Specification of a relationship between response and predictor variables and a model to define a relationship between them.
ModelSpecification(...)# S3 method for default
ModelSpecification(
input,
model,
control = MachineShop::settings("control"),
metrics = NULL,
cutoff = MachineShop::settings("cutoff"),
stat = MachineShop::settings("stat.TrainingParams"),
...
)
# S3 method for formula
ModelSpecification(formula, data, model, ...)
# S3 method for matrix
ModelSpecification(x, y, model, ...)
# S3 method for ModelFrame
ModelSpecification(input, model, ...)
# S3 method for recipe
ModelSpecification(input, model, ...)
ModelSpecification
class object.
arguments passed from the generic function to its methods. The
first argument of each ModelSpecification
method is positional and,
as such, must be given first in calls to them.
input object defining and containing the model predictor and response variables.
model function, function name, or object; or another object that can be coerced to a model.
control function, function name, or object
defining the resampling method to be employed. If NULL
or if
the model specification contains any SelectedInput
or
SelectedModel
objects, then object-specific control structures and
training parameters are used for selection and tuning, as usual, and
objects are trained sequentially with nested resampling. Otherwise,
tuning of input and model objects is performed simultaneously over a global grid of their parameter values, and
the specified control
method and training parameters below
override those of any included TunedInput
or TunedModel
.
metric function, function name, or vector of these with which to calculate performance. If not specified, default metrics defined in the performance functions are used. Model selection is based on the first calculated metric.
argument passed to the metrics
functions.
function or character string naming a function to compute a summary statistic on resampled metric values for model tuning.
formula defining the model predictor and response variables and a data frame containing them.
matrix and object containing predictor and response variables.
fit
, resample
,
set_monitor
, set_optim
# \donttest{
## Requires prior installation of suggested package gbm to run
modelspec <- ModelSpecification(
sale_amount ~ ., data = ICHomes, model = GBMModel
)
fit(modelspec)
# }
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