Archive for the 'Computing' Category

So much to do - so little time

Posted in General, Research, Science on May 3rd, 2008

Sorry for the lack of activity here - an EPSRC grant with Riccardo came through, which is big happy news. The downside is that there’s a ton of research work to be done in a very short period of time. We were lucky enough to have Ellery Crane visiting for the last two weeks, and the two of us did some pretty massive hours while he was here. We got a bucket of really good work done was he here; we built several large new systems and got some early results that suggest probably at least a couple of papers.

I’ll try to post at least sporadically in the upcoming weeks, but I suspect things are likely to be light here well into the summer.

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Education’s an investment, not an expense!

Posted in Education, Podcasts, Politics, Research, Science on April 1st, 2008

Wrapping one's head around the data
Just did a pile o’ dishes and listened to a SciAm podcast featuring the remarks of Robert Rosner (head of Argonne National Laboratory). The short version is that science (and, I would argue, education in general) is a matter of necessity plus vision. First, science is not a luxury, but instead a necessity:

Without the science base, you cannot build an industrial base.

Second, science requires long term vision and public and private support in in basic research. It typically takes decades for culture changing technologies to move from the basic idea to ubiquity; Rosen gives as examples railroads, airplanes, transistors, computers, the internet, and lasers. The question then is

How do you convince the politics and the public that that lag in fact is real and that if you don’t make the investments … today … we’ll be lagging things that other folks that are making the investments

Rosen is (quite reasonably) focussed specifically on the question of support for science, but points out that this is part of a larger trend of irrationality in the U.S.:

But we all know that in the United States there are long traditions of anti-intellectualism, of what the Times today also refer to as anti-rationalism, the idea that there really are no facts, it’s all opinion, the idea that scientists [are] just playing their sand box and don’t connect with anybody.

What it really comes down to is a distressingly common failure for Americans to see any form of education (science or humanities, K12 or university) as a necessary investment in the strength and future of our society and country. For me this has become a useful litmus test to separate sensible conservatives (who understand the economic necessity of investment in key areas) from the wingnuts that have come to dominate the Republican party (who spout anti-intellectual nonsense while shredding schools and lining the pockets of themselves and their friends).

Eisenhower understood the practical necessity of an interstate road system, and encouraged and supported that investment. All Shrub can seem to invest in is Halliburton and their ilk.

Things to think (and ask) about in this happy election season.

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A little wind-swept

Posted in Computing, Events, Photography, Research, Sabbatical, Travels on April 1st, 2008

A little windswept

On Friday after the EvoStar/EuroGP events wrapped up, Bill (Langdon), Riccardo (Poli), Tyler (Hutchison), and I spent a couple of hours being tourists in Naples, starting at Castel dell’Ovo ("Egg Castle"). This castle sits on a little island just off the shore right in front of our hotel and the conference center, so we saw it the whole time we were there. Most of our time there was gray, and often wet, but happily Friday afternoon turned clear and blue (if blustery). So we walked over to the castle and wandered about chatting and admiring the many views.

Here we have Tyler and Bill being blown about a bit, with Vesuvius dimly visible across the bay in the background. I love what the wind’s done to Tyler’s hair and Bill’s clothes :-).

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UMM students are just so cool!

Posted in Computing, Education, Events, My writing, Research, Sabbatical, Science, Writing on March 30th, 2008

EuroGP 2008 - 495
As mentioned earlier, our paper “Semantic building blocks in genetic programming” with Brian Ohs (UMM ‘08) and Tyler Hutchison (UMM ‘07) was nominated for Best Paper at EuroGP 2008 in Naples, Italy.

We won!

That a paper co-authored with two undergraduates from a small, public, undergraduate liberal arts institution like the University of Minnesota, Morris, could win an award like this at an international science conference is just too damn cool. Well done to both Brian and Tyler!

In the hectic melee of the conference, most folks don’t have time to do anything more than skim the nominated papers, and usually not even that. This makes the talks a crucial part of an award like this, as much of the voting is based on them. Tyler (pictured above at Castel dell’Ovo in Naples) was a huge help in that regard. He flew over to the UK several days early so we could work on our talk, giving us the time we needed to revise and practice. He also produced a super cool little six page comic with a nifty introduction to our work that the audience could follow along with. We did a joint presentation, each covering about half the paper. Our talk was well received, and Tyler’s comic was incredibly (and deservedly) popular, and there’s no doubt that his participation was a huge help.

(And all this is on top of Brian and Tyler’s hard work and contributions on the paper itself. Obviously without that content we never would have had the paper accepted or nominated in the first place. So they both deserve huge kudos for that as well.)

