Issues

• conditional_gaps: invert H with Newton's steps past the quantile's limit (12–15 evaluations a draw now, 3–4 possible), and MixtureModel.Hf costs ~100 µs a call

  derrynknife/SurPyval#857 · Filter by author derrynknife opened on Oct 10, 2026

• Units on models: a time (and level) unit on fits, covariate units checked at evaluation, and rescaling a model's time

  derrynknife/SurPyval#845 · Filter by author derrynknife opened on Oct 10, 2026

• Helpers to fit SurPyval models with PyMC (Bayesian fitting)

  derrynknife/SurPyval#840 · Filter by author derrynknife opened on Oct 10, 2026

• Degradation models: the distribution of the degradation level at time t, and drawing a path

  derrynknife/SurPyval#836 · Filter by author derrynknife opened on Oct 9, 2026

• Fixed-probability fits (Bernoulli, Binomial, FixedEventProbability) carry no covariance, so p's uncertainty can't be propagated

  derrynknife/SurPyval#835 · Filter by author derrynknife opened on Oct 9, 2026

• ParametricCompetingRisks: df, mean, qf and covariance of the overall lifetime

  derrynknife/SurPyval#834 · Filter by author derrynknife opened on Oct 9, 2026

• RenewalModel: draw the next failure time given a unit's state (next_failure_qf / a public step sampler)

  derrynknife/SurPyval#833 · Filter by author derrynknife opened on Oct 9, 2026

• with_params on every fitted model with a covariance (regressions, Royston–Parmar, renewal, recurrence, degradation, competing risks), and at(Z) on regressions

  derrynknife/SurPyval#832 · Filter by author derrynknife opened on Oct 9, 2026

• with_params can't set lfp_p, f0 or gamma; bootstrap refits are private

  derrynknife/SurPyval#831 · Filter by author derrynknife opened on Oct 9, 2026

• Parametric.covariance(): rows are unnamed, parameter_names doesn't match it, and an offset fit leaves gamma out

  derrynknife/SurPyval#830 · Filter by author derrynknife opened on Oct 9, 2026

• Shared frailty and correlated series for repairable systems

  derrynknife/SurPyval#810 · Filter by author derrynknife opened on Oct 9, 2026

• Bayesian inference (scope decision)

  derrynknife/SurPyval#811 · Filter by author derrynknife opened on Oct 9, 2026

• Multivariate copulas for more than two lifetimes

  derrynknife/SurPyval#809 · Filter by author derrynknife opened on Oct 9, 2026

• Multi-state models (illness-death, progressive)

  derrynknife/SurPyval#808 · Filter by author derrynknife opened on Oct 9, 2026

• Recurrent events with competing failure modes, parametric (cause-specific NHPP)

  derrynknife/SurPyval#806 · Filter by author derrynknife opened on Oct 9, 2026

• Recurrent events with competing failure modes and covariates

  derrynknife/SurPyval#807 · Filter by author derrynknife opened on Oct 9, 2026

• Recurrent events with covariates, semi-parametric (Andersen–Gill / PWP / mean model)

  derrynknife/SurPyval#805 · Filter by author derrynknife opened on Oct 9, 2026

• Parametric competing-risks regression

  derrynknife/SurPyval#804 · Filter by author derrynknife opened on Oct 9, 2026

• Crow Extended projection: check against MIL-HDBK-189C §6 itself

  derrynknife/SurPyval#800 · Filter by author derrynknife opened on Oct 9, 2026