Breslow partial log-likelihood (negative, normalized by n). — cox_partial_log

Breslow partial log-likelihood (negative, normalized by n).

Usage

cox_partial_log_likelihood(times, events, predictions)

Arguments

times: Survival times (length n).
events: Event indicators (0 or 1; length n).
predictions: Risk scores; higher = higher risk = shorter survival.

Value

A numeric scalar: the negative Breslow partial log-likelihood for the Cox proportional-hazards model, normalized by the sample size n. Lower values indicate a better fit.