View source: R/ols-stepaic-forward-regression.R
ols_step_forward_sbc | R Documentation |
Build regression model from a set of candidate predictor variables by entering predictors based on schwarz bayesian criterion, in a stepwise manner until there is no variable left to enter any more.
ols_step_forward_sbc(model, ...)
## Default S3 method:
ols_step_forward_sbc(
model,
include = NULL,
exclude = NULL,
progress = FALSE,
details = FALSE,
...
)
## S3 method for class 'ols_step_forward_sbc'
plot(x, print_plot = TRUE, details = TRUE, digits = 3, ...)
model |
An object of class |
... |
Other arguments. |
include |
Character or numeric vector; variables to be included in selection process. |
exclude |
Character or numeric vector; variables to be excluded from selection process. |
progress |
Logical; if |
details |
Logical; if |
x |
An object of class |
print_plot |
logical; if |
digits |
Number of decimal places to display. |
List containing the following components:
model |
final model; an object of class |
metrics |
selection metrics |
others |
list; info used for plotting and printing |
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.
Other forward selection procedures:
ols_step_forward_adj_r2()
,
ols_step_forward_aic()
,
ols_step_forward_p()
,
ols_step_forward_r2()
,
ols_step_forward_sbic()
# stepwise forward regression
model <- lm(y ~ ., data = surgical)
ols_step_forward_sbc(model)
# stepwise forward regression plot
k <- ols_step_forward_sbc(model)
plot(k)
# selection metrics
k$metrics
# extract final model
k$model
# include or exclude variables
# force variable to be included in selection process
ols_step_forward_sbc(model, include = c("age"))
# use index of variable instead of name
ols_step_forward_sbc(model, include = c(5))
# force variable to be excluded from selection process
ols_step_forward_sbc(model, exclude = c("liver_test"))
# use index of variable instead of name
ols_step_forward_sbc(model, exclude = c(4))
# include & exclude variables in the selection process
ols_step_forward_sbc(model, include = c("age"), exclude = c("liver_test"))
# use index of variable instead of name
ols_step_forward_sbc(model, include = c(5), exclude = c(4))
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