Friday morning our paper was voted Best Paper by the conference attendees, and we were presented with a certificate, a box of Italian lemon cookies, and a box of Irish chocolates. All the Best Paper winners from the various EvoStar conferences and workshops also got to choose a free book from the Springer table. Tyler got a really cool book enitled Leonardo’s Lost Robots, and I got The forgotten revolution: How science was born in 300 BC and why it had to be reborn. (It was all terribly liberal arts of us - pretty much everyone else took evolutionary computation/artificial intelligence books of one form or another.)

Tyler upheld a fine tradition of our students making UMM look really good at conferences like this. From his deportment and grasp of the material, most people assumed he was a graduate student, despite the fact that the looks like he’s about 16 :-). He’s currently doing contract work as a web developer and designer, but is seriously interested in going to graduate school in the near future, and he definitely impressed the folks at the conference. I’ve been really lucky to work (and co-publish) with a string of great UMM students, and am looking forward to continue that with a very sharp student named Sara Lahr when we get back.

The trick for me (sometimes) is remembering just how good our students can be. The room we spoke in was this grand space of inlaid wood and marble that was quite a surprise in several ways. This was made worse by the fact that we were in the first session, so we had very little time to adjust and adapt. I was worried about running long (we had a lot of material to cover), and started to lose my nerve about having Tyler wandering around the room at the beginning handing out the comic. Tyler was really calm and collected about it, though, talked me down, and everything did in fact go really smoothly. The moral? Handouts are Good, really cool comics handous are Even Better, and I need to remember to listen to my students :-).

Thanks a ton to Brian and Tyler and all the people and offices at UMM that supported our work, and everyone who voted for our paper at EuroGP! Special thanks also to Riccardo Poli for hosting me on this sabbatical at the University of Essex. I’ve gotten a ton of cool work done here with Riccardo, including “A linear estimation of distribution GP system” at EuroGP, which was also nominated for Best Paper (and which I suspect was also strongly in the running).

I’ve dumped all the photos Tyler and I took in Naples onto my events account on Flickr. I’ll try to clean up a few to post to my main Flickr account in the next week or so.

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A heck of a party!

Posted in Books, Computing, Education, Events, My writing, Research, Sabbatical, Science, Writing on March 27th, 2008


Last night’s unveiling of A Field Guide to Genetic Programming was a huge success! We had one of the poster “stalls” with 50 copies of the book that we’d purchased from Lulu as our initial “print run”. We were wearing cool t-shirts sporting that wonderful cover, had the nice poster shown to the right, and even had spiffy postcards with the cover to give away.

The book was a big hit with the Evo* crowd, and we sold out the full set of 50 pretty quickly. Lots of folks had us autograph their copies, many of which are now destined to be collector’s items with the signatures of all three of the authors. Some even have the signature of Tyler Hutchison, who did the nifty cover art for us and helped a lot with the roll-out.

There were tons of photos taken at our booth, including candids of us signing and working the crowd, and posed shots with our cool Field Guide shirts. People have promised to send us photos and links, so check back in the next week or two for some of the finest in EC book release amateur photojournalism! (And if you’ve got a photo from the event, or a nifty shot of your copy in its place of pride on your bookshelves, please pass it along.)

As mentioned before, the book is now officially released and available to any and all via lulu.com, both in an inexpensive printed form (what we were selling last night) and as a free downloadable PDF.

So go check it out - 50 whole Field Guide fans can’t be wrong!

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One of the best walking robot demos I’ve ever seen

Posted in Computing, Research, Science, Video on March 24th, 2008

Wow - this is quite amazing. About mid-way through Big Dog (a defense project from Boston Dynamics) slips on some glaze ice and recovers without actually falling down, which involves some super cool real-time responses. The video is long-ish, but definitely worth the investment.

I’d love to know what the burn out rate for the joints and motors are. One of the amazing things about biological organisms is that we can balance muscles against each other to hold a position without wearing ourselves out. Many walking robots, on the other hand, end up exerting so much force in simply maintaining their position that they tend to burn out key components really quickly. Given the responses and forces involved in Big Dog’s movement and balance, you’d think they’d have this problem in spades. If these trials go on for any length of time, however, they presumably managed to handle this to some degree. Their web site says “BigDog’s legs are articulated like an animal’s, and have compliant elements that absorb shock and recycle energy from one step to the next.”; the idea of recycling energy back into the motion (use it instead of fight it) certainly looks promising.

