var SVC = function(nClasses, nRows, vectors, coefficients, intercepts, weights, kernel, gamma, coef0, degree) {

    this.nClasses = nClasses;
    this.classes = new Array(nClasses);
    for (var i = 0; i < nClasses; i++) {
        this.classes[i] = i;
    }
    this.nRows = nRows;
    this.vectors = vectors;
    this.coefficients = coefficients;
    this.intercepts = intercepts;
    this.weights = weights;
    this.kernel = kernel.toUpperCase();
    this.gamma = gamma;
    this.coef0 = coef0;
    this.degree = degree;

    this.predict = function(features) {
    
        var kernels = new Array(vectors.length);
        var kernel;
        switch (this.kernel) {
            case 'LINEAR':
                // <x,x'>
                for (var i = 0; i < this.vectors.length; i++) {
                    kernel = 0.;
                    for (var j = 0; j < this.vectors[i].length; j++) {
                        kernel += this.vectors[i][j] * features[j];
                    }
                    kernels[i] = kernel;
                }
                break;
            case 'POLY':
                // (y<x,x'>+r)^d
                for (var i = 0; i < this.vectors.length; i++) {
                    kernel = 0.;
                    for (var j = 0; j < this.vectors[i].length; j++) {
                        kernel += this.vectors[i][j] * features[j];
                    }
                    kernels[i] = Math.pow((this.gamma * kernel) + this.coef0, this.degree);
                }
                break;
            case 'RBF':
                // exp(-y|x-x'|^2)
                for (var i = 0; i < this.vectors.length; i++) {
                    kernel = 0.;
                    for (var j = 0; j < this.vectors[i].length; j++) {
                        kernel += Math.pow(this.vectors[i][j] - features[j], 2);
                    }
                    kernels[i] = Math.exp(-this.gamma * kernel);
                }
                break;
            case 'SIGMOID':
                // tanh(y<x,x'>+r)
                for (var i = 0; i < this.vectors.length; i++) {
                    kernel = 0.;
                    for (var j = 0; j < this.vectors[i].length; j++) {
                        kernel += this.vectors[i][j] * features[j];
                    }
                    kernels[i] = Math.tanh((this.gamma * kernel) + this.coef0);
                }
                break;
        }
    
        var starts = new Array(this.nRows);
        for (var i = 0; i < this.nRows; i++) {
            if (i != 0) {
                var start = 0;
                for (var j = 0; j < i; j++) {
                    start += this.weights[j];
                }
                starts[i] = start;
            } else {
                starts[0] = 0;
            }
        }
    
        var ends = new Array(this.nRows);
        for (var i = 0; i < this.nRows; i++) {
            ends[i] = this.weights[i] + starts[i];
        }
    
        if (this.nClasses == 2) {
    
            for (var i = 0; i < kernels.length; i++) {
                kernels[i] = -kernels[i];
            }
    
            var decision = 0.;
            for (var k = starts[1]; k < ends[1]; k++) {
                decision += kernels[k] * this.coefficients[0][k];
            }
            for (var k = starts[0]; k < ends[0]; k++) {
                decision += kernels[k] * this.coefficients[0][k];
            }
            decision += this.intercepts[0];
    
            if (decision > 0) {
                return 0;
            }
            return 1;
    
        }
    
        var decisions = new Array(this.intercepts.length);
        for (var i = 0, d = 0, l = this.nRows; i < l; i++) {
            for (var j = i + 1; j < l; j++) {
                var tmp = 0.;
                for (var k = starts[j]; k < ends[j]; k++) {
                    tmp += this.coefficients[i][k] * kernels[k];
                }
                for (var k = starts[i]; k < ends[i]; k++) {
                    tmp += this.coefficients[j - 1][k] * kernels[k];
                }
                decisions[d] = tmp + this.intercepts[d];
                d++;
            }
        }
    
        var votes = new Array(this.intercepts.length);
        for (var i = 0, d = 0, l = this.nRows; i < l; i++) {
            for (var j = i + 1; j < l; j++) {
                votes[d] = decisions[d] > 0 ? i : j;
                d++;
            }
        }
    
        var amounts = new Array(this.nClasses).fill(0);
        for (var i = 0, l = votes.length; i < l; i++) {
            amounts[votes[i]] += 1;
        }
    
        var classVal = -1, classIdx = -1;
        for (var i = 0, l = amounts.length; i < l; i++) {
            if (amounts[i] > classVal) {
                classVal = amounts[i];
                classIdx= i;
            }
        }
        return this.classes[classIdx];
    
    }

};

if (typeof process !== 'undefined' && typeof process.argv !== 'undefined') {
    if (process.argv.length - 2 === 6) {

        // Features:
        var features = process.argv.slice(2);

