Find the optimal lambda via LOOCV
Arguments
- ec
Matrix of external control data (attributes by columns).
- long_term_col_name
Character vector of long-term outcome column names.
- lambda.min
Numeric. Minimum penalty parameter.
- lambda.max
Numeric. Maximum penalty parameter.
- nlambda
Integer. Number of lambda values to evaluate.
- pb
A progress bar object or
NULL.
