ECE
041107

# 041107 - Lecture 1 Recall No Free Lunch theorems Two...

• Notes
• 501844684_ch
• 3
• 100% (2) 2 out of 2 people found this document helpful

This preview shows pages 1–2. Sign up to view the full content.

Lecture ??+1: 04/11/2007 Recall: No Free Lunch theorems. Two views (with warning that it’s not totally settled how they apply to evolutionary alogirthms.) Warning to exercise caution when applying these theorems. Bottom Line: the behavior of GAs, etc. behaves in a complicated way on the interplay between encoding, genetic operators, fitness function. Need to “make sense” together for the problem. Price’s Theorem: One theoretical attempt (promising but not “finished) at isolationg “make-sense” idea: Price’s Theorem from population genetics. Essentially if you have a “numerical observable” on a population (like fitness, etc.) if it exhibits high positive (or negative) correlation between the value on a set of parents and value on a set of offspring, then evolution will show a marked tendency to increase (decrease) value of observable as it proceeds. “correlation” in Price’s Theorem <==> interplay between encoding, fitness, genetic operators D’champs Idea : might try to design encodings to make the “Price correlation” large.

This preview has intentionally blurred sections. Sign up to view the full version.

This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern