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Computes number of nonzero elements across dimensions of a tensor. (deprecated arguments) (deprecated arguments)
tf.compat.v1.count_nonzero(
input_tensor=None,
axis=None,
keepdims=None,
dtype=tf.dtypes.int64
,
name=None,
reduction_indices=None,
keep_dims=None,
input=None
)
Reduces input_tensor
along the dimensions given in axis
. Unless keepdims
is true, the rank of the tensor is reduced by 1 for each entry in axis
. If keepdims
is true, the reduced dimensions are retained with length 1.
If axis
has no entries, all dimensions are reduced, and a tensor with a single element is returned.
For example:
x = tf.constant([[0, 1, 0], [1, 1, 0]])
tf.math.count_nonzero(x) # 3
tf.math.count_nonzero(x, 0) # [1, 2, 0]
tf.math.count_nonzero(x, 1) # [1, 2]
tf.math.count_nonzero(x, 1, keepdims=True) # [[1], [2]]
tf.math.count_nonzero(x, [0, 1]) # 3
For example:
x = tf.constant(["", "a", " ", "b", ""])
tf.math.count_nonzero(x) # 3, with "a", " ", and "b" as nonzero strings.
Args | |
---|---|
input_tensor | The tensor to reduce. Should be of numeric type, bool , or string . |
axis | The dimensions to reduce. If None (the default), reduces all dimensions. Must be in the range [-rank(input_tensor), rank(input_tensor)) . |
keepdims | If true, retains reduced dimensions with length 1. |
dtype | The output dtype; defaults to tf.int64 . |
name | A name for the operation (optional). |
reduction_indices | The old (deprecated) name for axis. |
keep_dims | Deprecated alias for keepdims . |
input | Overrides input_tensor. For compatibility. |
Returns | |
---|---|
The reduced tensor (number of nonzero values). |