StridedSlice¶

Versioned name : StridedSlice-1

Category : Data movement operation

Short description : StridedSlice extracts a strided slice of a tensor. It is similar to generalized array indexing in Python*.

Attributes

• Description : begin_mask is a bit mask. begin_mask[i] equal to 1 means that the corresponding dimension of the begin input is ignored and the ‘real’ beginning of the tensor is used along corresponding dimension.

• Range of values : a list of 0 s and 1 s

• Type : int[]

• Default value : None

• Required : yes

• Description : end_mask is a bit mask. If end_mask[i] is 1, the corresponding dimension of the end input is ignored and the real ‘end’ of the tensor is used along corresponding dimension.

• Range of values : a list of 0 s and 1 s

• Type : int[]

• Default value : None

• Required : yes

• Description : new_axis_mask is a bit mask. If new_axis_mask[i] is 1, a length 1 dimension is inserted on the i -th position of input tensor.

• Range of values : a list of 0 s and 1 s

• Type : int[]

• Default value : [0]

• Required : no

• Description : shrink_axis_mask is a bit mask. If shrink_axis_mask[i] is 1, the dimension on the i -th position is deleted.

• Range of values : a list of 0 s and 1 s

• Type : int[]

• Default value : [0]

• Required : no

• Description : ellipsis_mask is a bit mask. It inserts missing dimensions on a position of a non-zero bit.

• Range of values : a list of 0 s and 1. Only one non-zero bit is allowed.

• Type : int[]

• Default value : [0]

• Required : no

Inputs :

• 1 : Multidimensional input tensor to be sliced. Required.

• 2 : begin input - 1D input tensor with begin indexes for input tensor slicing. Required. Out-of-bounds values are silently clamped. If begin_mask[i] is 1, the value of begin[i] is ignored and the range of the appropriate dimension starts from 0. Negative values mean indexing starts from the end. For example, if foo=[1,2,3], begin[0]=-1 means begin[0]=3.

• 3 : end input - 1D input tensor with end indexes for input tensor slicing. Required. Out-of-bounds values will be silently clamped. If end_mask[i] is 1, the value of end[i] is ignored and the full range of the appropriate dimension is used instead. Negative values mean indexing starts from the end. For example, if foo=[1,2,3], end[0]=-1 means end[0]=3.

• 4 : stride input - 1D input tensor with strides. Optional.

Example

<layer ... type="StridedSlice" ...>
<input>
<port id="0">
<dim>1</dim>
<dim>2</dim>
<dim>384</dim>
<dim>640</dim>
<dim>8</dim>
</port>
<port id="1">
<dim>5</dim>
</port>
<port id="2">
<dim>5</dim>
</port>
<port id="3">
<dim>5</dim>
</port>
</input>
<output>
<port id="4">
<dim>1</dim>
<dim>384</dim>
<dim>640</dim>
<dim>8</dim>
</port>
</output>
</layer>