Category Archives: work

Schloss Dagstuhl: Computer Scientist Heaven

Somewhere in a remote but picturesque location in southern Germany, there’s a special castle called Schloss Dagstuhl. Every week, the castle fills up with a smallish group of Exceptionally Privileged Computer Scientists, who can only go there Because They Have Been Invited. Every week hosts a different field; In my case this was the Scientific Visualization seminar, one of the oldest participating groups. Everything has been setup just so to guarantee a perfect computer sciencey week for all guests. Because I’ve already been boring too many people with this story in person, I thought it prudent to write it up. Let’s hope it’s not a first (and second!) rule of Fight Club situation, in which case posting frequency over here might drop quite drastically.

Schloss Dagstuhl, picture courtesy of Wikipedia.

To begin with, the meals are exquisite, three times a day, every day. As we all know, the path to a computer scientist’s heart is through buying them new gadgets, but feeding them well is a great backup plan. Another very nice touch is the fact that seating is deliberately randomised, meaning that your introvert self is forced to sit at the table with a different group of guests during each lunch and dinner, in turn meaning that even if you try otherwise, you will probably get to have a good conversation with every one of the fifty attendees.

In the case of our seminar, the working day consists of presentations in blocks of three or four, followed by a longer block of discussion on all the preceding presentations, panel style. Attendees were all asked not just to give a standard scientific presentation, but to discuss open problems and future challenges in their respective sub-fields. I (and many others, judging by the aggregated post-meeting feedback) really enjoyed this format. The presentations made one think, and the discussion blocks were long enough to really get into the details. You can check out abstracts and slides on the seminar website.

After a full day of quite intensive discussion, there were breakout sessions during which four subgroups started working on the various chapters of a new Springer book that should appear sometime early in next year. The book will deal with multi-field, uncertainty, biomedical and scalable visualization, and it has the makings of being a keeper.

The other extremely important magic bit about this castle is the abundance of real coffee machines (ones that grind coffee beans for every cup), snack corners and, uhm, beer fridges. You can’t really go anywhere, as you’re in the middle of nowhere, so after dinner the conversations tend to continue till late in the night, conversant stamina enhanced by said coffee and beer facilities. Evil science plans were made, good old-fashioned deep conversations were had and the early next morning consequences were flatly ignored. I haven’t laughed quite so much in a long time, but that part of the programme prefers, and has the right, to remain completely silent.

If you ever get the invitation, don’t hesitate for a second to accept: You shall return an exhausted but terribly happy computer nerd.

I like nano-sabbaticals. [Weekly Head Voices #39]

This past week I was away from work, doing a nano-sabbatical in my secret lair.

Example of some random evil lair. Mine is exactly the same, except that it's not in a hollowed-out volcano, doesn't have my face on the outside and is not near the sea.

I thought I was being original by dubbing my week-long self-imposed working isolation a nano-sabbatical, but google knows better. It turns out other people call their week-long sabbaticals nano too.  Durn. In any case, as you will recall I also went away on a month-long micro-sabbatical in 2009, but this time I wanted to experiment with spending almost a whole work-week focusing on a single task, trying to finish a survey article I’ve been working on for almost two years. The week is now over and the article is not ready for submission yet, but it has become a completely different and much improved animal during the past week. I’m a happier person too!

I would like to share with you some of the high-level conclusions I’ve drawn from this experiment:

