Fann Functions
PHP Manual

fann_init_weights

Initialize the weights using Widrow + Nguyen’s algorithm

Description

bool fann_init_weights(resource $ann, resource $train_data)

Initialize the weights using Widrow + Nguyen’s algorithm.

This function behaves similarly to fann_randomize_weights. It will use the algorithm developed by Derrick Nguyen and Bernard Widrow to set the weights in such a way as to speed up training. This technique is not always successful, and in some cases can be less efficient than a purely random initialization.

The algorithm requires access to the range of the input data (for example largest and smallest input), and therefore accepts a second argument, data, which is the training data that will be used to train the network.

Parameters

ann

Neural network resource.

train_data

Neural network training data resource.

Return Values

Returns true on success, or false otherwise.

See Also

  • fann_randomize_weights
  • fann_read_train_from_file