Using the genetic algorithm

alexb

Dear topas community,

I have recently been attempting to apply the GA tutorial to a research problem, and am hoping anyone who's tried the same might be able to help me out.

My low-symmetry model has 54 modes (ie less than the 96 of WO3), and I have replaced the WO3 modes in the get_irrep_block_lists.py file, but when I run gacontrol.py the 'best modepool' includes modes numbered 55-96 (ie it can't be using the modes of my model). If I amend wo3modelsize = 96 #number of alelles per individual in gacontrol.py to a value of 54 then the modes in best modepool are numbered =<54 but the fitness/Rwp are sustantially worse than the fit of my parent model, so I have a gut feeling that gacontrol is still not using the 'right' modes. So my question is how to get gacontrol to do so. Are there other sections in the code that need updating to replace the tutorial data with my model? (I'm rather stumped in terms of understanding what the parameters under # mag specific information and # Apply problem-specific information are doing so it's entirely possible I've just missed something obvious!).

Thanks in advance,

Alex

johnsoevans

Alex: sorry, I've not had a chance to look at this and don't have the right python on this computer.

I thought you just needed to change the number of modes. As you say, your fit before the GA should be the same as your parent fit. I'd suggest looking at the INP file created by ga_control.py and running it directly to see if it looks correct.