updated docs

a53354eb · Davis King · fcc7a75c · a53354eb
Commit a53354eb authored Jan 09, 2020 by Davis King
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dlib/dnn/loss_abstract.h dlib/dnn/loss_abstract.h +2 -1

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--- a/dlib/dnn/loss_abstract.h
+++ b/dlib/dnn/loss_abstract.h
@@ -290,7 +290,8 @@ namespace dlib
                - sub.get_output().k() == 1
                - sub.get_output().num_samples() == input_tensor.num_samples()
                - sub.sample_expansion_factor() == 1
-                - all values pointed to by truth are +1 or -1.
+                - all values pointed to by truth are non-zero.  Nominally they should be +1 or -1,
+                  each indicating the desired class label.
        !*/
    };