{"id":311,"date":"2006-02-06T09:05:24","date_gmt":"2006-02-06T14:05:24","guid":{"rendered":"http:\/\/UnhinderedByTalent.com\/Phi\/?p=311"},"modified":"2006-02-06T09:06:56","modified_gmt":"2006-02-06T14:06:56","slug":"daaaagstuuuuuhl","status":"publish","type":"post","link":"https:\/\/UnhinderedByTalent.com\/Phi\/archives\/2006\/02\/06\/daaaagstuuuuuhl\/","title":{"rendered":"Daaaagstuuuuuhl!"},"content":{"rendered":"<p><a href=\"http:\/\/dagstuhl.de\/\"><img src='https:\/\/i0.wp.com\/UnhinderedByTalent.com\/Phi\/wp-content\/images\/DagstuhlFromTheAir.jpg?w=840&#038;ssl=1' alt='Dagstuhl from the air' align='right' hspace='10' vspace='10' data-recalc-dims=\"1\" \/><\/a><br \/>\nI&#8217;m happy ensconced once again at the <a href=\"http:\/\/dagstuhl.de\">Schloss Dagstuhl International Conference Research Center for Computer Science<\/a> in Germany for a week, and it&#8217;s swell.<\/p>\n<p><a href=\"http:\/\/dagstuhl.de\"><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/www.dagstuhl.de\/images\/head.png?w=840\" alt=\"Dagstuhl logo\" align='left' hspace='10' vspace='10' data-recalc-dims=\"1\" \/><\/a><br \/>\nThe short version is that Dagstuhl is a 1700&#8217;s manor house converted into a dedicated CSci research facility.  They run a series of weekly workshops on different topics year round.  Every two years they&#8217;ve had one in January or February on the <a href=\"http:\/\/www.dagstuhl.de\/06061\/\">Theory of Evolutionary Algorithms<\/a>, and I&#8217;ve had the pleasure of coming three times (including this visit).  It&#8217;s a small-ish group of about 50 cool people focusing pretty intensely on the subject, and it really stretches my head in cool (if sometimes painful) ways.<\/p>\n<p>I could talk a lot, but I should be doing research, so I&#8217;ll leave you to <a href=\"http:\/\/www.dagstuhl.de\/About\/Photographs\/index.en.html\">look at the pictures<\/a> and <a href=\"http:\/\/www.dagstuhl.de\/About\/index.en.html#History\">read the history<\/a>.  (Getting ready to come here in the midst of classes and admin duties is largely the reason for not much blogging recently, and it&#8217;s likely to remain quiet as a result.)<\/p>\n<p>This morning&#8217;s round were on co-evolution and had some very nice material.<\/p>\n<ul>\n<li>Ken De Jong gave a nice talk on work by his student Popovici  that, among other things, showed how you could use <a href=\"http:\/\/en.wikipedia.org\/wiki\/Best_response\">best-reponse curves<\/a> to understand the dynamics of co-evolutionary systems with some nice results on unstable and even chaotic dynamics.<\/li>\n<li>Edwin De Jong (no relation) talked about his work on underlying objectives in multi-objective optimization, which was very cool since one of his papers had been the primary focus of one of my Senior Seminar students (Jon Q) last semester.  Jon and I had really enjoyed that paper and I&#8217;d gotten a lot of ideas from it, so I&#8217;m looking forward to talking further with Edwin about his work.<\/li>\n<li>Paul Weigand suggested that one of the things that co-evolutionary systems &#8220;did&#8221; (or were &#8220;good at&#8221;) was to evolve <em>robust<\/em> solutions as much as evolve (close to) optimal solutions.  While there are lots of issues (which Paul raised and acknowledges) about what &#8220;robust&#8221; exactly means and how all this depends on problems and representations, the basic idea seems to make some intuitive sense.  Any process that has to act in a noisy or stochastic environment needs to be robust to a degree against that noise, which makes it seem plausible that (given the correct representation and operators) evolution would be fairly good at generating solutions that are robust to other forms of change.