Function accuracy

examples/machine_learning/perceptron.cpp:20–26

using namespace af;

float accuracy(const array &predicted, const array &target) {
    array val, plabels, tlabels;
    max(val, tlabels, target, 1);
    max(val, plabels, predicted, 1);

    return 100 * count<float>(plabels == tlabels) / tlabels.elements();
}

// Predict based on given parameters
array predict(const array &X, const array &Weights) {