Rick：
Thanks for reply. I have a problem below. 4 Entities, 2 exclusive States, 2 measurements,
need find the max sum of cross-product. Know how to use Solver/EXCEL, new to
OPTMODEL. You can help on how to specify var/con/max/solve...?!
The SAS example, I read over but still somehow hard to code correctly.
| State | Entity1 | Entity2 | Entity3 | Entity4 |
| S1 | 9.9 | 6.1 | 1.4 | 7.1 |
| S2 | 5.9 | 5.9 | 3.0 | 0.1 |
| | | | | |
| | | | | |
| State | Entity1 | Entity2 | Entity3 | Entity4 |
| S1 | 5.7 | 9.8 | 1.1 | 5.3 |
| S2 | 1.3 | 7.8 | 8.5 | 9.5 |
| | | | | |
| CrossProduct | 56.3 | 60.4 | 1.5 | 37.6 |
| | 7.6 | 46.0 | 25.6 | 0.9 |
| | | | SUM(CP) | 236.0 |
