User : adkatrit

Title User Language Tags Description Date
backup into folder daily adkatrit Bash

i've got this running on an hourly cron. works beautifully.

 June 29
robotic script done notification adkatrit Bash February 18, 2011
Hierarchical Clustering adkatrit Python

Helps if you have a distance function. This will be implementation specific, but this is the main algo

 February 11, 2011
K-Means Clustering adkatrit Python

This is from the book: Programming Collective Intelligence

 February 11, 2011
Entropy adkatrit Python

takes a list and returns the entropy

 February 11, 2011
Variance adkatrit Python February 11, 2011
Gaussian adkatrit Python February 11, 2011
calculate angle between two vectors adkatrit Python February 11, 2011
Weighted Mean adkatrit Python February 11, 2011
Tanimoto Coefficient adkatrit Python February 11, 2011
Gini Impurity adkatrit Python February 11, 2011
Pearson Correlation Coefficient adkatrit Python February 11, 2011
Euclidean Distance adkatrit Python February 11, 2011
Matching elements in an array adkatrit Java

compare individual array elements with one another, without doing the same comparison twice (3vs2 then 2vs3). this reduces the number of iterations by roughly half. it's still O(n^2), an 1000 member array won't iterate a 1000X1000 times, it will be (1000X999)/2. efficient!! an array of 0,1,2,3 will print out the following: 01,02,03,,12,13,2,3 ENJOY MY MATHS

 October 30, 2010
new york times article api function adkatrit PHP October 16, 2010