在我看来，您的评估方法是错误的。应该是这样的：
public double evaluate(double[] features, svm_model model) { svm_node[] nodes = new svm_node[features.length-1]; for (int i = 1; i < features.length; i++) { svm_node node = new svm_node(); node.index = i; node.value = features[i]; nodes[i-1] = node; } int totalClasses = 2;int[] labels = new int[totalClasses]; svm.svm_get_labels(model,labels); double[] prob_estimates = new double[totalClasses]; double v = svm.svm_predict_probability(model, nodes, prob_estimates); for (int i = 0; i < totalClasses; i++){ System.out.print("(" + labels[i] + ":" + prob_estimates[i] + ")"); } System.out.println("(Actual:" + features[0] + " Prediction:" + v + ")"); return v;}
