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Block Repetition

Source: R/PipeOpTorchBlock.R
mlr_pipeops_nn_block.Rd

Repeat a block n_blocks times by concatenating it with itself (via %>>%).

Naming

For the generated module graph, the IDs of the modules are generated by prefixing the IDs of the n_blocks layers with the ID of the PipeOpTorchBlock and postfixing them with __<layer>.

Parameters

The parameters available for the block itself, as well as

  • n_blocks :: integer(1)
    How often to repeat the block.

Input and Output Channels

The PipeOp sets its input and output channels to those from the block (Graph) it received during construction.

State

The state is the value calculated by the public method $shapes_out().

See also

Other PipeOps: mlr_pipeops_nn_adaptive_avg_pool1d, mlr_pipeops_nn_adaptive_avg_pool2d, mlr_pipeops_nn_adaptive_avg_pool3d, mlr_pipeops_nn_avg_pool1d, mlr_pipeops_nn_avg_pool2d, mlr_pipeops_nn_avg_pool3d, mlr_pipeops_nn_batch_norm1d, mlr_pipeops_nn_batch_norm2d, mlr_pipeops_nn_batch_norm3d, mlr_pipeops_nn_celu, mlr_pipeops_nn_conv1d, mlr_pipeops_nn_conv2d, mlr_pipeops_nn_conv3d, mlr_pipeops_nn_conv_transpose1d, mlr_pipeops_nn_conv_transpose2d, mlr_pipeops_nn_conv_transpose3d, mlr_pipeops_nn_dropout, mlr_pipeops_nn_elu, mlr_pipeops_nn_flatten, mlr_pipeops_nn_gelu, mlr_pipeops_nn_glu, mlr_pipeops_nn_hardshrink, mlr_pipeops_nn_hardsigmoid, mlr_pipeops_nn_hardtanh, mlr_pipeops_nn_head, mlr_pipeops_nn_layer_norm, mlr_pipeops_nn_leaky_relu, mlr_pipeops_nn_linear, mlr_pipeops_nn_log_sigmoid, mlr_pipeops_nn_max_pool1d, mlr_pipeops_nn_max_pool2d, mlr_pipeops_nn_max_pool3d, mlr_pipeops_nn_merge, mlr_pipeops_nn_merge_cat, mlr_pipeops_nn_merge_prod, mlr_pipeops_nn_merge_sum, mlr_pipeops_nn_prelu, mlr_pipeops_nn_relu, mlr_pipeops_nn_relu6, mlr_pipeops_nn_reshape, mlr_pipeops_nn_rrelu, mlr_pipeops_nn_selu, mlr_pipeops_nn_sigmoid, mlr_pipeops_nn_softmax, mlr_pipeops_nn_softplus, mlr_pipeops_nn_softshrink, mlr_pipeops_nn_softsign, mlr_pipeops_nn_squeeze, mlr_pipeops_nn_tanh, mlr_pipeops_nn_tanhshrink, mlr_pipeops_nn_threshold, mlr_pipeops_nn_unsqueeze, mlr_pipeops_torch_ingress, mlr_pipeops_torch_ingress_categ, mlr_pipeops_torch_ingress_ltnsr, mlr_pipeops_torch_ingress_num, mlr_pipeops_torch_loss, mlr_pipeops_torch_model, mlr_pipeops_torch_model_classif, mlr_pipeops_torch_model_regr

Super classes

mlr3pipelines::PipeOp -> mlr3torch::PipeOpTorch -> PipeOpTorchBlock

Active bindings

block

(Graph)
The neural network segment that is repeated by this PipeOp.

Methods

Public methods

Inherited methods

Method new()

Creates a new instance of this R6 class.

Usage

PipeOpTorchBlock$new(block, id = "nn_block", param_vals = list())

Arguments

block

(Graph)
A graph consisting primarily of PipeOpTorch objects that is to be repeated.

id

(character(1))
The id for of the new object.

param_vals

(named list())
Parameter values to be set after construction.

Method clone()

The objects of this class are cloneable with this method.

Usage

PipeOpTorchBlock$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

Examples

block = po("nn_linear") %>>% po("nn_relu")
po_block = po("nn_block", block,
nn_linear.out_features = 10L, n_blocks = 3)
network = po("torch_ingress_num") %>>%
po_block %>>%
po("nn_head") %>>%
po("torch_loss", t_loss("cross_entropy")) %>>%
po("torch_optimizer", t_opt("adam")) %>>%
po("torch_model_classif",
  batch_size = 50,
  epochs = 3)

task = tsk("iris")
network$train(task)
#> $torch_model_classif.output
#> NULL
#>