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message: 'To cite package "CPHazard" in publications use:'
type: software
license: MIT
title: 'CPHazard: Hazard Change Point Models for Different Lifetime Distributions'
version: 0.1.0
doi: 10.32614/CRAN.package.CPHazard
abstract: 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) <https://doi.org/10.1023/B:LIDA.0000012424.71723.9d>, Matthews & Farewell
  (1982) <https://doi.org/10.2307/2530460>), Exponential-Lindley (Joshi & Rattihalli
  (2020) <https://doi.org/10.1007/978-981-15-5414-8_29>), Lindley (Joshi, Jose, &
  Bhati (2016) <https://doi.org/10.1080/03610918.2015.1096381>), log-logistic (Nadar,
  Upadhyay, & Joshi (2025) <https://doi.org/10.3390/math13091457>), and Weibull (Williams
  & Kim (2013) <https://doi.org/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.
authors:
- family-names: Upadhyay
  given-names: Vasudha
  email: vasudhyay@gmail.com
- family-names: Joshi
  given-names: Dr. Savitri
  email: savitri.joshi@iiita.ac.in
- family-names: Aithal
  given-names: Keerthan
  email: aithalkeerthan@gmail.com
repository: https://upadhvasu.r-universe.dev
commit: 7c09d8f2ea752701cf55d9851dfe92f5e63a14f4
date-released: '2026-09-27'
contact:
- family-names: Upadhyay
  given-names: Vasudha
  email: vasudhyay@gmail.com