Attempts to convert various survival prediction formats (e.g., list of
data frames from predict.model_fit with type "survival", matrices)
into a standardized [n_obs, n_eval_times] matrix.
convert_survival_predictions(pred_obj, eval_times, n_obs)A standardized matrix of survival probabilities, or NULL
on failure.
The prediction object.
Numeric vector of evaluation times.
Expected number of observations (rows).