yzhliu closed pull request #8245: Use argmax instead of argmax_channel in
Accuracy to keep dimention
URL: https://github.com/apache/incubator-mxnet/pull/8245
This is a PR merged from a forked repository.
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diff --git a/scala-package/core/src/main/scala/ml/dmlc/mxnet/EvalMetric.scala
b/scala-package/core/src/main/scala/ml/dmlc/mxnet/EvalMetric.scala
index 98a09d2250..ed99a1f90e 100644
--- a/scala-package/core/src/main/scala/ml/dmlc/mxnet/EvalMetric.scala
+++ b/scala-package/core/src/main/scala/ml/dmlc/mxnet/EvalMetric.scala
@@ -107,7 +107,11 @@ class Accuracy extends EvalMetric("accuracy") {
"labels and predictions should have the same length.")
for ((pred, label) <- preds zip labels) {
- val predLabel = NDArray.argmax_channel(pred)
+ val predLabel = if (pred.shape == label.shape) {
+ NDArray.argmax(Map("axis" -> 1, "keepdims" -> true))(pred)
+ } else {
+ NDArray.argmax_channel(pred)
+ }
require(label.shape == predLabel.shape,
s"label ${label.shape} and prediction ${predLabel.shape}" +
s"should have the same length.")
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