haojin2 commented on a change in pull request #15277: [Numpy] Numpy argsort
URL: https://github.com/apache/incubator-mxnet/pull/15277#discussion_r296126980
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File path: python/mxnet/symbol/numpy/_symbol.py
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@@ -1138,6 +1143,33 @@ def argmax(a, axis=None, out=None):
return _npi.argmax(a, axis=axis, keepdims=False, out=out)
+@set_module('mxnet.symbol.numpy')
+def argsort(a, axis=-1, kind='quicksort', order=None):
+ """
+ Returns the indices that would sort an input array along the given axis.
+ This function performs sorting along the given axis and returns an array
+ of indices having same shape as an input array that index data in sorted
order.
+
+ Parameters
+ ----------
+ a : ndarray
+ Input array
+ axis : int, optional
+ The axis along which to sort teh input tensor.
+ If not given, the last, dimension -1 will be used by default.
+
+ Returns
+ -------
+ output : ndarray of indicies that sort input array along the specified axis
+ Examples:
+ """
+ if kind != 'quicksort':
+ raise AttributeError('mxnet.numpy.argsort does not support other
sorting methods')
+ if order is not None:
+ raise AttributeError('mxnet.numpy.argsort does not support sorting
with fields ordering')
+ return _npi.argsort(a, axis)
+
+
Review comment:
your sanity check fails here.
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