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Merge pull request #126 from fjosw/fix/gapped_irregular_dtauint

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Fix: gapped irregular dtauint
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Fabian Joswig 2022-10-19 13:09:28 +01:00 • committed by GitHub
commit c88ef3dea2
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2 changed files with 29 additions and 12 deletions
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24
pyerrors/obs.py
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@ -267,18 +267,6 @@ class Obs:
self.e_windowsize[e_name] = 0
continue
self.e_rho[e_name] = e_gamma[e_name][:w_max] / e_gamma[e_name][0]
self.e_n_tauint[e_name] = np.cumsum(np.concatenate(([0.5], self.e_rho[e_name][1:])))
# Make sure no entry of tauint is smaller than 0.5
self.e_n_tauint[e_name][self.e_n_tauint[e_name] <= 0.5] = 0.5 + np.finfo(np.float64).eps
# hep-lat/0306017 eq. (42)
self.e_n_dtauint[e_name] = self.e_n_tauint[e_name] * 2 * np.sqrt(np.abs(np.arange(w_max) + 0.5 - self.e_n_tauint[e_name]) / e_N)
self.e_n_dtauint[e_name][0] = 0.0
def _compute_drho(i):
tmp = self.e_rho[e_name][i + 1:w_max] + np.concatenate([self.e_rho[e_name][i - 1::-1], self.e_rho[e_name][1:w_max - 2 * i]]) - 2 * self.e_rho[e_name][i] * self.e_rho[e_name][1:w_max - i]
self.e_drho[e_name][i] = np.sqrt(np.sum(tmp ** 2) / e_N)
gaps = []
for r_name in e_content[e_name]:
if isinstance(self.idl[r_name], range):
@ -291,6 +279,18 @@ class Obs:
else:
gapsize = gaps[0]
self.e_rho[e_name] = e_gamma[e_name][:w_max] / e_gamma[e_name][0]
self.e_n_tauint[e_name] = np.cumsum(np.concatenate(([0.5], self.e_rho[e_name][1:])))
# Make sure no entry of tauint is smaller than 0.5
self.e_n_tauint[e_name][self.e_n_tauint[e_name] <= 0.5] = 0.5 + np.finfo(np.float64).eps
# hep-lat/0306017 eq. (42)
self.e_n_dtauint[e_name] = self.e_n_tauint[e_name] * 2 * np.sqrt(np.abs(np.arange(w_max) / gapsize + 0.5 - self.e_n_tauint[e_name]) / e_N)
self.e_n_dtauint[e_name][0] = 0.0
def _compute_drho(i):
tmp = self.e_rho[e_name][i + 1:w_max] + np.concatenate([self.e_rho[e_name][i - 1::-1], self.e_rho[e_name][1:w_max - 2 * i]]) - 2 * self.e_rho[e_name][i] * self.e_rho[e_name][1:w_max - i]
self.e_drho[e_name][i] = np.sqrt(np.sum(tmp ** 2) / e_N)
_compute_drho(gapsize)
if self.tau_exp[e_name] > 0:
texp = self.tau_exp[e_name]

17
tests/obs_test.py
View file

@ -669,6 +669,23 @@ def test_gamma_method_irregular():
assert np.isclose(tau_a, tau_b)
def test_irregular_gapped_dtauint():
my_idl = list(range(0, 5010, 10))
my_idl.remove(400)
my_idl2 = list(range(0, 501, 1))
my_idl2.remove(40)
my_data = np.random.normal(1.1, 0.2, 500)
obs = pe.Obs([my_data], ["B1"], idl=[my_idl])
obs.gamma_method()
obs2 = pe.Obs([my_data], ["B2"], idl=[my_idl2])
obs2.gamma_method()
assert np.isclose(obs.e_tauint["B1"], obs2.e_tauint["B2"])
assert np.isclose(obs.e_dtauint["B1"], obs2.e_dtauint["B2"])
def test_covariance_is_variance():
value = np.random.normal(5, 10)
dvalue = np.abs(np.random.normal(0, 1))