public override void Update(NDArray labels, NDArray preds)
{
if (labels == null)
{
throw new ArgumentNullException(nameof(labels));
}
if (preds == null)
{
throw new ArgumentNullException(nameof(preds));
}
CheckLabelShapes(labels, preds);
var predData = new mx_float[preds.Size];
var labelData = new mx_float[labels.Size];
preds.SyncCopyToCPU(predData);
labels.SyncCopyToCPU(labelData);
var len = (uint)preds.Size;
mx_float sum = 0;
for (var i = 0; i < len; ++i)
{
mx_float diff = predData[i] - labelData[i];
sum += diff * diff;
}
this.SumMetric += sum / len;
++this.NumInst;
}
public override void Update(NDArray labels, NDArray preds)
{
if (labels == null)
{
throw new ArgumentNullException(nameof(labels));
}
if (preds == null)
{
throw new ArgumentNullException(nameof(preds));
}
var len = labels.GetShape()[0];
var m = preds.GetShape()[1];
var predData = new mx_float[len * m];
var labelData = new mx_float[len];
preds.SyncCopyToCPU(predData);
labels.SyncCopyToCPU(labelData);
for (var i = 0; i < len; ++i)
{
// ToDo: (int)(i * m + labelData[i]) is no problem?
this.SumMetric += (float)(-Math.Log(Math.Max(predData[(int)(i * m + labelData[i])], Epsilon)));
this.NumInst += 1;
}
}
public override void Update(NDArray labels, NDArray preds)
{
if (labels == null)
{
throw new ArgumentNullException(nameof(labels));
}
if (preds == null)
{
throw new ArgumentNullException(nameof(preds));
}
Logging.CHECK_EQ(labels.GetShape().Count, 1);
var len = labels.GetShape()[0];
var predData = new mx_float[len];
var labelData = new mx_float[len];
preds.ArgmaxChannel().SyncCopyToCPU(predData);
labels.SyncCopyToCPU(labelData);
for (var i = 0; i < len; ++i)
{
this.SumMetric += Math.Abs(predData[i] - labelData[i]) < float.Epsilon ? 1 : 0;
this.NumInst += 1;
}
}
public override void Update(NDArray labels, NDArray preds)
{
if (labels == null)
{
throw new ArgumentNullException(nameof(labels));
}
if (preds == null)
{
throw new ArgumentNullException(nameof(preds));
}
CheckLabelShapes(labels, preds);
var predData = new mx_float[preds.Size];
var labelData = new mx_float[labels.Size];
preds.SyncCopyToCPU(predData);
labels.SyncCopyToCPU(labelData);
var len = (uint)preds.Size;
mx_float sum = 0;
for (var i = 0; i < len; ++i)
{
var diff = predData[i] - labelData[i];
sum += diff * diff;
}
mx_float mse = sum / len;
if (mse > 0)
{
this.SumMetric += (mx_float)(10 * Math.Log(255.0d / mse) / Log10);
}
else
{
this.SumMetric += 99.0f;
}
++this.NumInst;
}
