kfa-class function

Class "kfa"

The class of the object returned by the Kernel Feature Analysis kfa function class

Objects from the Class

Objects can be created by calls of the form new("kfa", ...) or by calling the kfa method. The objects contain the features along with the alpha values.

Slots

• alpha:: Object of class "matrix" containing the alpha values
• alphaindex:: Object of class "vector" containing the indexes of the selected feature
• kernelf:: Object of class "kfunction" containing the kernel function used
• xmatrix:: Object of class "matrix" containing the selected features
• kcall:: Object of class "call" containing the kfa function call
• terms:: Object of class "ANY" containing the formula terms

Methods

• alpha: signature(object = "kfa"): returns the alpha values
• alphaindex: signature(object = "kfa"): returns the index of the selected features
• kcall: signature(object = "kfa"): returns the function call
• kernelf: signature(object = "kfa"): returns the kernel function used
• predict: signature(object = "kfa"): used to embed more data points to the feature base
• xmatrix: signature(object = "kfa"): returns the selected features.

Author(s)

Alexandros Karatzoglou

alexandros.karatzoglou@ci.tuwien.ac.at

See Also

kfa, kpca-class

Examples

data(promotergene)
f <- kfa(~.,data=promotergene)