Function finding

This process recursively generates new attributes by mathematically combining existing attributes with user selectable operators. At the end of each pass through the recursion attributes are thinned to prevent silicon smoke and unpleasantness.

Sample input.

P1    P2    A1    A2    RESULT
2       3      4      5      15
6       7      8      9      59
10    11    12    13    135
14    15    16    17    243
18    19    20    21    383

Sample output column headings

((P2 + A2) + (P1*P2))