Mercurial > hg > nsaunier > traffic-intelligence

comparison python/utils.py @ 876:c7e72d758049

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minor update to avoid integer issue
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Wed, 08 Mar 2017 17:05:29 -0500
parents a8de3c93f6b7
children d8ab183a7351
comparison
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875:45384b45e35a 876:c7e72d758049
80 print('${0} \pm {1}\\frac{{{2}}}{{\sqrt{{{3}}}}}$'.format(mean, k, stdev, nSamples)) 80 print('${0} \pm {1}\\frac{{{2}}}{{\sqrt{{{3}}}}}$'.format(mean, k, stdev, nSamples))
81 return mean-e, mean+e 81 return mean-e, mean+e
82 82
83 def computeChi2(expected, observed): 83 def computeChi2(expected, observed):
84 '''Returns the Chi2 statistics''' 84 '''Returns the Chi2 statistics'''
85 result = 0. 85 return sum([((e-o)*(e-o))/float(e) for e, o in zip(expected, observed)])
86 for e, o in zip(expected, observed):
87 result += ((e-o)*(e-o))/e
88 return result
89 86
90 class DistributionSample(object): 87 class DistributionSample(object):
91 def nSamples(self): 88 def nSamples(self):
92 return sum(self.counts) 89 return sum(self.counts)
93 90