Pooling

extensions.convolution.Pooling.Pooling(
    self,
    pre,
    post,
    target,
    psp='pre.r',
    operation='max',
    name=None,
    copied=False,
)

Performs a pooling operation (e.g. max.pooling) on the pre-synaptic population.

Each post-synaptic neuron covers a specific region (extent) of the pre-synaptic population, over which the result of the operation on firing rates will be assigned to sum(target).

The extent is automatically computed using the geometry of the populations, but can be specified in the `connect_pooling()`` methods.

Example:

inp = ann.Population(geometry=(100, 100), neuron=ann.Neuron(parameters="r = 0.0"))
pop = ann.Population(geometry=(50, 50), neuron=ann.Neuron(equations="r = sum(exc)"))

proj = Pooling(inp, pop, 'exc', operation='max') # max-pooling
proj.connect_pooling() # extent=(2, 2) is implicit

Parameters

Name	Description	Default
pre	pre-synaptic population (either its name or a `Population` object).	required
post	post-synaptic population (either its name or a `Population` object).	required
target	type of the connection	required
operation	pooling function to be applied (“max”, “min”, “mean”)	`'max'`

Methods

Name	Description
connect_pooling
connectivity_matrix	Not available.
load	Not available.
receptive_fields	Not available.
save	Not available.
save_connectivity	Not available.

connect_pooling

extensions.convolution.Pooling.Pooling.connect_pooling(extent=None, delays=0.0)

Parameters

Name	Type	Description	Default
extent	tuple	extent of the pooling area expressed in the geometry of the pre-synaptic population (e.g `(2, 2)`). In each dimension, the product of this extent with the number of neurons in the post-synaptic population must be equal to the number of pre-synaptic neurons. Default: None.	`None`
delays	float	synaptic delay in ms	`0.0`

connectivity_matrix

extensions.convolution.Pooling.Pooling.connectivity_matrix(fill=0.0)

Not available.

load

extensions.convolution.Pooling.Pooling.load(filename)

Not available.

receptive_fields

extensions.convolution.Pooling.Pooling.receptive_fields(
    variable='w',
    in_post_geometry=True,
)

Not available.

save

extensions.convolution.Pooling.Pooling.save(filename)

Not available.

save_connectivity

extensions.convolution.Pooling.Pooling.save_connectivity(filename)

Not available.