C# (CSharp) NumNet NMatrix.Map Beispiele

Beispiel #1

Datei: NMath.cs Projekt: sappho192/deep-learning-from-scratch

        public static NMatrix Softmax(NMatrix matrix)
        {
            var maxElem   = matrix.Max();
            var expMatrix = matrix.Map(
                (elem) => { return(Math.Exp(elem - maxElem)); });

            double expSum = 0;

            for (uint i = 0; i < expMatrix.Row * expMatrix.Col; i++)
            {
                expSum += expMatrix[i];
            }

            var resultMatrix = new NMatrix(expMatrix);

            for (uint i = 0; i < resultMatrix.Row * resultMatrix.Col; i++)
            {
                resultMatrix[i] = expMatrix[i] / expSum;
            }
            return(resultMatrix);
        }