Figure 8. AEP encoding scheme-Selecting Operations for Assembler Encoding

Each population delegates exactly one representative to each AEP.
In the beginning, AEPs have only one operation and a sequence of data. Both the operation
and data come from two different populations. Further populations including operations are
successively added if AEPs cannot accomplish progress in performance over the assumed
number of co-evolutionary cycles (we use term “co-evolutionary cycle” to differ it from the
evolutionary generation that takes place inside a single population with operations and data).