Archive for November, 2008

Blog Personality Analysis?

Thursday, November 20th, 2008

Typealyzer asks you the enter the URL of a blog, and attempts to determine the personality of the author according to the Myers-Briggs Type Indicator. (via Megan McArdle.)

Naturally I immediately put in the URL of this blog and was told I am an “INTJ”, which it describes as a nerdy scientist type. Then I put in the URL of my other blog, where I write about “fun” stuff. This time it said I was an “ESTP”, which it describes as “active and playful.”

Of course these blogs have very different tones. Nevertheless the term “personality” as used by psychologists (including Meyers and Briggs) is something that applies to people, not blogs, and it is not supposed to change depending on what you are writing about. If Typealyzer gives different results for two blogs written by the same person, then it is not a reliable measurement technique.

Typealyzer also displays a chart purporting to show which areas of the brain were used in writing the blog. I’m not an expert in this field but I suspect this is pure hokum.

aLinks 2.0 Bug Fixes

Friday, November 14th, 2008

I had been happily using the “aLinks” WordPress plugin by Sean Hickey for quite a while. The plugin automatically generates links for keywords that you specify. Version 1 did everything that I wanted, but it broke when I upgraded to WordPress 2.6. I found that Sean had written a completely new aLinks 2.0, so I installed it and found that it mostly worked, though with some minor problems.

Then Sean seemed to vanish from the face of the Internet. His web server went off line, making it impossible to even send him an email, and has been that way for several months.

So I had no choice but to go into the source code and fix the bugs that were bothering me. Since the code is released under the GNU General Public License (GPL) I am making the revised plugin available to anyone who is interested.

New WordPress 3.x compatible version.

Old WordPress 2.x compatible version.

Bugs Fixed

  1. aLinks failed to respect word boundaries when identifying keyphrases, causing links to be inserted in the middle of words.
  2. aLinks was ignoring the “classes” setting which allows you to assign one or more CSS classes to the links.

Warning

If you are upgrading from aLinks 1.x you must first export your keyphrases to a file, then import them back in after you have installed version 2.0. Otherwise you will lose your keyphrases.

Other Notes

To install, unzip and copy the entire alinks directory to your wp-content/plugins directory.

The documentation is included as a PDF file in the alinks/includes directory.

Michael Lewis on the Financial Collapse

Wednesday, November 12th, 2008

Michael Lewis, the author of Liar’s Poker, delivers a blow by blow account of the final days of the subprime bubble, from the viewpoint of some people who not only predicted the collapse but managed to profit from it by shorting subprime derivatives. (via Tim Bray.)

Some of Lewis’s observations:

  • He mentions the central role played by the bond rating agencies, who screwed up in a big way. Amoung other things Standard & Poors apparently relied on a computer model that did not take into account the possibilty that home prices might fall. Most of the institutional safeguards intended to keep something like this from happening relied on these agencies to give reliable ratings. Some sort of reform is probably needed to address the conflicts of interest that they face.
  • He thinks the problem really started when investment banks first switched from partnerships to public corporations. A partner is personally liable for the firm’s debts and thus has strong incentives to make sure that it doesn’t take on insane levels of risk. A corporate executive knows that it’s the stockholders who bear the risk, and thus will be tempted to take big risks in order to earn big bonuses.