Package mdp :: Package hinet :: Class DoubleRhomb2dSwitchboard
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Class DoubleRhomb2dSwitchboard


Rectangular lattice switchboard covering a rhombic lattice.

All inner points of the rhombic lattice are covered twice. The rectangular
fields are rotated by 45 degree.

We assume that both the first and last row is a long row, e.g.

*   *   *   *
  *   *   *
*   *   *   *
  *   *   *
*   *   *   *

The incoming data is expected to contain the long rows first, then
the short rows.

The alignment of the first field is chosen to minimize cutaway.

Nested Classes [hide private]
    Inherited from Node
  __metaclass__
This Metaclass is meant to overwrite doc strings of methods like execute, stop_training, inverse with the ones defined in the corresponding private methods _execute, _stop_training, _inverse, etc...
Instance Methods [hide private]
 
__init__(self, x_long_in_channels, y_long_in_channels, diag_field_channels, in_channel_dim=1)
Calculate the connections.

Inherited from ChannelSwitchboard: get_out_channel_node

Inherited from object: __delattr__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__

    Inherited from Switchboard
 
_execute(self, x)
 
_inverse(self, x)
 
is_invertible(self)
Return True if the node can be inverted, False otherwise.
 
is_trainable(self)
Return True if the node can be trained, False otherwise.
    Inherited from Node
 
__add__(self, other)
 
__call__(self, x, *args, **kargs)
Calling an instance of Node is equivalent to call its 'execute' method.
 
__repr__(self)
repr(x)
 
__str__(self)
str(x)
 
_check_input(self, x)
 
_check_output(self, y)
 
_check_train_args(self, x, *args, **kwargs)
 
_get_supported_dtypes(self)
Return the list of dtypes supported by this node.
 
_get_train_seq(self)
 
_if_training_stop_training(self)
 
_pre_execution_checks(self, x)
This method contains all pre-execution checks.
 
_pre_inversion_checks(self, y)
This method contains all pre-inversion checks.
 
_refcast(self, x)
Helper function to cast arrays to the internal dtype.
 
_set_dtype(self, t)
 
_set_input_dim(self, n)
 
_set_output_dim(self, n)
 
_stop_training(self, *args, **kwargs)
 
_train(self, x)
 
copy(self, protocol=-1)
Return a deep copy of the node.
 
execute(self, x, *args, **kargs)
Process the data contained in 'x'.
 
get_current_train_phase(self)
Return the index of the current training phase.
 
get_dtype(self)
Return dtype.
 
get_input_dim(self)
Return input dimensions.
 
get_output_dim(self)
Return output dimensions.
 
get_remaining_train_phase(self)
Return the number of training phases still to accomplish.
 
get_supported_dtypes(self)
Return dtypes supported by the node as a list of numpy.dtype objects.
 
inverse(self, y, *args, **kargs)
Invert 'y'.
 
is_training(self)
Return True if the node is in the training phase, False otherwise.
 
save(self, filename, protocol=-1)
Save a pickled serialization of the node to 'filename'.
 
set_dtype(self, t)
Set internal structures' dtype.
 
set_input_dim(self, n)
Set input dimensions.
 
set_output_dim(self, n)
Set output dimensions.
 
stop_training(self, *args, **kwargs)
Stop the training phase.
 
train(self, x, *args, **kwargs)
Update the internal structures according to the input data 'x'.
Properties [hide private]

Inherited from object: __class__

    Inherited from Node
  _train_seq
List of tuples: [(training-phase1, stop-training-phase1), (training-phase2, stop_training-phase2), ...
  dtype
dtype
  input_dim
Input dimensions
  output_dim
Output dimensions
  supported_dtypes
Supported dtypes
Method Details [hide private]

__init__(self, x_long_in_channels, y_long_in_channels, diag_field_channels, in_channel_dim=1)
(Constructor)

 
Calculate the connections.

Note that the incoming data will be interpreted as a rhombic grid,
as it is produced by DoubleRect2dSwitchboard.

Keyword arguments:
x_long_in_channels -- Number of long input channels in the x-direction.
y_long_in_channels -- Number of long input channels in the y-direction
diag_field_channels -- Field edge size (before the rotation).
in_channel_dim -- Number of connections per input channel

Overrides: object.__init__