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How to use the reliability.Fitters.Fit_Lognormal_2P.logf function in reliability

To help you get started, we’ve selected a few reliability examples, based on popular ways it is used in public projects.

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MatthewReid854 / reliability / reliability / Fitters.py View on Github

def LL(params, T_f, T_rc):  # log likelihood function (2 parameter lognormal)
        LL_f = 0
        LL_rc = 0
        LL_f += Fit_Lognormal_2P.logf(T_f, params[0], params[1]).sum()  # failure times
        LL_rc += Fit_Lognormal_2P.logR(T_rc, params[0], params[1]).sum()  # right censored times
        return -(LL_f + LL_rc)

MatthewReid854 / reliability / reliability / Fitters.py View on Github

def LL_fs(params, T_f, T_rc, force_sigma):  # log likelihood function (2 parameter lognormal) FORCED SIGMA
        LL_f = 0
        LL_rc = 0
        LL_f += Fit_Lognormal_2P.logf(T_f, params[0], force_sigma).sum()  # failure times
        LL_rc += Fit_Lognormal_2P.logR(T_rc, params[0], force_sigma).sum()  # right censored times
        return -(LL_f + LL_rc)