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Move mpmath dependency to unittest target that uses it, and explicit import of mpmath functions to reduce size.

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PiperOrigin-RevId: 239056360
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Galen Andrew 2019-03-18 14:03:19 -07:00 committed by A. Unique TensorFlower
parent a1e9ca2a18
commit 0aad84ab3f
1 changed files with 11 additions and 7 deletions
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18
privacy/analysis/rdp_accountant_test.py
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@ -22,7 +22,11 @@ import sys
from absl.testing import absltest
from absl.testing import parameterized
import mpmath as mp
from mpmath import exp
from mpmath import inf
from mpmath import log
from mpmath import npdf
from mpmath import quad
import numpy as np
from privacy.analysis import rdp_accountant
@ -38,21 +42,21 @@ class TestGaussianMoments(parameterized.TestCase):
def _log_float_mp(self, x):
# Convert multi-precision input to float log space.
if x >= sys.float_info.min:
return float(mp.log(x))
return float(log(x))
else:
return -np.inf
def _integral_mp(self, fn, bounds=(-mp.inf, mp.inf)):
integral, _ = mp.quad(fn, bounds, error=True, maxdegree=8)
def _integral_mp(self, fn, bounds=(-inf, inf)):
integral, _ = quad(fn, bounds, error=True, maxdegree=8)
return integral
def _distributions_mp(self, sigma, q):
def _mu0(x):
return mp.npdf(x, mu=0, sigma=sigma)
return npdf(x, mu=0, sigma=sigma)
def _mu1(x):
return mp.npdf(x, mu=1, sigma=sigma)
return npdf(x, mu=1, sigma=sigma)
def _mu(x):
return (1 - q) * _mu0(x) + q * _mu1(x)
@ -61,7 +65,7 @@ class TestGaussianMoments(parameterized.TestCase):
def _mu1_over_mu0(self, x, sigma):
# Closed-form expression for N(1, sigma^2) / N(0, sigma^2) at x.
return mp.exp((2 * x - 1) / (2 * sigma**2))
return exp((2 * x - 1) / (2 * sigma**2))
def _mu_over_mu0(self, x, q, sigma):
return (1 - q) + q * self._mu1_over_mu0(x, sigma)