#include <GTransform.h>

Inheritance diagram for GClasses::GImputeMissingVals:

Public Member Functions
	GImputeMissingVals ()
	General-purpose constructor. More...

	GImputeMissingVals (const GDomNode *pNode, GLearnerLoader &ll)
	Deserializing constructor. More...

virtual	~GImputeMissingVals ()

virtual GDomNode *	serialize (GDom *pDoc) const
	Marshal this object into a DOM, which can then be converted to a variety of serial formats. More...

void	setCollaborativeFilter (GCollaborativeFilter *pCF)
	Sets the collaborative filter used to impute missing values. Takes ownership of pCF. If no collaborative filter is set, the default is to use matrix factorization with some typical parameters. More...

void	setLabels (const GMatrix *pLabels)
	Specify a label matrix that should be appended with the training data. This object will not delete pLabels. It is expected that pLabels will remain valid at least until after train is next called. More...

virtual void	transform (const GVec &in, GVec &out)
	See the comment for GIncrementalTransform::transform. More...

virtual GMatrix *	transformBatch (const GMatrix &in)
	Unlike most other transforms, this one assumes that the matrix passed to this method is the same that was used to train it. (This assumption is necessary in order to utilize the additional label information that may be available at training time, which can be important for imputation.) More...

virtual void	untransform (const GVec &in, GVec &out)
	See the comment for GIncrementalTransform::untransform. More...

virtual void	untransformToDistribution (const GVec &in, GPrediction *pOut)
	See the comment for GIncrementalTransform::untransformToDistribution. More...

Public Member Functions inherited from GClasses::GIncrementalTransform
	GIncrementalTransform ()

	GIncrementalTransform (const GDomNode *pNode)

virtual	~GIncrementalTransform ()

const GRelation &	after () const
	Returns a relation object describing the data after it is transformed. More...

const GRelation &	before () const
	Returns a relation object describing the data before it is transformed. More...

GVec &	innerBuf ()
	Returns a buffer of sufficient size to store an inner (transformed) vector. The caller should not to delete the buffer. The same buffer will be returned each time. More...

virtual GMatrix *	reduce (const GMatrix &in)
	This calls train, then calls transformBatch, and returns the result. More...

void	setAfter (GRelation *pRel)
	Sets the after relation. Takes ownership of pRel. More...

void	setBefore (GRelation *pRel)
	Sets the before relation. Takes ownership of pRel. More...

void	train (const GMatrix &data)
	Trains the transform on the data in pData. (This method may be a no-op for transformations that always behave in the same manner.) More...

void	train (const GRelation &pRelation)
	"Trains" the transform without any data. More...

virtual std::unique_ptr< GMatrix >	untransformBatch (const GMatrix &in)
	This assumes train was previously called, and untransforms all the rows in pIn and returns the results. More...

Public Member Functions inherited from GClasses::GTransform
	GTransform ()

	GTransform (const GDomNode *pNode)

virtual	~GTransform ()

Protected Member Functions
virtual GRelation *	trainInner (const GMatrix &data)
	See the comment for GIncrementalTransform::train. More...

virtual GRelation *	trainInner (const GRelation &relation)
	Throws an exception (because this transform cannot be trained without data) More...

Protected Member Functions inherited from GClasses::GIncrementalTransform
virtual GDomNode *	baseDomNode (GDom pDoc, const char szClassName) const
	Child classes should use this in their implementation of serialize. More...

Protected Attributes
GMatrix *	m_pBatch

GCollaborativeFilter *	m_pCF

const GMatrix *	m_pLabels

GNominalToCat *	m_pNTC

Additional Inherited Members
Static Public Member Functions inherited from GClasses::GIncrementalTransform
static void	test ()
	Performs unit tests for this class. Throws an exception if there is a failure. More...

Constructor & Destructor Documentation

GClasses::GImputeMissingVals::GImputeMissingVals ( )

General-purpose constructor.

GClasses::GImputeMissingVals::GImputeMissingVals	(	const GDomNode *	pNode,
		GLearnerLoader &	ll
	)

Deserializing constructor.

virtual GClasses::GImputeMissingVals::~GImputeMissingVals ( )

virtual

Member Function Documentation

virtual GDomNode* GClasses::GImputeMissingVals::serialize ( GDom * pDoc ) const

virtual

Marshal this object into a DOM, which can then be converted to a variety of serial formats.

Implements GClasses::GIncrementalTransform.

void GClasses::GImputeMissingVals::setCollaborativeFilter ( GCollaborativeFilter * pCF )

Sets the collaborative filter used to impute missing values. Takes ownership of pCF. If no collaborative filter is set, the default is to use matrix factorization with some typical parameters.

void GClasses::GImputeMissingVals::setLabels ( const GMatrix * pLabels )

Specify a label matrix that should be appended with the training data. This object will not delete pLabels. It is expected that pLabels will remain valid at least until after train is next called.

virtual GRelation* GClasses::GImputeMissingVals::trainInner ( const GMatrix & data )

protectedvirtual

See the comment for GIncrementalTransform::train.

Implements GClasses::GIncrementalTransform.

virtual GRelation* GClasses::GImputeMissingVals::trainInner ( const GRelation & relation )

protectedvirtual

Throws an exception (because this transform cannot be trained without data)

Implements GClasses::GIncrementalTransform.

virtual void GClasses::GImputeMissingVals::transform	(	const GVec &	in,
		GVec &	out
	)

virtual

See the comment for GIncrementalTransform::transform.

Implements GClasses::GIncrementalTransform.

virtual GMatrix* GClasses::GImputeMissingVals::transformBatch ( const GMatrix & in )

virtual

Unlike most other transforms, this one assumes that the matrix passed to this method is the same that was used to train it. (This assumption is necessary in order to utilize the additional label information that may be available at training time, which can be important for imputation.)

Reimplemented from GClasses::GIncrementalTransform.