hybridFit: survivalsvm (hybrid approach)

Description

fits survivalsvm model based on hybrid approach method for survival support vector ananlysis.

Usage

hybridFit(X, Y, delta, meth_par = c(1, 1), kernel_type = "lin_kernel",
  kernel_pars = NA, bin_cat = integer(0), makediff = makediff3,
  opt_alg = "quadprog", sgf_sv = 5, sigf = 7, maxiter = 40,
  margin = 0.05, bound = 10, eig.tol = 1e-06, conv.tol = 1e-07,
  posd.tol = 1e-08)

Value

[Hybrid(1)] Object of class Hybrid containing elements:

`Alpha`	Solution of the quadratic optimization problem,
`Xtrain`	Matrix of training points,
`DifMat`	Matrix used to maked differences between neighbor points,
`Kernel`	Kernel matrix, an object of class `Kernel`,
`OptMeth`	Program used to solve the quadratic optimization problem.

Arguments

X: [matrix(1)]
Matrix of training data points.
Y: [vector(1)]
Vector of survival times.
delta: [vector(1)]
Vector of status: 1 = not censored.
meth_par: [numeric(1)]
Parameters of regularization.
kernel_type: [character(1)]
Kernel that is used to fit the model. The handled type are: linear kern ('lin_kern'), additive kernel ('add_kernel'), radial basis kernels ('rbf_kernel' and 'rbf4_kernel') and the polynomial kernel ('poly_kernel').
kernel_pars: [numeric(1)|vector(1)]
Parameters of kernel, when required.
bin_cat: [vector(1)]
Indexes of binary/categorical varibales
makediff: [character(1)]
String indicating which of 'makediff1', 'makediff2' or 'makediff3' will be used.
opt_alg: [character(1)]
Program that will be used to solve the quadratic optimization problem. Either quadprog or ipop.
sgf_sv: [integer(1)]
Number of decimal digits in the solution of the quadratic optimization problem.
sigf: [integer(1)]
Used by ipop. See ipop for details.
maxiter: [integer(1)]
Used by ipop. See ipop for details.
margin: [numeric(1)]
Used by ipop. See ipop for details.
bound: [numeric(1)]
Used by ipop. See ipop for details.
eig.tol: [numeric(1)]
Used by nearPD for adjusting positive definiteness. See nearPD for detail.
conv.tol: [numeric(1)]
Used by nearPD for adjusting positive definiteness. See nearPD for detail.
posd.tol: [numeric(1)]
Used by nearPD for adjusting positive definiteness. See nearPD for detail.

Author

Cesaire J. K. Fouodo