<\/li>\n<\/ul>\n<p>Soon it&#8217;s tea and cake, and then we&#8217;re back in for the afternoon session!  Huzzah!<br \/>\n<img src='https:\/\/i0.wp.com\/UnhinderedByTalent.com\/Phi\/wp-content\/images\/DagstuhlInShowSmall.jpg?w=400&#038;ssl=1' alt='Dagstuhl in the snow' data-recalc-dims=\"1\" \/><\/p>\n\n\t<div class=\"st-post-tags \">\n\tTags: <a href=\"https:\/\/UnhinderedByTalent.com\/Phi\/archives\/tag\/photography\/\" title=\"Photography\">Photography<\/a><br \/><\/div>\n\n\n\t<h4>Related posts<\/h4>\n\t<ul class=\"st-related-posts\">\n\t<li><a href=\"https:\/\/UnhinderedByTalent.com\/Phi\/archives\/2007\/11\/18\/wonderful-little-film-about-paul-rand\/\" title=\"Wonderful little film about Paul Rand (18 Nov 07)\">Wonderful little film about Paul Rand<\/a> (0)<\/li>\n\t<li><a href=\"https:\/\/UnhinderedByTalent.com\/Phi\/archives\/2007\/11\/20\/with-joy-shall-ye-draw-water\/\" title=\"With joy shall ye draw water (20 Nov 07)\">With joy shall ye draw water<\/a> (0)<\/li>\n<\/ul>\n\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;m happy ensconced once again at the Schloss Dagstuhl International Conference Research Center for Computer Science in Germany for a week, and it&#8217;s swell. The short version is that Dagstuhl is a 1700&#8217;s manor house converted into a dedicated CSci research facility. They run a series of weekly workshops on different topics year round. Every &hellip; <a href=\"https:\/\/UnhinderedByTalent.com\/Phi\/archives\/2006\/02\/06\/daaaagstuuuuuhl\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Daaaagstuuuuuhl!&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_newsletter_tier_id":0},"categories":[4,12,19],"tags":[869],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p90sy-51","jetpack_sharing_enabled":true,"jetpack_likes_enabled":false,"jetpack-related-posts":[{"id":789,"url":"https:\/\/UnhinderedByTalent.com\/Phi\/archives\/2008\/02\/03\/done-dumping-dagstuhl-photos\/","url_meta":{"origin":311,"position":0},"title":"Done dumping Dagstuhl photos","author":"Nic McPhee","date":"3 Feb 08","format":false,"excerpt":"Almost had an alliteration in the title, but then lost it at the end. Sigh. I've finishing dumping all my Dagstuhl photos (uncleaned and unedited) to my event account on Flickr, so those with more time than sense can rush over and gaze upon them all. Over the next week\u2026","rel":"","context":"In &quot;Computing&quot;","block_context":{"text":"Computing","link":"https:\/\/UnhinderedByTalent.com\/Phi\/archives\/category\/computing\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":838,"url":"https:\/\/UnhinderedByTalent.com\/Phi\/archives\/2008\/05\/15\/far-too-many-photos-from-dagstuhl\/","url_meta":{"origin":311,"position":1},"title":"Far too many photos from Dagstuhl","author":"Nic McPhee","date":"15 May 08","format":false,"excerpt":"Regular readers here will likely remember various past posts extolling the virtues of Dagstuhl, this really wonderful computing research facility in Germany. I've been lucky enough to attend several seminars on the Theory of Evolutionary Algorithms in the past, and have taken (and posted) quite a few photos from those\u2026","rel":"","context":"In &quot;Computing&quot;","block_context":{"text":"Computing","link":"https:\/\/UnhinderedByTalent.com\/Phi\/archives\/category\/computing\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1152,"url":"https:\/\/UnhinderedByTalent.com\/Phi\/archives\/2010\/01\/15\/a-neat-use-of-some-of-my-photos\/","url_meta":{"origin":311,"position":2},"title":"A neat use of some of my photos","author":"Nic McPhee","date":"15 Jan 10","format":false,"excerpt":"When I came back from the holidays I had a very pleasant surprise waiting for me in my office mailbox: A 2010 calendar from Schloss Dagstuhl. Each month has a small day grid at the top, and one or two photos of Dagstuhl below; the photos for each month are\u2026","rel":"","context":"In &quot;Computing&quot;","block_context":{"text":"Computing","link":"https:\/\/UnhinderedByTalent.com\/Phi\/archives\/category\/computing\/"},"img":{"alt_text":"So different from in the winter","src":"https:\/\/i0.wp.com\/farm4.static.flickr.com\/3200\/2517998139_d939b4158c.