{"id":290,"date":"2013-08-17T08:08:27","date_gmt":"2013-08-17T12:08:27","guid":{"rendered":"http:\/\/sites.hampshire.edu\/ci-lab\/?p=290"},"modified":"2013-08-17T08:11:35","modified_gmt":"2013-08-17T12:11:35","slug":"14-august-2013","status":"publish","type":"post","link":"https:\/\/sites.hampshire.edu\/ci-lab\/2013\/08\/17\/14-august-2013\/","title":{"rendered":"14 August 2013"},"content":{"rendered":"<h1>14 August 2013<\/h1>\n<h2>Present<\/h2>\n<p>Lee, Tom, Kyle, Jake, Dave (scribe) , Dan<\/p>\n<h2>Brevis<\/h2>\n<p>Some progress in Brevis. Moving along, but some trouble with scroll bars. A little faster, but looks about the same.<\/p>\n<h2>ULTRA speedup<\/h2>\n<p>Lee noticed that it was stalling for a long time during genetic operators. Lots of lists used. Tom pushed an updated version that&#8217;s about 2X as fast.<\/p>\n<h2>Lexicase Elite Group Selection<\/h2>\n<ul>\n<li>IF any two cases have same elites, they are part of the same elite group.<\/li>\n<li>Didn&#8217;t really work better, but pushed to master.<\/li>\n<li>Tried removing any groups that pick out a subset of another elite group.<\/li>\n<li>Sometimes getting 0 elite groups- might be a bug (fixed after meeting)<\/li>\n<\/ul>\n<h2>Website<\/h2>\n<p>By Daniel Now at\u00a0<a href=\"http:\/\/sites.hampshire.edu\/ci-lab\/\" rel=\"nofollow\">http:\/\/sites.hampshire.edu\/ci-lab\/<\/a>\u00a0Wordpress page &#8211; possible to edit, rewind, etc. To replace wiki<\/p>\n<h2>Mult. Weight Updates Paper<\/h2>\n<ul>\n<li>they made a lot of assumptions (infinite pop, random mating, etc.)<\/li>\n<li>in finite pop you lose and gain haplotypes over time- not a good assumption<\/li>\n<li>No geography<\/li>\n<li>Mixability is interesting idea, though &#8211; the evolve solutions robust to\u00a0evolutionary operators<\/li>\n<li>What is the relationship between GP and MWU?<\/li>\n<li>What about ULTRA without mutation? without crossover?<\/li>\n<li>Can we try payoff matrix? (Kyle already tried something similar)<\/li>\n<\/ul>\n<h2>Parity<\/h2>\n<p>Les Valiant&#8217;s problem &#8211; 100 variables, 50 are relevant &#8211; are sum of bits for 50 even or odd? (Original 1000, 500) Big Question: Are you allowed to choose the test cases? May be trivial if you are allowed to choose, but paper does not specify selection method<\/p>\n<h2>Calculator<\/h2>\n<p>(Calc problem: A fitness case is a sequence of button presses, output is what is displayed on screen: number or error). Each button tags some code. Tried lexicase selection and improvements some ideas:<\/p>\n<ul>\n<li>more tagging instructions<\/li>\n<li>don&#8217;t re-tag: later tag changes become a no-op<\/li>\n<li>binary branching for bushier trees<\/li>\n<li>re-think tests cases (separate error-flag from numerical; char based, not\u00a0numerical error)<\/li>\n<li>Binary fitness?? (Wrong or right in each case &#8212; is it too little\u00a0information)<\/li>\n<\/ul>\n<p>Anyone who has any ideas is welcome to try them<\/p>\n<h2>Next meeting: 8\/26 or 8\/27 (28-30 not viable)<\/h2>\n<h2>To do:<\/h2>\n<p>Read Dave&#8217;s Paper Brevis demo (Daniel): Bring site up to date and make it the new site redirect from Hampedia (Kyle): Ask Valiant if we understand description correctly<\/p>\n","protected":false},"excerpt":{"rendered":"<p>14 August 2013 Present Lee, Tom, Kyle, Jake, Dave (scribe) , Dan Brevis Some progress in Brevis. Moving along, but some trouble with scroll bars. A little faster, but looks about the same. ULTRA speedup Lee noticed that it was stalling for a long time during genetic operators. Lots of lists used. Tom pushed an [&hellip;]<\/p>\n","protected":false},"author":622,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-290","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/sites.hampshire.edu\/ci-lab\/wp-json\/wp\/v2\/posts\/290"}],"collection":[{"href":"https:\/\/sites.hampshire.edu\/ci-lab\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.hampshire.edu\/ci-lab\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.hampshire.edu\/ci-lab\/wp-json\/wp\/v2\/users\/622"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.hampshire.edu\/ci-lab\/wp-json\/wp\/v2\/comments?post=290"}],"version-history":[{"count":2,"href":"https:\/\/sites.hampshire.edu\/ci-lab\/wp-json\/wp\/v2\/posts\/290\/revisions"}],"predecessor-version":[{"id":293,"href":"https:\/\/sites.hampshire.edu\/ci-lab\/wp-json\/wp\/v2\/posts\/290\/revisions\/293"}],"wp:attachment":[{"href":"https:\/\/sites.hampshire.edu\/ci-lab\/wp-json\/wp\/v2\/media?parent=290"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.hampshire.edu\/ci-lab\/wp-json\/wp\/v2\/categories?post=290"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.hampshire.edu\/ci-lab\/wp-json\/wp\/v2\/tags?post=290"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}