nature.population-operators — nature 1.0.0

Functions that span or operate against entire populations

advance-generation clj/s

(advance-generation population
                    population-size
                    binary-operator-set
                    unary-operator-set)

(advance-generation population
                    population-size
                    binary-operator-set
                    unary-operator-set
                    settings)

Apply the functions in binary-operator-set until a sufficiently large population is built. Then apply functions in unary-operator-set to the result. Optionally, include a map of settings to guide overall behavior. If the :carry-over setting is added, the elite member n of the prior generation will be advanced to the next generation.

keep-elite clj/s

(keep-elite population number-to-keep)

Find the top number-to-keep individuals in population, and increment their ages by 1

weighted-selection-of-population clj/s

(weighted-selection-of-population population total-retrieved)

(weighted-selection-of-population population total-retrieved replace?)

Pick total-retreived individuals from population with a relative probability of the individual's fitness score divided by the population's aggregate fitness score