  • Over the past years, I’ve had to get used to multi-tasking. Switching to focus mode was quite a challenge, as my reflex is to switch, switch and switch. Judicious application of pomodori, killing of browser windows and general self talkings-to mostly helped. I have it mostly under control, but I’m sure I could push up my effectivity further with more practice.
  • I did manage to work quite efficiently from day one, but only by the end of the second day did I find myself in the right frame of mind for writing this kind of paper. It’s one of those cases where you can work really hard, but if you’re not in the right frame of mind, you’re not being effective.
  • At the beginning of the week, I had configured a vacation email auto-reply, keeping the exact reason for my absence vague. The idea is that I would act as if I were on vacation, that is not responding to email and not taking care of any other work-related issues. Still, I couldn’t help taking care of the bare minimum of important matters, which acted as an extra distraction. I think for any sabbatical, nano to mega, it’s important where exactly you draw the line. During my 2009 sabbatical, I had the strict rule that I could only do normal work-related things during the evenings, which worked quite well.
  • By the end of the week I was completely embroiled in interesting article-related issues, with very little else interrupting my concentration. It was refreshing having almost all thought-processes dealing with one topic, instead of bouncing between too many concurrent projects.
  • I truly love the process of writing, even if it is scientific writing, which requires a different attitude regarding the structuring of one’s text and the willingness to rewrite a piece of text as many times as it’s required to get it exactly right. There’s nothing like looking at a single short sentence that concisely communicates the thought just so.

On the nerd front (skip to the next paragraph if you’re feeling non-nerdy): eclipse, texlipse, mercurial, jabref and dropbox make for a beautiful LaTeX editing workflow, on Linux and Windows machines. There’s nothing like continuous LaTeX builds for the gainful utilisation of the idle and overpowered CPUs in your workstation or laptop.

There will definitely be more weeks like this one just past, and perhaps even a real sabbatical in the not-too-distant future. It is unfortunate that multi-tasking has become so de rigueur in modern life. There is a whole lot to be said for the zen of pouring oneself into just that one important thing.

On the importance of taking notes. [Weekly Head Voices #38]

Post summary: Part one is about friends graduating from Evil School, part two is rather short mentioning vague bits of good news and part three is 100% time management and productivity boosting goodness! Feel free to skip, skim or reorder!

One

On Thursday, February 10, 2011, my dear friend Mister Krekel graduated from Evil School after years of hard work and evil-doing, and will henceforth go through life as the formidable Doctor Krekel. Please do watch out.

Evil School. (Photo by the talented fpixel.wordpress.com.)

The joyous transition took place in the Evil School’s Academiegebouw in Leiden, and this time yours truly (I’m referring to me in a round-about fashion) even had the great honour of playing a part in the formal proceedings. If you’re curious as to what exactly this ritual constitutes, see this previous edition of the WHV on the graduation of another terribly evil colleague. I believe that the bunch of us now constitute a bona fide Axis of Evil. No, the evil jokes can unfortunately not stop yet.

The Party was held in a secret cafe nearby. You will notice that I’ve capitalised Party, as it was not your average run of the mill Evil School graduation affair, but a social event of note. Here in Holland, the PhD defence and graduation are a combined affair, and so the whole day is dedicated to just one person. It is actually very special: People take time off from work, sometimes even temporarily put aside their differences, and travel from all over to attend the festivities. It’s like a wedding, except that there’s only one of you. I can only recommend it very highly. At the Party, everyone had clearly read the memo, and they were there with that singular goal in mind: Celebrate the freshly minted Evil Doctor. Presents were given, speeches were held, photos were shown, beer was imbibed and, flying in the face of all advice concerning the mixing of alcohol, cameras and social networking, the best evil photographer in town, who’s coincidentally also in Evil School, took the most amazing photos that you should be able to see on Facebook if you’re one of the privileged few to belong to The Network, also known as The Friends of the Axis of Evil.

Two

On the good news front, you’ll see (or not) on the list of EuroVis 2011 conditional accepts, that a paper by cool colleagues from far away, to which I contributed a small part, has been conditionally accepted, and hence has a significant chance of being presented at said event in Bergen, Norway (May 31 to June 3). We also have plans to submit a poster (or two), so there’s an even more significant chance that I will make an appearance at this fantastic conference! We’re also cooking up various odds and ends that will hopefully crystallise sufficiently by the end of March to be submissible for VisWeek 2011. Cross yer fingers.

