Archive for category: Opinion

Courting controversy

August 25th, 2010 by james

There’s nothing like an overtly contentious statement to bring in the traffic. And as they go, this is a pretty good one: “Why higher education is like a Ponzi scheme“.

The linked post is actually for a radio program, the content of which was based on this original article by a professor of psychology from the University of Kentucky. In it, she argues that there aren’t enough tenure-track jobs to support the PhD students coming through the system and that students are exploited to prop up the teaching and research of over-stretched professors:

“In short, I think academia shares many of the classic elements of a social trap: It is in most faculty members’ and departments’ best interests to recruit a lot of graduate students. Churning out PhDs is one of the major metrics of departmental ’success’. Departments need graduate students to teach their classes, and faculty members need them to run their labs. Yet, as in any social trap, when everybody acts in their self-interest, a negative collective outcome ensues.”

Her solution? Not to accept any more PhDs:

“I’m no longer willing to pin my students’ prospects for their futures on an ephemeral job market that shines in the distance like a mirage … I don’t want to be part of the problem any more, and I think I will sleep better knowing that I am no longer contributing to an academic job market that bears an uncomfortable resemblance to a Ponzi scheme on the verge of falling apart.”

(more…)

The Future of the Journal, by Anita de Waard

June 12th, 2010 by jose

I just found this presentation, and thought it’s worth bringing it to the attention of ap.com readers:

Anita de Waard is the director of Disruptive Technologies at Elsevier. A company that has a position with such a name has my sympathy. Looks like publishers are slowly realizing that they can have a huge impact on how science is done, and how fast it moves, if they simply paid more attention to modern trends.

Only habit prevents us researchers from realizing that the media we use the most, a paper article with a review cycle of years, is woefully wrong in this day and age.

A somewhat related idea are the 5 stars of open linked data:

★ make your stuff available on the web (whatever format)

★★ make it available as structured data (e.g. excel instead of image scan of a table)

★★★ non-proprietary format (e.g. csv instead of excel)

★★★★ use URLs to identify things, so that people can point at your stuff

★★★★★ link your data to other people’s data to provide context

If scientists and publishers have opendata in mind (and the trend is there!) doing research becomes more fun immediately (no more mails to the authors asking for data that get no response). Seeing that the academic publishing industry has at least one person (Anita) that gets it makes me feel good. Looks like Elsevier has a head-start.

Quote of the day

October 31st, 2009 by jose

Peter Drucker: "There is nothing so useless as doing efficiently that which should not be done at all."

What’s Wrong with Probability Notation?

October 22nd, 2009 by jose

Sometimes I wonder why many humans (me included) have trouble understanding probability. In cognitive science, probabilistic models are taking over most areas. Still, most people struggle with them. Could it be that the notation is just hard to swallow? What’s Wrong with Probability Notation? is a magnificent post that gives some basic reasons:

The first two issues arise in the usual expression of the first step of Bayes’s rule,

p(x|y) = p(y|x)p(x) / p(y),

where each of the four uses of p() corresponds to a different probability function! In computer science, we’re used to using names to distinguish functions. So f(x) and f(y) are the same function f applied to different arguments. In probability notation, p(x) and p(y) are different probability functions, picked out by their arguments.

This is one clear communication problem. Ideally we want more people to follow probabilistic reasoning. Doctors, judges, etc all show significant struggles when given probabilities (see e.g., Helping Doctors and Patients Make Sense of Health Statistics).

But how do we tackle this problem? Changing notation is easier said than done. In fact, anyone departing from traditional notation will have to convince reviewers that his notation is better… and add to the risk of cause a less-than-ideal impression.

Any ideas?

Alternative talk styles

October 12th, 2009 by jose

I went to a toastmasters meeting, and found some interesting tricks to improve presentations. For example, they count the "ahhs", "hmm" etc. Since then I’m surprised at how many scientific talks are filled with those. A minor thing, but very effective. I didn’t keep going to meetings because it looked to me that the presentation style they use is not very compatible with the academic one (e.g., practicing improvisation). But it got me thinking… what alternative talk styles are out there? Is the ’standard’ one the best? In a way, flying people all around the world to ’see’ the talk is a bit of a lost cause, because body language doesn’t weight as much as in other communication styles. Of course, the networking and face-to-face time, to work on ideas on napkins, may make up for it, but still…

What follows is a walk through alternative talk styles that you may want to try in your next conference. Some require you to be the organizer, and enforce certain rules. Others, you can try just being the speaker. On with the show!

Pecha Kucha is a presentation format in which content can be easily, efficiently and informally shown, usually at a public event designed for that purpose. Under the format, a presenter shows 20 images for 20 seconds apiece, for a total time of 6 minutes, 40 seconds. They took the name Pecha Kucha from a Japanese term for the sound of conversation ("chit-chat"). It was being aimed primarily at creative industries professionals.

A Lightning Talk is a short presentation given at a conference or similar forum. Unlike other presentations, lightning talks last only a few minutes and several will usually be delivered in a single period by different speakers. This has actually being already adopted by academics (I’ve been to one!) and in my experience, it’s adored by the audience and well attended.

Ignite is a style of presentation where participants are given five minutes to speak on a subject accompanied by 20 slides. Each slide is displayed for 15 seconds, and slides are automatically advanced.

Last we have the TED talk. The motto of TED is ‘Ideas worth spreading’. If you are an academic, you should ask yourself, ‘is any of my ideas worth spreading?’. So if someone invited you to give a TED talk, what would you talk about? What if you make your next invited talk a TED-like talk?

Feel free to report your experiences with alternative talk styles in the comments…