Category ArchiveMath



Math 01 Jun 2008 09:41 pm

The Gaussian Processes Web Site

The Gaussian Processes Web Site, created seemingly by the guys who wrote the seeming bible of gaussian processes as they relate to machine learning.

I’m afraid it might be good bedtime reading.

Humor &Math &Science &Software &Words 01 Jun 2008 09:38 pm

Harry Potter vs David Mackay David MacKay: Information Theory, Inference, and Learning Algorithms: Humour


David MacKay: Information Theory, Inference, and Learning Algorithms: Humour
: “Comparison of Information Theory, Inference, and Learning Algorithms with Harry Potter”

The site for those who are debating buying a Harry Potter book or buying a machine leaerning book by David Mackay and need a little help in comparing the two.

Math &Programming Languages 09 Feb 2008 06:01 pm

Project Euler

Project Euler: 188 little programming math problems to amuse you.

Art &Math &Science &Software 07 Oct 2007 03:34 pm

Turing Machine in Conway’s Life

Vadim Bultiko site has a cool paper by Paul Rendell on creating a Turing Machine in Life. I didn’t get to read it all in detail yet, but this looks pretty clever.

There is a lot more, including the data and patterns, on Paul Rendell’s site.

Humor &Math &Science 10 Feb 2007 12:45 pm

Classic XKCD strips

Some amusing comics from the XKCD strip, found at Classic XKCD strips. I particularly like the one above. And it is true, check at Google Calculator. But what does it mean?

This was originally found via a Silicon Valley Patterns mailing list post about a programming puzzle at: Facebook for their engineering candidates.

Math &Programming Languages &Science 29 Nov 2006 03:11 pm

Formulas! Formulas! Cheat Sheet of Formulas Here!

Theoretical Computer Science Cheat Sheet. Actually, it is a handy collection of all kinds of useful formulas.

(Via Lambda the Ultimate.)

Math 06 Sep 2006 06:45 pm

Poincaré Project

The Poincaré Project is one guy’s effort and journey towards understanding the math necessary to understand Grigori Perelman’s proof of the Poincaré Conjecture (another description here.)

It’s a whole bunch of math that I don’t know, but so far I am following what he says (I’m about half-way through.)

(Via Anarchaia.)

Art &Math &Muzak 02 Sep 2006 02:58 pm

Giant Steps Animation by Michal Levy

Giant Steps by Michal Levy is a very slick, very cool animation to John Coltrane’s Giant steps.

(Via Projectionist.)

Math &Miscellaneous &Software 29 Aug 2006 01:00 pm

Unit Conversion in OS X (or any unix)

I never realized that there was such a handy tool available at the command line before. D’oh. That is great.

FOLLOWUP: It doesn’t do temperatures, only straight multiplicative conversions. Still handy.

UNITS(1)                  BSD General Commands Manual                 UNITS(1)
NAME
     units -- conversion program
SYNOPSIS
     units [-f filename] [-qv] [from-unit to-unit]


[segovia:~] bobevans% units
500 units, 54 prefixes
You have: 2 pints
You want: cups
        * 4
        / 0.25
You have: 2 imperial pints
You want: cups
        * 4.8038
        / 0.20816853
You have: 4 quarts
You want: bushels
        * 0.10742088
        / 9.3091775
You have: .25 acres
You want: feet * feet
        * 10890
        / 9.1827365e-05
You have: 

Math 23 Aug 2006 11:12 pm

Distance Measuring

Distance Measures for vectors. Various strategies you might use with pointers to discussions of why you might choose one over another.

(Via Anarchaia.)