Three

Today’s backyard time management section is in fact more about planning than it is about notes. However, my Pro-Tips involve combining them in an easy to implement productivity booster. When people start out in research, one of the first bits of advice they get is keeping some kind of lab journal. I think this advice applies to more than just research: If you do any kind of independent or project work, jotting down your activities, thoughts and results during the day is useful in helping to structure your thought processes, and also very helpful when you have to backtrack a complex multi-day procedure. During my Ph.D., I filled a number of real cardboard-and-paper books with notes. More recently, I’ve started using Google Documents for the same purpose. Besides all the other advantages, having to document explicitly your work output keeps you productive and on your toes.

Pro Tip #1: Keep a lab journal, even if you don’t work in a lab.

I’ve mentioned before that my resolutions for 2011 included more concrete planning. This has manifested in a work-in-progress planning for the whole year, including milestones, awards won, and so forth, but much more practically, it has manifested in a little lab-journal-compatible trick. Every morning when I sit down to begin the day, I spend a few minutes thinking and then start the day’s journal entry by writing down, as concretely as possible, the tasks that I plan to complete by the end of the day. This also ensures that I spend effort on the important things, and not only on the urgent things. So, that brings us to:

Pro Tip #2: At the start of each day, write down in your lab journal exactly and concretely what you plan to accomplish by the end of that day.

These pro tips appear to be quite straight-forward, but together they help one to focus, and to keep tabs on one’s effective productivity. In other words, just being terribly busy the whole day gets you nothing; the trick is being terribly busy in all the right directions.

P.S.

Somebody is clearly pushing the boundaries of awesomeness… cowboys AND aliens!

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The Future is Sick [Weekly Head Voices #36]

Post summary: Conference, VXLabs, SIP, boots, backyard philosophy on you the consumer, dramatic reading. Read on for more!

Just before the weekend I spent two days at the Dutch Bio-Medical Engineering Conference in Egmond aan Zee, in a ginormous seaside hotel. Probably because I attempted to keep up with the young ones during their nightly escapades, I’m currently dealing quite badly with a serious cold, which is why this is the first sick blog post of 2011.  Besides all those germs, I also brought you this photo of said seaside right after sunset:

Sunset on the Egmond aan Zee beach. Gorgeous, innit? There's even a dude walking on the beach so that you can wax all pensive.

The conference was an energetic and motivating affair, at which yours truly even got to chair a session, during which I tried, in spite of not getting to bed all that early the night before, to Keep Things Extremely Punctual As Well As Mildly Entertaining. I succeeded in the former, you’ll have to ask the audience about the latter.

The absolute highlight, for me at least, was the capstone on Friday by Professor Richard Satava, a surgeon with an amazing vision of the future. Bordering on science fiction but for a large part backed by his own and other groups’ research, his superbly delivered presentation touched on surgical operating rooms completely staffed by robots (some elements remotely controlled by a surgeon), cell engineering, surgery robots that heal troops at the scene of the crime (hehe), genetic engineering, cloning and a healthy dash of trans-humanism. By the end the whole room was collectively straining at the leash to go and genetically upgrade anything and anyone they could find. With a room full of BME researchers, that’s more dangerous than it sounds. :)

Other note-worthy items of the past two weeks can be summarised in the following neat bullet list:

