Torch Entry Point for Categorical Features

Ingress PipeOp that represents a categorical (factor(), ordered() and logical()) entry point to a torch network.

Parameters

• select :: logical(1)
  Whether PipeOp should selected the supported feature types. Otherwise it will err on receiving tasks with unsupported feature types.

Internals

Uses batchgetter_categ().

Input and Output Channels

One input channel called "input" and one output channel called "output". For an explanation see PipeOpTorch.

State

The state is set to the input shape.

See also

Other Graph Network: ModelDescriptor(), TorchIngressToken(), mlr_learners_torch_model, mlr_pipeops_module, mlr_pipeops_torch, mlr_pipeops_torch_ingress, mlr_pipeops_torch_ingress_ltnsr, mlr_pipeops_torch_ingress_num, model_descriptor_to_learner(), model_descriptor_to_module(), model_descriptor_union(), nn_graph()

Super classes

mlr3pipelines::PipeOp -> PipeOpTorchIngress -> PipeOpTorchIngressCategorical

Methods

Public methods

• PipeOpTorchIngressCategorical$new()

• PipeOpTorchIngressCategorical$clone()

Inherited methods

• mlr3pipelines::PipeOp$help()
• mlr3pipelines::PipeOp$predict()
• mlr3pipelines::PipeOp$print()
• mlr3pipelines::PipeOp$train()

---

PipeOpTorchIngressCategorical$new()

Creates a new instance of this R6 class.

Usage

PipeOpTorchIngressCategorical$new(
  id = "torch_ingress_categ",
  param_vals = list()
)

Arguments

id

(character(1))
Identifier of the resulting object.

param_vals

(list())
List of hyperparameter settings, overwriting the hyperparameter settings that would otherwise be set during construction.

---

PipeOpTorchIngressCategorical$clone()

The objects of this class are cloneable with this method.

Usage

PipeOpTorchIngressCategorical$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

Examples

graph = po("select", selector = selector_type("factor")) %>>%
  po("torch_ingress_categ")
task = tsk("german_credit")
# The output is a model descriptor
md = graph$train(task)[[1L]]
ingress = md$ingress[[1L]]
ingress$batchgetter(task$data(1, ingress$features(task)), "cpu")
#> torch_tensor
#>  5  5  1  2  3  1  3  1  3  1  4  5  1  2
#> [ CPULongType{1,14} ]