integer value to determine the size of the population, i.e., the number of individuals that survive after each generation. The default is '20'. Random Number Generator The parameter is an enumeration value to determine which random number generator this method shall use. COPASI provides two random number generators R250 [Maier91] (selected through the value 0) and the Mersenne Twister [Matsumoto98] (selected through the value 1 (default)).

**Seed**- The parameter is a positive integer value to determine the seed for the random number generator. A value of zero instructs COPASI to select a "random" value.