vanbelle2Fit: survivalsvm (ranking approach)

Description Usage Arguments Value Author(s)

Description

fits the 'vanbelle2' version of the ranking approach of survival support vector ananlysis.

Usage

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vanbelle2Fit(X, Y, delta, meth_par = 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)

Arguments

X

[matrix(1)]
Matrix of training data point.

Y

[vector(1)]
Vector of survival times.

delta

[vector(1)]
Vector of status: 1 = not censored.

meth_par

[numeric(1)]
Parameter of regularization.

kernel_type

[numeric(1)]
Kernel that will be 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]
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

[inter(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.

Value

[VB2FitObj(1)] Object of class VB2FitObj 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.

Author(s)

Cesaire J. K. Fouodo


survivalsvm documentation built on May 2, 2019, 9:29 a.m.