`obj_function.Rd`

Returns the elastic net objective function value.

`obj_function(y, mu, weights, family, lambda, alpha, coefficients, vp)`

- y
Quantitative response variable.

- mu
Model's predictions for

`y`

.- weights
Observation weights.

- family
A description of the error distribution and link function to be used in the model. This is the result of a call to a family function.

- lambda
A single value for the

`lambda`

hyperparameter.- alpha
The elasticnet mixing parameter, with \(0 \le \alpha \le 1\).

- coefficients
The model's coefficients (excluding intercept).

- vp
Penalty factors for each of the coefficients.