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 0s and 1s
• 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 0s and 1s
• 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 0s and 1s
• 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 0s and 1s
• 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 0s 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>