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public static double LogLoss(double[][] predict, double[][] outputs) { var setCount= outputs.Length; var classCount = outputs[0].Length; double logLoss = 0; for (int sample = 0; sample < setCount; sample++) { for (int @class = 0; @class < classCount; @class++) logLoss += outputs[sample][@class]*predict[sample][@class].Log(); } return -logLoss/setCount; }