Computes and adds an exponential CDF-based column `Pexp` to the anomaly dataframe,
representing the probability \(P(t \le T)\) for each cluster's inter-cluster gap \(t_{\rm lag}\).
Usage
add_Pexp(proc, updated_stat)
Arguments
- proc
A dataframe from the anomaly pipeline containing `t_lag`.
- updated_stat
A list containing `stats$lambda_c`, typically returned from `update_stat()` or `update_logic()`.
Value
The input dataframe with an added `Pexp` column.
Details
This is calculated as pexp(t_lag, lambda_c) where lambda_c is the cluster rate
estimated from updated_stat.