data::Transformer< T, D > Class Template Reference

Public Member Functions
	Transformer (const D &dataset)
	Construct and fit transformers for both inputs and labels. More...
D	TransInp (const D &dataset)
	Transform only the inputs of a dataset. More...
D	TransLab (const D &dataset)
	Transform only the labels of a dataset. More...
D	Trans (const D &dataset)
	Transform both inputs and labels of a dataset. More...
D	InvTransInp (const D &dataset)
	Inverse transform both inputs. More...
D	InvTransLab (const D &dataset)
	Inverse transform only the labels. More...
D	InvTrans (const D &dataset)
	Inverse transform both inputs and labels. More...

Detailed Description

template<class T = mlpack::data::StandardScaler, class D = data::Dataset<arma::Row<DTYPE>>>
class data::Transformer< T, D >

Definition at line 22 of file data.h.

Constructor & Destructor Documentation

Transformer()

template<class T = mlpack::data::StandardScaler, class D = data::Dataset<arma::Row<DTYPE>>>

data::Transformer< T, D >::Transformer ( const D &  dataset )

inline

Construct and fit transformers for both inputs and labels.

Parameters

data	Dataset to fit the transformers on.

Definition at line 32 of file data.h.

  {
    inp_.Fit(arma::conv_to<arma::mat>::from(dataset.inputs_));
    if constexpr (std::is_same<D, data::Dataset<arma::Row<DTYPE>>>::value ||
        std::is_same<D, data::Dataset<arma::Mat<DTYPE>>>::value ||
        std::is_same<D, data::oml::Dataset<DTYPE>>::value )
      lab_.Fit(arma::conv_to<arma::rowvec>::from(dataset.labels_));
  };

Member Function Documentation

InvTrans()

template<class T = mlpack::data::StandardScaler, class D = data::Dataset<arma::Row<DTYPE>>>

D data::Transformer< T, D >::InvTrans ( const D &  dataset )

inline

Inverse transform both inputs and labels.

Parameters

data	Dataset to inverse transform.

Returns

Original-scale dataset.

Definition at line 121 of file data.h.

  {
    D tdataset = InvTransInp(dataset);
    if constexpr (std::is_same<D, data::Dataset<arma::Row<DTYPE>>>::value ||
        std::is_same<D, data::Dataset<arma::Mat<DTYPE>>>::value ||
        std::is_same<D, data::oml::Dataset<DTYPE>>::value )
      tdataset = InvTransLab(tdataset);
    return tdataset;
  };

References data::Transformer< T, D >::InvTransInp(), and data::Transformer< T, D >::InvTransLab().

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InvTransInp()

template<class T = mlpack::data::StandardScaler, class D = data::Dataset<arma::Row<DTYPE>>>

D data::Transformer< T, D >::InvTransInp ( const D &  dataset )

inline

Inverse transform both inputs.

Parameters

data	Dataset to inverse transform.

Returns

Original-scale dataset.

Definition at line 97 of file data.h.

  {
    D tdataset = dataset;
    inp_.InverseTransform( dataset.inputs_, tdataset.inputs_);
    return tdataset;
  };

Referenced by data::Transformer< T, D >::InvTrans().

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InvTransLab()

template<class T = mlpack::data::StandardScaler, class D = data::Dataset<arma::Row<DTYPE>>>

D data::Transformer< T, D >::InvTransLab ( const D &  dataset )

inline

Inverse transform only the labels.

Parameters

data	Dataset to inverse transform.

Returns

Dataset with original-scale labels.

Definition at line 109 of file data.h.

  {
    D tdataset = dataset;
    lab_.InverseTransform( dataset.labels_, tdataset.labels_);
    return tdataset;
  };

Referenced by data::Transformer< T, D >::InvTrans().

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Trans()

template<class T = mlpack::data::StandardScaler, class D = data::Dataset<arma::Row<DTYPE>>>

D data::Transformer< T, D >::Trans ( const D &  dataset )

inline

Transform both inputs and labels of a dataset.

Parameters

data	Dataset to transform.

Returns

Fully transformed dataset.

Definition at line 81 of file data.h.

  {
    D tdataset = TransInp(dataset);
    if constexpr (std::is_same<D, data::Dataset<arma::Row<DTYPE>>>::value ||
        std::is_same<D, data::Dataset<arma::Mat<DTYPE>>>::value ||
        std::is_same<D, data::oml::Dataset<DTYPE>>::value )
      tdataset = TransLab(tdataset);
    return tdataset;
  };

References data::Transformer< T, D >::TransInp(), and data::Transformer< T, D >::TransLab().

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TransInp()

template<class T = mlpack::data::StandardScaler, class D = data::Dataset<arma::Row<DTYPE>>>

D data::Transformer< T, D >::TransInp ( const D &  dataset )

inline

Transform only the inputs of a dataset.

Parameters

data	Dataset to transform.

Returns

Transformed dataset (inputs only).

Definition at line 46 of file data.h.

  {
    D tdataset = dataset;
    inp_.Transform( dataset.inputs_, tdataset.inputs_);
    return tdataset;
  };

Referenced by data::Transformer< T, D >::Trans().

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TransLab()

template<class T = mlpack::data::StandardScaler, class D = data::Dataset<arma::Row<DTYPE>>>

D data::Transformer< T, D >::TransLab ( const D &  dataset )

inline

Transform only the labels of a dataset.

Parameters

data	Dataset to transform.

Returns

Transformed dataset (labels only).

Definition at line 58 of file data.h.

  {
    if constexpr (std::is_same<D, data::Dataset<arma::Row<DTYPE>>>::value ||
        std::is_same<D, data::Dataset<arma::Mat<DTYPE>>>::value ||
        std::is_same<D, data::oml::Dataset<DTYPE>>::value )
    {
      D tdataset = dataset;
      lab_.Transform( dataset.labels_, tdataset.labels_);
      return tdataset; 
    }
    else
    {
      WARNING("Unfortunately I will not let you transform the labels if you \
          donot have a regression dataset!");
      return dataset; 
    }
  };

Referenced by data::Transformer< T, D >::Trans().

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The documentation for this class was generated from the following file:

• data.h