  • I’ve started a new blog, called VXLabs, for matters that are too nerdy even for this blog. If you’re interested, you can start by reading the HTC Desire Z (my lovely new smartphone) review I’ve recently gotten around to writing. If you’re nerdy enough, you might consider subscribing VXLabs as well!
  • There are far cheaper ways than Skype to call telephones around the world. With SIP software, such as SIPDroid on Android, you can use cheap SIP servers that even offer free calls to many destinations. See this page for a list of just the betamax (German VOIP company) providers and the free countries that they support.
  • I was approached by a company producing Ugg-like boots to review their boots, get a free pair in the process, and get a good deal for my readers. This is probably because I went on about those BEAUTIFUL Timberland boots in one of my previous posts. Although I was flattered that the gentleman in question thought my widely-read (haha) opinion would be good for his brand and he called this a fashion blog (!!), I declined, stating that my readership probably is more into Timberlands than Uggs. That’s true, readership? Right?!
  • Micro Backyard Philosophy: After one of those late nights refreshing my Twitter, Facebook, Google Reader and GMail for the Nth time, I got to thinking about how the internet sometimes turns us into 100% consumers, leaving no room for creativity. It’s insidious, because we believe that the internet will give us exactly what we crave if we just know how to search for it, and that it should do so with that next press on the refresh button, when in fact this is hardly ever the case, especially when that which you crave is in fact to create. Remember this the next time it’s getting late and you think Just One More Refresh. Don’t push that button. Sit back and think about what you really want to do.

That’s it boys and girls, thank you very much for reading this far! You go and have yourselves a fabulous and especially creative week. If you get lonely waiting for the next edition of the Weekly Head Voices, marvel at this dramatic reading of a bad user game review, creativity at its finest:

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An Inside Job. [Weekly Head Voices #33]

Hiatus: temporarily over.

My sleeping patterns are not quite what they used to be, mostly due to the latest manifestation of our little gene pool over here. Added to that, I’ve been really busy. Added to that, work has been throwing unnecessary curve-balls that have done their part in keeping me (pre)-occupied. In the end, a dash of perspective, several extremely wise friends and a generally sunny predisposition go a really long way, so here I am. :)

In this post, I’m going to touch upon the highlights of the past seven weeks (40 to 46) and I’m going to do so with bullets, seeing as I’m in a bullety-kind of mood.

  • I spent a week in Stellenbosch teaching Information Visualisation! Read all about it in this special blog post.
  • The week after that my mom came to visit us. She really has the best genes.
  • I met my new work laptop: A Dell Latitude E6410 with Core i5 M540 2.53GHz CPU, 4G ram, 500G HDD, NVidia NVS 3100m GPU with 512 MB video mem. It’s a 14″ latop (15.4″ is a completely useless format, flame me in the comments), but due to the materials used quite heavy. I like it!
  • Another one of our STW NIG research proposals has been granted. I conceived and developed this one together with colleagues from the LUMC Departments of Anatomy, of Surgery and of Orthopaedics. The title is High-definition Atlas-based surgical planning for Pelvic Surgery and we get to combine high-resolution human histology, mega-volume rendering, , biomechanical modelling and surgical simulation. With this grant we can appoint two more Ph.D. students (one in my group, one at the LUMC) for four years to work on this!!
  • The week after that I went to Salt Lake City (Utah, US and A) to attend the conference previously known as IEEE Visualization. It was AWESOME! (blog post half-written, will soon publish).
  • The week after that I had a really cool dream: I was playing high-speed catch with a bunch of people outside. The ball was randomly changing shape between rock, papers and scissors. If you wanted to catch it, you didn’t only have to be at the right place at the right time, but your hand also had to be in the right complementary configuration to catch the shape-shifting ball.
  • Now that we’re talking about dreams: I finally saw Inception and was completely blown away. It’s not about being complicated, it’s about being a well-told story and a fantastically filmed movie. What I positively adored, is the fact that Nolan doesn’t require much: He only needs you to believe that dreams can be shared, without giving away too many of the details of the mechanism, and then builds a marvellous story on that canvas. My absolute favourite scene was the waking up on the plane, just before the landing, almost at the end of the film. I loved the way in which the characters looked at each other, and the possible interpretations of their expressions.
  • On the topic of the Underworld gig in the Heineken Music Hall: I hope I have my voice back before my morning lecture tomorrow morning. Thank you Fantastic Friends!

That’s it kids. If you’ve come this far, you’re now mostly up to date. Please leave me a comment, it’s good for my serotonin! I hope you have a great week. To get you off to a  good start, here’s a music video showing what an infectious idea could look like…