Computes the sum along segments of a tensor.
tf.math.segment_sum(
data, segment_ids, name=None
)
Read the section on segmentation for an explanation of segments.
Computes a tensor such that
\(output_i = \sum_j data_j\) where sum is over j such
that segment_ids[j] == i.
If the sum is empty for a given segment ID i, output[i] = 0.
c = tf.constant([[1,2,3,4], [4, 3, 2, 1], [5,6,7,8]])
tf.segment_sum(c, tf.constant([0, 0, 1]))
# ==> [[5, 5, 5, 5],
# [5, 6, 7, 8]]
data: A Tensor. Must be one of the following types: float32, float64, int32, uint8, int16, int8, complex64, int64, qint8, quint8, qint32, bfloat16, uint16, complex128, half, uint32, uint64.segment_ids: A Tensor. Must be one of the following types: int32, int64.
A 1-D tensor whose size is equal to the size of data's
first dimension. Values should be sorted and can be repeated.name: A name for the operation (optional).A Tensor. Has the same type as data.