numl.Math.Functions.Cost.CofiCostFunction.Initialize C# (CSharp) Method

        public override void Initialize()
        {
            base.Initialize();

            YReformed = Y.Reshape(X.Rows, VectorType.Row);
        }

        public void Test_Cofi_CostFunction_Regularized()
        {
            Matrix rMat = Y.ToBinary(i => i > 0d);

            ICostFunction costFunction = new CofiCostFunction() { R = rMat, X = X, Y = Y.Unshape(), Lambda = 1.5, Regularizer = null, CollaborativeFeatures = X.Cols };
            costFunction.Initialize();
            double cost = costFunction.ComputeCost(Vector.Combine(X.Unshape(), Theta.Unshape()));
            Vector grad = costFunction.ComputeGradient(Vector.Combine(X.Unshape(), Theta.Unshape()));

            Almost.Equal(55.172, System.Math.Round(cost, 3), 0.0011);

            this.CheckCofiGradient(1.5);
        }