regression - using SVM to predict traffic volume -


i used svm predict traffic volume data, using tool libsvm. input data in moment t-2, t-1 , t; output data in moment t+1. param below:

    param.svm_type = svm_parameter.nu_svr;     param.kernel_type = svm_parameter.rbf;     param.cache_size = 100;     param.eps = 0.00001;     param.c = 1.9;     param.nu = 0.5; 

but predict value a constant number, don't know problem. thanks.


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