Accord.Statistics.Kernels.DynamicTimeWarping.k C# (CSharp) Method

        internal double k(double[] x, double[] y)
        {
            Locals m = locals.Value;

            double[] sx = snorm(x);
            double[] sy = snorm(y);

            // if (!m.vectors.TryGetValue(x, out sx))
            //     m.vectors[x] = sx = snorm(x);

            //if (!m.vectors.TryGetValue(y, out sy))
            //    m.vectors[y] = sy = snorm(y);

            // Compute the cosine of the global distance
            double distance = D(m, sx, sy);
            return System.Math.Cos(distance);
        }