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# tensorflow:: ops:: FractionalAvgPool

#include <nn_ops.h>

Performs fractional average pooling on the input.

## Summary

Fractional average pooling is similar to Fractional max pooling in the pooling region generation step. The only difference is that after pooling regions are generated, a mean operation is performed instead of a max operation in each pooling region.

Args:

• scope: A Scope object
• value: 4-D with shape [batch, height, width, channels] .
• pooling_ratio: Pooling ratio for each dimension of value , currently only supports row and col dimension and should be >= 1.0. For example, a valid pooling ratio looks like [1.0, 1.44, 1.73, 1.0]. The first and last elements must be 1.0 because we don't allow pooling on batch and channels dimensions. 1.44 and 1.73 are pooling ratio on height and width dimensions respectively.

Optional attributes (see Attrs ):

• pseudo_random: When set to True, generates the pooling sequence in a pseudorandom fashion, otherwise, in a random fashion. Check paper Benjamin Graham, Fractional Max-Pooling for difference between pseudorandom and random.
• overlapping: When set to True, it means when pooling, the values at the boundary of adjacent pooling cells are used by both cells. For example:

index 0 1 2 3 4

value 20 5 16 3 7

If the pooling sequence is [0, 2, 4], then 16, at index 2 will be used twice. The result would be [41/3, 26/3] for fractional avg pooling.

• deterministic: When set to True, a fixed pooling region will be used when iterating over a FractionalAvgPool node in the computation graph. Mainly used in unit test to make FractionalAvgPool deterministic.
• seed: If either seed or seed2 are set to be non-zero, the random number generator is seeded by the given seed. Otherwise, it is seeded by a random seed.
• seed2: An second seed to avoid seed collision.

Returns:

• Output output: output tensor after fractional avg pooling.
• Output row_pooling_sequence: row pooling sequence, needed to calculate gradient.
• Output col_pooling_sequence: column pooling sequence, needed to calculate gradient.

### Constructors and Destructors

FractionalAvgPool (const :: tensorflow::Scope & scope, :: tensorflow::Input value, const gtl::ArraySlice< float > & pooling_ratio)
FractionalAvgPool (const :: tensorflow::Scope & scope, :: tensorflow::Input value, const gtl::ArraySlice< float > & pooling_ratio, const FractionalAvgPool::Attrs & attrs)

### Public attributes

col_pooling_sequence
operation
output
row_pooling_sequence

### Public static functions

Deterministic (bool x)
Overlapping (bool x)
PseudoRandom (bool x)
Seed (int64 x)
Seed2 (int64 x)

### Structs

tensorflow:: ops:: FractionalAvgPool:: Attrs

Optional attribute setters for FractionalAvgPool .

## Public attributes

### col_pooling_sequence

::tensorflow::Output col_pooling_sequence

### operation

Operation operation

### output

::tensorflow::Output output

### row_pooling_sequence

::tensorflow::Output row_pooling_sequence

## Public functions

### FractionalAvgPool

FractionalAvgPool(
const ::tensorflow::Scope & scope,
::tensorflow::Input value,
const gtl::ArraySlice< float > & pooling_ratio
)

### FractionalAvgPool

FractionalAvgPool(
const ::tensorflow::Scope & scope,
::tensorflow::Input value,
const gtl::ArraySlice< float > & pooling_ratio,
const FractionalAvgPool::Attrs & attrs
)

## Public static functions

### Deterministic

Attrs Deterministic(
bool x
)

### Overlapping

Attrs Overlapping(
bool x
)

### PseudoRandom

Attrs PseudoRandom(
bool x
)

Attrs Seed(
int64 x
)

### Seed2

Attrs Seed2(
int64 x
)
[{ "type": "thumb-down", "id": "missingTheInformationINeed", "label":"Missing the information I need" },{ "type": "thumb-down", "id": "tooComplicatedTooManySteps", "label":"Too complicated / too many steps" },{ "type": "thumb-down", "id": "outOfDate", "label":"Out of date" },{ "type": "thumb-down", "id": "samplesCodeIssue", "label":"Samples / code issue" },{ "type": "thumb-down", "id": "otherDown", "label":"Other" }]
[{ "type": "thumb-up", "id": "easyToUnderstand", "label":"Easy to understand" },{ "type": "thumb-up", "id": "solvedMyProblem", "label":"Solved my problem" },{ "type": "thumb-up", "id": "otherUp", "label":"Other" }]