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uddbart 0.2.0

• Added fit_uddbart_vi() for a lightweight Gaussian variational approximation to the unified discrete-time hazard model.
• Added engine = "vi" to uddbart() for a BART-free UDDBART-VI workflow.
• Made the BART package optional. fit_bart_hazard() now falls back to stats::glm(family = binomial) when BART is unavailable.
• Updated dynamic prediction internals to work with BART, glm fallback, and VI hazard backends.
• Added BART-free tests for the glm fallback and UDDBART-VI workflow.

uddbart 0.1.0

• First release of the U-DDBART-IC framework (version 0.1, engineered latent-state features).
• Pipeline: simulate_uddbart_data(), prepare_uddbart_data(), make_followup_grid(), construct_latent_state(), fit_bart_hazard() (logit-link BART), compute_survival_from_hazard(), interval_survival_likelihood(), uddbart(), and predict.uddbart() for the dynamic target pi(t, tau) = 1 - S(t+tau)/S(t).
• Predictive-performance evaluation with IPCW: brier_score() (time-dependent and integrated Brier score), auc_td() (cumulative/dynamic time-dependent AUC) and calibration_table().
• print, summary and plot methods.
• Bundled anonymised CML molecular-monitoring cohort (cml_long, cml_event).
• Functions that take a seed restore the caller’s RNG state on exit.
• An R Journal manuscript and reproducible replication script are provided in paper/ (excluded from the package build).

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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