Preference-based optimization

Hi Robert,

I notice an very interesting function of Octopus that considers the users' preferences. This is useful in architectural form optimization problem. I'm now into the study with regard to the integration of preference into optimization algorithm. Could you give me any information about your approach in Octopus? I think your help will be important in my future study. Maybe I could use OctopusE to implement my approach if I have some advances. 

Looking forward to your response. Thanks a lot.

Best regards,

Dan