def test_poisson_loglikelihood(self): l = 4.2 poisson = Poisson(l) samples = poisson.sample(100) loglik0 = stats.poisson.logpmf(samples, l) loglik1 = poisson.loglikelihood(samples) self.assertLess(max(abs(loglik0 - loglik1)), 1e-8)
def test_poisson_pickle(self):
tmp_file = mkstemp()[1]
p0 = Poisson(2.5)
with open(tmp_file, 'w') as handle:
dump({'p': p0}, handle)
with open(tmp_file) as handle:
p1 = load(handle)['p']
x = p0.sample(100)
self.assertLess(max(abs(p0.loglikelihood(x) - p1.loglikelihood(x))), 1e-6)
