Package topo :: Package base :: Module cf :: Class CFPLearningFn

Class CFPLearningFn

                       object --+    
                                |    
param.parameterized.Parameterized --+
                                    |
                                   CFPLearningFn

Known Subclasses:

Compute new CFs for a CFProjection based on input and output activity values.

Objects in this hierarchy of callable function objects compute a new set of CFs when given input and output patterns and a set of ConnectionField objects. Used for updating the weights of one CFProjection.

Objects in this class must support being called as a function with the arguments specified below.

Nested Classes

[hide private]

Inherited from param.parameterized.Parameterized: __metaclass__

Instance Methods

[hide private]

__call__(self, proj, input_activity, output_activity, learning_rate, **params)
Apply this learning function to the given set of ConnectionFields, and input and output activities, using the given learning_rate.

source code

constant_sum_connection_rate(self, proj, learning_rate)
Return the learning rate for a single connection assuming that the total rate is to be divided evenly among all the units in the connection field.

source code

Inherited from param.parameterized.Parameterized: __getstate__, __init__, __repr__, __setstate__, __str__, debug, defaults, force_new_dynamic_value, get_param_values, get_value_generator, inspect_value, message, print_param_values, script_repr, set_dynamic_time_fn, state_pop, state_push, verbose, warning

Inherited from param.parameterized.Parameterized (private): _check_params, _instantiate_param, _set_name, _setup_params

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

Class Methods

[hide private]

Inherited from param.parameterized.Parameterized: params, print_param_defaults

Class Variables

[hide private]

__abstract = True
bool(x) -> bool

Inherited from param.parameterized.Parameterized: name, print_level

Properties

[hide private]

Inherited from object: __class__

Class Variable Details

[hide private]

__abstract

bool(x) -> bool

Returns True when the argument x is true, False otherwise. The builtins True and False are the only two instances of the class bool. The class bool is a subclass of the class int, and cannot be subclassed.

Value:

True