predict.poisson: Prediction Method for an Object with S3 Class '"poisson"'

In picasso: Sparse Learning with Convex and Concave Penalties

Prediction Method for an Object with S3 Class "poisson"

Description

Predict responses for new data using fitted models.

Usage

## S3 method for class 'poisson'
predict(object, newdata, lambda.idx = c(1:3), p.pred.idx = c(1:5), ...)

Arguments

object	An object with S3 class "poisson".
newdata	Optional matrix/data frame used for prediction. If omitted, the training design matrix from fitting is used.
lambda.idx	Indices of regularization parameters along the solution path used for prediction. The default is c(1:3).
p.pred.idx	Optional row indices to subset returned predictions when explicitly set to a value different from the default c(1:5).
...	Arguments to be passed to methods.

Details

predict.poisson returns predicted Poisson means for newdata using fitted coefficients from object:

\hat{p} = e^{\hat{\beta}_0 + X_{new} \hat{\beta}}.

Value

Numeric matrix of predicted Poisson means. Rows correspond to observations in newdata; columns correspond to lambda.idx.

Author(s)

Jason Ge, Xingguo Li, Haoming Jiang, Mengdi Wang, Tong Zhang, Han Liu and Tuo Zhao
Maintainer: Tuo Zhao <[e-mail]>

See Also

picasso and picasso-package.

picasso documentation built on March 12, 2026, 5:06 p.m.