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make_right_censored_data

class reliability.Other_functions.make_right_censored_data(data, threshold=None, fraction_censored=None, seed=None)

Right censors data based on specified threshold or fraction to censor

Inputs: data - list or array of data threshold - number or None. Default is None. If number this is the point to right censor (right censoring is done if data > threshold). This is known as “singly censored data” as everything is censored at a single point. fraction_censored - number between 0 and 1. Deafult is 0.5. Censoring is done randomly. This is known as “multiply censored data” as there are multiple times at which censoring occurs.

If both threshold and fraction_censored are None, fraction_censored will default to 0.5 to produce multiply censored data. If both threshold and fraction_censored are specified, an error will be raised since these methods conflict.

seed - sets the random seed. This is used for multiply censored data (i.e. when threshold is None). The data is shuffled to remove censoring bias that may be caused by any pre-sorting. Specifying the seed ensures a repeatable random shuffle.

Outputs: failures - array of failure data right_censored - array of right_censored data