# C.convert: Converts Cost from DALMKL to SEMKL or SimpleMKL In RMKL: Multiple Kernel Learning for Classification or Regression Problems

## Description

This function estimates an a comparable cost for SEMKL or SimpleMKL from DALMKL.

## Usage

 `1` ```C.convert(K.train, DALMKL.model, C.DALMKL) ```

## Arguments

 `K.train` Gramm matrix of training data `DALMKL.model` DAL MKL model `C.DALMKL` Cost used in DAMKL model

## Value

C cost SEMKL or SimpleMKL

## Examples

 ``` 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23``` ```data(benchmark.data) data.mkl=benchmark.data[[1]] kernels=rep('radial',2) sigma=c(2,1/20) train.samples=sample(1:nrow(data.mkl),floor(0.7*nrow(data.mkl)),replace=FALSE) degree=sapply(1:length(kernels), function(a) ifelse(kernels[a]=='p',2,0)) #Kernels.gen splts the data into a training and test set, and generates the desired kernel matrices. #Here we generate two gaussisan kernel matrices with sigma hyperparameter 2 and 0.05 K=kernels.gen(data=data.mkl[,1:2],train.samples=train.samples,kernels=kernels,sigma=sigma, degree=degree,scale=rep(0,length(kernels))) C=0.05 #Cost parameter for DALMKL K.train=K\$K.train K.test=K\$K.test # parameters set up ytr=data.mkl[train.samples,3] #Converts list of kernel matrices in to an array with is appropriate for C++ code k.train=simplify2array(K.train) k.test=simplify2array(K.test) #Implement DALMKL with the hinge loss function spicy_svmb1n=SpicyMKL(K=k.train,y=ytr, loss='hinge',C=C) #Convert cost from DALMKL to be more compatible withSimpleMKL C.SimpleMKL=C.convert(K.train,spicy_svmb1n,C) ```

RMKL documentation built on May 2, 2019, 7:55 a.m.