CPHazard: Hazard Change Point Models for Different Lifetime Distributions
Estimates the parameters of models with a single change-point in
the hazard rate for time-to-event data. Supported models include the
exponential (Gijbels & Gürler (2003)
<doi:10.1023/B:LIDA.0000012424.71723.9d>, Matthews & Farewell (1982)
<doi:10.2307/2530460>), Exponential-Lindley (Joshi & Rattihalli (2020)
<doi:10.1007/978-981-15-5414-8_29>), Lindley (Joshi, Jose, & Bhati (2016)
<doi:10.1080/03610918.2015.1096381>), log-logistic (Nadar, Upadhyay, &
Joshi (2025) <doi:10.3390/math13091457>), and Weibull (Williams & Kim
(2013) <doi:10.1080/03610926.2011.600505>) hazard change-point models.
Provides functions for generating random variates and evaluating the
probability density function (PDF) and the cumulative distribution
function (CDF) of the fitted change-point models. Includes Kaplan-Meier
and Nelson-Aalen diagnostic plots, together with goodness-of-fit measures
such as the Akaike Information Criterion (AIC), the Bayesian Information
Criterion (BIC), distance metrics such as the L1-norm and L2-norm, and
the Kolmogorov-Smirnov (K-S) statistic for model evaluation.
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