openquake.hme.utils.stats

This module provides statistical functions that are not specific to any set of tests.

Functions

estimate_negative_binom_parameters(samples)
geom_mean(*vals)	Calculates the geometric mean of either a sequence of numbers (returning a scalar) or the element-wise geometric mean of multiple sequences of numbers of equal length (i.e., the geometric mean of the i-th value across all sequences), returning an array of the same length as the input sequences.
jensen_shannon_distance(p, q)
jensen_shannon_divergence(p, q)
kullback_leibler_divergence(p, q)	The Kullback-Leibler Divergence is a measure of the information loss in moving from a distribution P to a second distribution Q that may be a model or approximation.
negative_binomial_distribution(num_events, ...)	Returns the negative binomial probability for observing
poisson_likelihood(num_events, rate[, ...])	Returns the Poisson likelihood of observing num_events in a time_interval given the rate of those events in the units of the time interval (i.e., if the time_interval is in years, the rate is the annual occurrence rate).
poisson_likelihood_vect(num_events, rate[, ...])
poisson_likelihood_zero_rate(num_events[, ...])
poisson_log_likelihood(num_events, rate[, ...])
poisson_log_likelihood_vect(num_events, rate)
sample_event_times_in_interval(...[, t0, ...])	Returns the times of events
sample_event_times_in_interval_array(...[, ...])	Returns the times of events from an array of event rates.
sample_num_events_in_interval(...[, rand_seed])	Returns the number of events in an interval, sampled from the Poisson distribution for the occurrence rate and interval length.
sample_num_events_in_interval_array(...[, ...])	Returns the times of events from an array of event rates.
weighted_geom_mean(*vals[, weights])	Calculates the weighted geometric mean of either a sequence of numbers (returning a scalar) or the element-wise weighted geometric mean of multiple sequences of numbers of equal length (i.e., the weighted geometric mean of the i-th value across all sequences), returning an array of the same length as the input sequences.