Man pages for stagelife
Random Number Generation and Inferences for Two-Stage Life-Testing Data

check_levelValidate a confidence level is a single number strictly...
check_positiveValidate a numeric parameter vector is strictly positive and...
coef.slt_fitExtract coefficients from a fitted two-stage life testing...
confint.slt_fitAsymptotic (Wald) confidence intervals for a fitted two-stage...
fit_sltFit a two-stage life testing model by maximum likelihood
get_familyLook up a baseline lifetime distribution object
is_failed_replicateIdentify a failed Monte Carlo / bootstrap replicate
loglik_sltTwo-stage cumulative-exposure log-likelihood
logLik.slt_fitExtract the log-likelihood of a fitted two-stage life testing...
neg_loglik_sltCase-aware negative log-likelihood (optimiser objective)
plot_cdfFitted vs empirical CDF plot
plot_ppP-P (probability-probability) plot
plot_qqQ-Q (quantile-quantile) plot
plot.slt_fitDiagnostic plots for a fitted two-stage life-testing model
plot_survivalFitted vs empirical survival curve
print.slt_fitPrint a fitted two-stage life testing model
print.summary.slt_fitPrint a summary of a fitted two-stage life testing model
psltPopulation CDF/PDF/quantile function of a two-stage...
round_dfRound a numeric vector/data.frame column set, silently...
rsltSimulate data from the two-stage life-testing model
safe_vcovGuarded matrix inverse for variance-covariance matrices
slt_bobotas_kateri_2015Bobotas & Kateri (2015) simple step-stress data
slt_bootstrap_ciBootstrap confidence intervals for a fitted two-stage life...
slt_casesIdentifiable parameter-sharing cases for two-stage estimation
slt_distBaseline density, distribution and quantile functions for a...
slt_equiv_ageEquivalent age under the elevated stress
slt_expand_paramsExpand a case-specific parameter vector into (theta0, theta1)
slt_familiesAvailable baseline lifetime distributions
slt_gof_ksKolmogorov-Smirnov goodness-of-fit test with...
slt_han_kundu_2014Han & Kundu (2014) simple step-stress data
slt_lrtLikelihood-ratio test between nested parameter-sharing cases
slt_model_comparisonCompare several fitted models by information criteria
slt_prob_stage1Probability of observing at least one stage-1 failure (Laumen...
slt_reduce_paramsReduce full (theta0, theta1) parameters to a case's free...
slt_taup-th quantile of the baseline-stage distribution
slt_wang_fei_2003Wang & Fei (2003) simple step-stress data
slt_zhu_2010Zhu (2010) simple step-stress data
stagelife-packagestagelife: Random Number Generation and Inferences for...
summary.slt_fitSummarise a fitted two-stage life testing model
vcov.slt_fitVariance-covariance matrix of a fitted two-stage life testing...
stagelife documentation built on Nov. 3, 2026, 5:08 p.m.