Resampling

bootstrap()

Generate n bootstrap replicates.

crossv_mc() crossv_kfold()

Generate cross-validated test-training pairs

permute() permute_()

Generate n permutation replicates.

resample()

A "lazy" resample.

resample_bootstrap()

Generate a boostrap replicate

resample_partition()

Generate an exclusive partitioning of a data frame

resample_permutation()

Create a resampled permutation of a data frame

Prediction grids

add_predictions() spread_predictions() gather_predictions()

Add predictions to a data frame

data_grid()

Generate a data grid.

typical()

Find the typical value

seq_range()

Generate a sequence over the range of a vector

Residuals and quality metrics

add_residuals() spread_residuals() gather_residuals()

Add residuals to a data frame

mse() rmse() mae() rsquare() qae() mape() rsae()

Compute model quality for a given dataset

Formulas

fit_with()

Fit a list of formulas

add_predictors()

Add predictors to a formula

formulas() formulae()

Create a list of formulas

Data

sim1 sim2 sim3 sim4

Simple simulated datasets

heights

Height and income data.

Helpers

geom_ref_line()

Add a reference line (ggplot2).

model_matrix()

Construct a design matrix

na.warn()

Handle missing values with a warning