Defined in tensorflow/python/ops/

Computes the max of elements across dimensions of a SparseTensor.

This Op takes a SparseTensor and is the sparse counterpart to tf.reduce_max(). In particular, this Op also returns a dense Tensor instead of a sparse one.

Reduces sp_input along the dimensions given in reduction_axes. Unless keep_dims is true, the rank of the tensor is reduced by 1 for each entry in reduction_axes. If keep_dims is true, the reduced dimensions are retained with length 1.

If reduction_axes has no entries, all dimensions are reduced, and a tensor with a single element is returned. Additionally, the axes can be negative, similar to the indexing rules in Python.

For example:

.html# 'x' represents [[1, ?, 2]
.html#                 [?, 3, ?]]
.html# where ? is implicitly-zero.
tf.sparse_reduce_max(x) ==> 3
tf.sparse_reduce_max(x, 0) ==> [1, 3, 2]
tf.sparse_reduce_max(x, 1) ==> [2, 3]  .html# Can also use -1 as the axis.
tf.sparse_reduce_max(x, 1, keep_dims=True) ==> [[2], [3]]
tf.sparse_reduce_max(x, [0, 1]) ==> 3


  • sp_input: The SparseTensor to reduce. Should have numeric type.
  • axis: The dimensions to reduce; list or scalar. If None (the default), reduces all dimensions.
  • keep_dims: If true, retain reduced dimensions with length 1.
  • reduction_axes: Deprecated name of axis.


The reduced Tensor.