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我在网上找了一段交叉法求解lssvm回归时参数gam和sig2最优参数的程序，我带入了数据，进行运行时有错误，因为我是初学者，所以调整不好，请您帮忙。请您一定要帮助啊，很急，谢谢，谢谢！显示的错误如下，M文件在附件当中。再次感谢！

Warning: PREMNMX is an obsolete function.

> In nntobsf at 18

In premnmx at 20

Use MAPMINMAX instead, type HELP PREMNMX for bug warning.

-m....................................................................................................-converting now to CFILE implementation

+negative or zero number of support vectors...m??? Error using ==> initlssvm at 65

empty datapoint vector...

Error in ==> simlssvm at 69

model = initlssvm(model{:});

Error in ==> simlssvm>simmultidimoutput at 235

[Ytn Yln] = simlssvm({model.xtrain,

model.ytrain(:,d),model.type,gam,sig2,kernel,'original'},{model.alpha(:,d),model.b(d)},Xt);

Error in ==> simlssvm at 116

[Y Yl] = simmultidimoutput(model,Xt,Yt,nb_to_sim);

Error in ==> validate at 96

output = feval(simfct,nmodel,Xtest);

Error in ==> crossvalidate at 162

[costs(l), modell,output(p(validation),:)] = ...

Error in ==> leaveoneout at 103

[cost,costs,output] = crossvalidate(model,X,Y,size(X,1),estfct,combinefct,corrected,trainfct,simfct);

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