# Monthly Archives: August 2010

wavelets and multiresolution (Source: http://blip.tv/)

## flops

At least in Javascript, that’s how it works.  Apparently floating-point operations are not exactly accurate in a computer, the way integer arithmetic or arbitrary-precision arithmetic is. Javascript scheherazade:~\$ js Rhino 1.7 release 2 2010 01 20 js> .1+.2 0.30000000000000004 Berkeley … Continue reading

The Amazon preview was really funny! (Source: http://www.amazon.com/gp/product/1400054788?ie=UTF8&tag=hiremebecauim-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=1400054788)

## “This has become something of a ‘me-too’ trade lately,” said Mark Spitznagel, a former Taleb trading partner at Empirica. The upside of everyone piling onto these catastrophe protection funds is that — guess what — all those people hedging against a catastrophe will reduce its likelihood of happening.

PIMCO offers Black Swan protection fund

## Probability of God

Sigh. Apparently if you go beyond the Amazon preview, Unwin just makes up some numbers, plugs them into the Bayesian machine, and — poof! — calculates the probability he wants for God’s existence, 2/3 (which he later ups to 95%). … Continue reading

This gallery contains 6 photos.

Which of these pictures come from a random normal distribution and which come from a mixed distribution? plot(rnorm,-3,3); mix <- function(x) { rnorm(x)+rnorm(x-3) } plot(mix(x), -3,3);

I’m deeply skeptical about this.  Why is Ernie Chan telling me how I can make millions?  Is he just trying to increase the pool of suckers for him and his like to take money from?  If so, how does he … Continue reading

## (A Lévy-Pareto process has infinite variance.) comptes_rendus_28 Cauchy distribution has infinite variance as contrasted to… Gaussian distribution which shoots down REAL fast: fast.

original Mandelbrot article on cotton prices as a Levy process

This is what I have been reduced to.  Henry County Public Library, I curse thee. (Source: http://www.amazon.com/gp/product/0764503898?ie=UTF8&tag=hiremebecauim-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=0764503898)