clear
clc
close?all

load（‘trainSIS.mat‘）;%?數(shù)據(jù)第一列是label，2：end是特征
x?=?trainSIS（:2:end）;
y?=?trainSIS（:1）;

%?%Split?the?data?into?training?and?test?sets
%?n?=?length（y）;
%?c?=?cvpartition（n‘HoldOut‘0.3）;
%?idxTrain?=?training（c1）;
%?idxTest?=?~idxTrain;
%?xTrain?=?x（idxTrain:）;
%?yTrain?=?y（idxTrain）;
%?xTest?=?x（idxTest:）;
%?yTest?=?y（idxTest:）;
xTrain?=?x;yTrain?=?y;
[BFitInfo]?=?lasso（xTrainy