Christian Widmer cwidmer

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Activision-Blizzard
Los Angeles

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cwidmer / powerset.py

Last active December 30, 2015 10:08

Create power-set (the set of all possible subsets) from a python list

	def power_set(orignal_list):
	'''
	PowerSet of a List

	@param orignal_list: list from which to construct a powerset
	'''
	list_size = len(orignal_list)
	num_sets = 2**list_size
	powerset = []
	# Don't include empty set

cwidmer / random_sequence.py

Created December 5, 2013 20:35

generates a random sequence of length over alphabet

	def rand_seq(alphabet, length):
	"""
	generates a random sequence of length over alphabet

	@param alphabet: alphabet from which to choose characters
	@type alphabet: list<str>
	@param length: length of random string
	@type length: int
	"""

cwidmer / compressed_pickle.py

Last active August 22, 2021 06:19

save/load compressed pickled objects in python

	import cPickle
	import bz2


	def save(filename, myobj):
	"""
	save object to file using pickle

	@param filename: name of destination file
	@type filename: str

cwidmer / auc.py

Last active December 30, 2015 09:59

code snippet to calculate the common performance measures, area under the precision-recall curve and area under the receiver operator characteristic curve

	import pylab


	def plot_roc(y, out, label="", out_fn=None):
	"""
	show or save ROC curve
	"""

	pylab.figure()
	plot_roc_noshow(y, out, label=label)

cwidmer / pylab_external_legend.py

Last active December 30, 2015 08:39

snippet to create matplotlib plot with title, grid and externally located legend

	import pylab

	data1 = [1,2,3,4]
	data2 = [2,3,4,5]

	pylab.plot(data1, "-o", label="meh")
	pylab.plot(data2, "-o", label="arr")

	pylab.title("example")
	pylab.grid(True)

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