3 May 2013

Present: Lee, Tom (scribe), Daniel, Kwaku (hangouts)

Reading for next meeting: Bill Langdon paper (emailed to list)

People Associated with Lab This Summer

 * Lee
 * Tom
 * Daniel
 * Kwaku (remotely)
 * Jake?
 * Bill
 * Kyle
 * Ryan and David (new UMass grad students)
 * Pratistha (Smith)
 * Zeke (GitHub things)

Things for Lee to take note of

 * Link to Zeke's stuff on wiki
 * When to have next lab meeting
 * Get GPTP slides to Tom soon, preferably by early in the day Monday
 * Send Tom calc code to do lexicase case usage visualization

GPTP

 * Lee makes slides
 * Tag-team presentation
 * Tom describes experiments and results
 * Lee does everything else

Selection
Lee's new selection: Maximal Polymath selection
 * Uses elite cohorts
 * Hopes to combat some of lexicase's problems with number of test cases vs. population size problems.
 * Pick random cohort, and then use random individual from that cohort, or use lexicase within that cohort
 * Possible issues:
 * Too much elitism?
 * Too much emphasis on weak individuals that do well on single test cases that others do poorly on?

Kwaku visualization stuff
Sounds interesting - Kwaku will get it working and send new link

Upcoming Topics

 * ULTRA
 * Synthetic parent trials
 * No-paren ULTRA / push
 * Tree GP ULTRA
 * Brevis
 * Tags
 * Environments
 * Keep Cool
 * Visualization (Push stack diagrams)