Resampling-based inference in Python based on data resampling and permutation.
This package was created by Daniel Saxton and is now maintained by Hans Dembinski.
Features
Bootstrap resampling: ordinary or balanced with optional stratification
Extended bootstrap resampling: also varies sample size
Parametric resampling: Gaussian, Poisson, gamma, etc.)
Jackknife estimates of bias and variance of any estimator
Compute bootstrap confidence intervals (percentile or BCa) for any estimator
Permutation-based variants of traditional statistical tests (USP test of independence and others)
Tools for working with empirical distributions (CDF, quantile, etc.)
Example
We bootstrap the uncertainty of the arithmetic mean, an estimator for the expectation. In this case, we know the formula to compute this uncertainty and can compare it to the bootstrap result. More complex examples can be found in the documentation.
from resample.bootstrap import variance
import numpy as np
# data
d = [1, 2, 6, 3, 5]
# this call is all you need
stdev_of_mean = variance(np.mean, d) ** 0.5
print(f"bootstrap {stdev_of_mean:.2f}")
print(f"exact {np.std(d) / len(d) ** 0.5:.2f}")
# bootstrap 0.82
# exact 0.83The amazing thing is that the bootstrap works as well for arbitrarily complex estimators. The bootstrap often provides good results even when the sample size is small.
Installation
You can install with pip.
pip install resample3 maintainers
Metadata
3 maintainers
Release files for resample 1.10.3
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