        // Parameters:
        var vectors = [[19.0, 67.0, 203.0, 193.0, 129.0, 148.0], [19.0, 81.0, 217.0, 200.0, 131.0, 153.0], [19.0, 77.0, 211.0, 197.0, 130.0, 151.0], [18.0, 74.0, 216.0, 200.0, 131.0, 150.0], [8.0, 83.0, 220.0, 187.0, 144.0, 145.0], [7.0, 106.0, 163.0, 132.0, 146.0, 145.0], [7.0, 129.0, 182.0, 139.0, 152.0, 152.0], [7.0, 128.0, 182.0, 139.0, 152.0, 152.0], [9.0, 93.0, 245.0, 204.0, 146.0, 151.0], [2.0, 118.0, 206.0, 152.0, 160.0, 147.0], [2.0, 123.0, 224.0, 162.0, 164.0, 150.0], [1.0, 122.0, 157.0, 114.0, 157.0, 143.0], [4.0, 132.0, 178.0, 130.0, 157.0, 150.0], [1.0, 153.0, 152.0, 100.0, 164.0, 148.0], [1.0, 150.0, 173.0, 115.0, 167.0, 150.0], [2.0, 151.0, 152.0, 102.0, 162.0, 149.0], [1.0, 159.0, 162.0, 104.0, 167.0, 151.0], [178.0, 124.0, 169.0, 119.0, 162.0, 140.0], [177.0, 152.0, 121.0, 78.0, 160.0, 140.0], [178.0, 155.0, 115.0, 73.0, 159.0, 141.0], [144.0, 169.0, 124.0, 76.0, 163.0, 146.0], [1.0, 165.0, 150.0, 94.0, 167.0, 150.0], [178.0, 149.0, 119.0, 78.0, 159.0, 141.0], [164.0, 155.0, 119.0, 76.0, 160.0, 142.0], [1.0, 136.0, 156.0, 108.0, 160.0, 145.0], [178.0, 145.0, 128.0, 85.0, 160.0, 140.0], [114.0, 157.0, 119.0, 76.0, 160.0, 143.0], [168.0, 150.0, 115.0, 74.0, 158.0, 141.0], [0.0, 159.0, 157.0, 100.0, 167.0, 150.0], [177.0, 160.0, 118.0, 74.0, 161.0, 141.0], [0.0, 133.0, 191.0, 131.0, 167.0, 147.0], [178.0, 152.0, 124.0, 80.0, 160.0, 141.0], [178.0, 122.0, 162.0, 116.0, 160.0, 139.0], [178.0, 157.0, 127.0, 81.0, 162.0, 142.0], [178.0, 147.0, 122.0, 80.0, 159.0, 140.0], [1.0, 135.0, 149.0, 104.0, 159.0, 145.0], [0.0, 138.0, 198.0, 133.0, 169.0, 149.0], [179.0, 125.0, 167.0, 117.0, 161.0, 142.0], [178.0, 157.0, 114.0, 72.0, 159.0, 141.0], [1.0, 129.0, 182.0, 127.0, 164.0, 146.0], [1.0, 132.0, 159.0, 112.0, 160.0, 145.0], [178.0, 151.0, 116.0, 75.0, 158.0, 140.0], [177.0, 173.0, 122.0, 73.0, 164.0, 144.0], [177.0, 165.0, 128.0, 79.0, 164.0, 143.0], [178.0, 166.0, 122.0, 75.0, 163.0, 143.0], [177.0, 118.0, 120.0, 87.0, 153.0, 136.0], [178.0, 115.0, 135.0, 99.0, 154.0, 137.0], [177.0, 118.0, 122.0, 88.0, 153.0, 136.0], [124.0, 114.0, 123.0, 91.0, 151.0, 137.0], [177.0, 171.0, 114.0, 69.0, 162.0, 143.0], [177.0, 172.0, 113.0, 68.0, 162.0, 143.0], [176.0, 144.0, 123.0, 81.0, 159.0, 138.0], [178.0, 167.0, 118.0, 72.0, 162.0, 143.0], [177.0, 172.0, 123.0, 75.0, 164.0, 144.0], [177.0, 135.0, 134.0, 92.0, 159.0, 138.0], [177.0, 120.0, 139.0, 100.0, 156.0, 137.0], [178.0, 167.0, 119.0, 73.0, 162.0, 143.0]];
        var coefficients = [[0.0, 0.0038545776095045424, 0.0, 5.3340301342833886e-05, -0.0033247158696419685, -0.0, -0.0, -0.0, -0.0005832020412054078, -7.057383918306568e-05, -0.00036143565337392973, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -1.84284223988671e-05, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.00019441952851682932, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -6.526776098945923e-05, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0], [0.0, 0.0004320094925569954, 0.0, 0.0, 0.0, 0.0, 0.025302498031903337, 0.00211378176605504, 0.0, -0.006016072596945847, -0.0, -0.0, -0.021400207201012534, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0006153624681027348, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.00019438819844166922, -0.0, -0.005318489351289106, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.00011680196227296622, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0], [0.0, 0.0, 0.00021284795091569642, 0.0, 0.0, 0.00022676527329307724, 0.005901474744540431, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 1.0, 0.03514172035883584, 0.0, 1.0, -0.0, -0.0, -0.0, -0.002110636488197338, -1.0, -0.0, -0.0, -0.09241440956197279, -0.0, -0.0, -0.0, -0.05274462280859587, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.6213567548696584, -0.2665152966304088, -0.0, -0.0, -0.0, -1.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.00011847542874431661, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0, -0.0], [6.526776098945923e-05, 0.0, 0.0, 0.0, 0.0, 0.00011680196227296622, 0.0, 0.0, 0.0, 0.0, 0.0, 8.837019916436589e-05, 0.0, 0.0, 0.0, 3.0105229579950734e-05, 0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0, 1.0, 0.0, 1.0, 0.6196007776877644, 0.014877240287376452, 0.0, 1.0, 0.0, 1.0, 1.0, 1.0, 1.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, -1.0, -1.0, -1.0, -0.2525249717049514, -0.9139145934471427, -1.0, -0.8694337173117702, -1.0, -0.3487089413240337, -1.0, -1.0, -1.0, -1.0, -0.2498957941872232, -1.0]];
        var intercepts = [1.4580565469820796, 0.857852182962587, -1.0407286545400531, -0.9300982279802896, 7.657342570536519, -0.5929370566689991, -0.24919698650937327, -42.8270886357245, -0.3486237873011033, -113.99951084737917];
        var weights = [4, 5, 8, 25, 15];

        // Prediction:
        var clf = new SVC(5, 5, vectors, coefficients, intercepts, weights, "linear", 0.02, 0.0, 3);
        var prediction = clf.predict(features);
        console.log(prediction);

    }
}