提交 7eb19abc 编写于 作者: Y yangyaming

Refine the doc.

上级 a249c0ca
...@@ -2714,21 +2714,21 @@ def multiplex(inputs, index): ...@@ -2714,21 +2714,21 @@ def multiplex(inputs, index):
""" """
**Multiplex Layer** **Multiplex Layer**
Referring to the given index variable, this layer gathers from the input Referring to the given index variable, this layer selects rows from the
variables to output a multiplex variable. Assuming that there are :math:`m` input variables to construct a multiplex variable. Assuming that there are
input variables and let :math:`I_i` represents the i-th input variable and i :math:`m` input variables and :math:`I_i` represents the i-th input
is in [0, :math:`m`). All input variables are tensors with same shape variable and :math:`i` is in [0, :math:`m`). All input variables are
[:math:`d_0`, :math:`d_1`, ..., :math:`d_R`]. Please note that rank of the tensors with same shape [:math:`d_0`, :math:`d_1`, ..., :math:`d_R`].
input tensor should be at least 2. Each input variable will be treated as a Please note that rank of the input tensor should be at least 2. Each input
2-D matrix with shape [:math:`M`, :math:`N`] where :math:`M` for :math:`d_0` variable will be treated as a 2-D matrix with shape [:math:`M`, :math:`N`]
and :math:`N` for :math:`d_1` * :math:`d_2` * ... * :math:`d_R`. Let where :math:`M` for :math:`d_0` and :math:`N` for :math:`d_1` * :math:`d_2`
:math:`I_i[j]` be the j-th row of the i-th input variable. The given index * ... * :math:`d_R`. Let :math:`I_i[j]` be the j-th row of the i-th input
variable should be a 2-D tensor with shape [:math:`M`, 1]. Let `ID[i]` be variable. The given index variable should be a 2-D tensor with shape
the i-th index value of the index variable. Then the output variable will [:math:`M`, 1]. Let `ID[i]` be the i-th index value of the index variable.
be a tensor with shape [:math:`d_0`, :math:`d_1`, ..., :math:`d_R`]. If we Then the output variable will be a tensor with shape [:math:`d_0`,
treat the output tensor as a 2-D matrix with shape [:math:`M`, :math:`N`] :math:`d_1`, ..., :math:`d_R`]. If we treat the output tensor as a 2-D
and let :math:`O[i]` be the i-th row of the matrix, then `O[i]` is equal to matrix with shape [:math:`M`, :math:`N`] and let :math:`O[i]` be the i-th
:math:`I_{ID[i]}[i]`. row of the matrix, then `O[i]` is equal to :math:`I_{ID[i]}[i]`.
Args: Args:
inputs (list): A list of variables to gather from. All variables have the inputs (list): A list of variables to gather from. All variables have the
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