The research is being funded by DoD money, with the hope that robots like this could help carry material in the field. I could imagine nice civilian applications, however. An infirm person in Morris, for example, might be capable of walking to the grocery store, but not capable of carrying a shopping load home. A smaller, electric version of this could be a nice alternative to cars in that situation.

Thanks to Sub-Evil for the pointer!

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Almost ready for EuroGP!

Posted in Art, Books, Computing, Events, My writing, Research, Science, Writing on March 22nd, 2008

EuroGP poster
We’ve ordered a couple of boxes of advance copies our book (a privilege of being the authors). They look really nice, and we’re quite excited about the grand unveiling on Wednesday at EuroGP! For those of you coming to Naples, definitely stop by our table at the poster session that night — you’ll be able to check out printed copies and maybe even score a postcard featuring that wonderful cover :-).

Whether you’re coming to EuroGP or not, we’ll be “turning on” the Lulu site Wednesday, so people can buy printed copies and download the PDF for free. As a teaser, the poster above contains the entire book — just really, really small! If you click on it you can see it a little bigger, but I still recommend waiting a few days for the Real Deal.

Thanks to Riccardo for using some of his major LaTeX mojo to create the mosaic of all the pages, and to Jess and WeatherGirl for their suggestions regarding the design.

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Nothing like a little shameless self-promotion

Posted in Computing, Education, Photography, Research, Sabbatical, Science, Travels on March 10th, 2008

Choosing two points at random

I’ve been sitting on this for a while I waited for EuroGP to get their web site updated; they have, freeing me up to do a little unabashed chest-thumping, leavened with some praise for UMM’s excellent students.

A few weeks from now the Eleventh European conference on Genetic Programming (EuroGP) will happen in Naples Italy. The only other time I’ve been to EuroGP was in 2001 when we were here on sabbatical the first time. I really love the conference, and it’s small and intimate and tends to have a really high signal-to-noise ratio. Unfortunately, it’s also an expensive flight from Minnesota for a three day event, and the timing tends to be really awkward in my teaching schedule, so I’ve never made it back. One of my many fond memories of that conference was winning the best paper award with Riccardo Poli for a pair of papers we’d written together as part of that sabbatical visit. Lake Como and the Alps (Oddly, both times I’ve attended have happened to be the only two times it’s been in Italy. The little photo is from the 2001 event at Lake Como.)

The best paper nominations for this year’s event have been released, and I’m quite excited that both of the papers that I submitted this year are on the list. One is another join project with Riccardo, and the other is a paper with two UMM undergrads: Brian Ohs and Tyler Hutchison.

That’s Tyler in the photo up top, presenting some work he did with Andy Korth and I that won the best student paper award at MICS a year ago; Tyler also did the cover illustration for the forthcoming book Riccardo, Bill Langdon, and I are just wrapping up. In a big happy, Tyler was able to pull together the funds to fly out for the conference, so we’ll be able to do a joint presentation enlivened by his presence and cool drawings. Unfortunately Brian can’t make it, but it’s cool that Tyler can; this will be the first of my students co-authors that’s made it to a European conference with me.

The competition is gonna be tough for the best paper award, including a very nice paper by one of Riccardo’s students (Stephen Dignum). Fingers crossed!

The full program is also now on-line (as a PDF) — it looks like some cool material. I’m quite looking forward to the conference, although I must say I’m a bit nervous about the ongoing trash crisis in Naples (here and there).

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So, so cool looking — but I can’t play yet!

Posted in Computing, Education, Mildly amusing, Science, Video on March 9th, 2008

Much chops to Bad Science for pointing out Phun, a simulation environment/game/construction engine thingie that (judging from the videos) is just super fun (ho, ho, ho) to fiddle with. It seems a wonderfully open-ended platform for making stuff, which is of course the great strength of a pad and paper, or a bucket of Legos. This demo video gives a sense of the range of possibilities:

There’s a YouTube group devoted to this thing, and the number and variety of little clips there also speaks well to the Phun’s flexibility. We even have one person building a binary adder, and another a working pinball machine. Very, very cool.

The sad, sniffle, miserable bit is that Phun doesn’t run on Macs at the moment. It supports for Linux and Windows, though, and there are people working on a Mac port, so my fingers are crossed. It just seems like it would be too damn much fun to play with.

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Not quite a wave

Posted in Art, Computing, Mathematics, Research, Science on March 6th, 2008

Not quite a wave

Sometimes you’re just minding your own business, trying to get a little science done, and a little art pops out at you all unexpected.

What?!? You want to know where this comes from? All is revealed beneath the fold…

Read the rest of this entry »

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