SALib.test_functions.Sobol_G module

SALib.test_functions.Sobol_G.evaluate(values, a=None, delta=None, alpha=None)

Modified Sobol G-function.

Reverts to original Sobol G-function if delta and alpha are not given.

[1]

Saltelli, A., Annoni, P., Azzini, I., Campolongo, F., Ratto, M., Tarantola, S., 2010. Variance based sensitivity analysis of model output. Design and estimator for the total sensitivity index. Computer Physics Communications 181, 259–270. https://doi.org/10.1016/j.cpc.2009.09.018

Parameters:

• values (numpy.ndarray) – input variables

• a (numpy.ndarray) – parameter values

• delta (numpy.ndarray) – shift parameters

• alpha (numpy.ndarray) – curvature parameters

Returns:

Y

Return type:

Result of G-function

SALib.test_functions.Sobol_G.sensitivity_index(a, alpha=None)

SALib.test_functions.Sobol_G.total_sensitivity_index(a, alpha=None)