Herve Schnegg hschnegg

Data Scientist. Longtime data geek. Swiss Londoner.

hschnegg / MultivariateGaussianAnomalyDetection.py

Created June 6, 2017 12:00

	from __future__ import division
	import numpy as np
	import scipy.stats
	import math


	__author__ = 'herve.schnegg'


	class MultiGaussianAnomalyDetection(object):

hschnegg / GaussianAnomalyDetection.py

Created June 6, 2017 11:57

	from __future__ import division
	import numpy as np
	import scipy.stats
	import math


	__author__ = 'herve.schnegg'


	class GaussianAnomalyDetection(object):

hschnegg / PostgreSQL test if text can be cast to numeric

Created January 28, 2014 15:08

PostgreSQL: Test if text can be cast to numeric

select (mytext ~ '^([0-9]+[.]?[0-9]*|[.][0-9]+)$');

hschnegg / higher-order-functions.r

Last active December 15, 2015 21:09

Higher Order Functions in R

	# Dummy attributes matrix
	x <- matrix(c(1:12), ncol=4)

	# Select attributes for combination (TRUE: in)
	s1 <- c(TRUE, TRUE, FALSE, FALSE)
	s2 <- c(FALSE, TRUE, FALSE, TRUE)
	sel.x <- data.frame(s1, s2)

	# Use higher order functions