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":785,"url":"https:\/\/UnhinderedByTalent.com\/Phi\/archives\/2008\/01\/29\/doing-science-isnt-always-easy-and-sometimes-you-need-a-beer\/","url_meta":{"origin":311,"position":3},"title":"Doing science isn&#8217;t always easy (and sometimes you need a beer)","author":"Nic McPhee","date":"29 Jan 08","format":false,"excerpt":"This is from the morning break here on our first full day at Dagstuhl. I love the look on his face. Dagstuhl isn't all heavy thinking and hard work, though. I had a beer with dinner (pictured below); unfortunately it made me very sleepy for a while. I'm such a\u2026","rel":"","context":"In &quot;Computing&quot;","block_context":{"text":"Computing","link":"https:\/\/UnhinderedByTalent.com\/Phi\/archives\/category\/computing\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":781,"url":"https:\/\/UnhinderedByTalent.com\/Phi\/archives\/2008\/01\/25\/wrapping-ones-head-around-the-data\/","url_meta":{"origin":311,"position":4},"title":"Wrapping one&#8217;s head around the data","author":"Nic McPhee","date":"25 Jan 08","format":false,"excerpt":"JOCP! It's been almost five days since I've posted anything here, and I have so much backed up in the queue... There's a major conference deadline (GECCO 2008) in a few days, and I'm struggling to finish up four different (and only loosely related) papers for submission. On top of\u2026","rel":"","context":"In &quot;Computing&quot;","block_context":{"text":"Computing","link":"https:\/\/UnhinderedByTalent.com\/Phi\/archives\/category\/computing\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":787,"url":"https:\/\/UnhinderedByTalent.com\/Phi\/archives\/2008\/01\/31\/and-tomorrow-i-head-home\/","url_meta":{"origin":311,"position":5},"title":"And tomorrow I head home","author":"Nic McPhee","date":"31 Jan 08","format":false,"excerpt":"All good things must come to an end, and our week at Dagstuhl ends tomorrow after lunch. Above is yesterday's group picture (I'm in yellow near the front) just before the traditional Wednesday hike (below), which was wet and misty but still an enjoyable few hours out in the world.\u2026","rel":"","context":"In &quot;Computing&quot;","block_context":{"text":"Computing","link":"https:\/\/UnhinderedByTalent.com\/Phi\/archives\/category\/computing\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/UnhinderedByTalent.com\/Phi\/wp-json\/wp\/v2\/posts\/311"}],"collection":[{"href":"https:\/\/UnhinderedByTalent.com\/Phi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/UnhinderedByTalent.com\/Phi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/UnhinderedByTalent.com\/Phi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/UnhinderedByTalent.com\/Phi\/wp-json\/wp\/v2\/comments?post=311"}],"version-history":[{"count":0,"href":"https:\/\/UnhinderedByTalent.com\/Phi\/wp-json\/wp\/v2\/posts\/311\/revisions"}],"wp:attachment":[{"href":"https:\/\/UnhinderedByTalent.com\/Phi\/wp-json\/wp\/v2\/media?parent=311"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/UnhinderedByTalent.com\/Phi\/wp-json\/wp\/v2\/categories?post=311"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/UnhinderedByTalent.com\/Phi\/wp-json\/wp\/v2\/tags?post=311"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}