I recently read a cool paper from GECCO 2012 called “Spatial Co-Evolution: Quicker, Fitter and Less Bloated”  by Robin Harper. This paper explores some benefits of the Spatial Co-evolution in Age-Layered Planes (SCALP) algorithm, originally described by Harper in a previous paper (paywall) . In SCALP, the population lives in a three-dimensional grid of cells. Each cell is inhabited by both a solver (the “host”) and a test case (the “parasite”). Solvers try to find the right answer for each test case that is either next to or below them. They gain fitness by more closely approximating the desired answer. Test cases, on the other hand, gain fitness by being hard to get right – fitter test cases are those for which solvers have higher error. That explains the “spatial co-evolution” part of the algorithm, but what about the age-layered planes? […]
As many of us are starting the winter semester, it seemed an opportune time to discuss surviving not just the winter weather (here’s hoping Michigan’s winter isn’t as bad as last year!), but the rather mentally and emotionally trying process that is graduate school. I’m currently in my third year at MSU and am just finishing up classes, so these tips are only guaranteed to be even partially relevant for your first few years, but hopefully they continue to help me and you in our final years as well!
Happy Holidays! We hope that you’re taking at least a bit of a break from pipetting and typing sometime last week or this week. In the mean time, here’s a pretty graph to add to the flashing lights: Cheers! -Anya
Missed the beginning? Parts 1, 2, 3, 4, 5, and 6. Part 7 Scrooge awoke with a start. He was in his own bed. And seemingly alive! What a relief! He bounced out of bed and ran to his window. Looking down, he saw a student walking by on the street outside and called down to her “You there! What day is it?” “It’s Christmas day, sir!” the student called back, looking a bit perplexed.
Missed the beginning? Parts 1, 2, 3, 4, and 5. Part 6 A final chime sounded. Steam poured from the radiator, swirling through the air until it congealed into a dark hooded figure: The Spirit of Christmas Future. As Scrooge stared at the figure in trepidation, it silently raised a robed arm and gestured forward. Scrooge followed its direction, and found himself in the faculty lounge of his department. A group of professors were chatting.