fann_subset_train_data
(PECL fann >= 1.0.0)
fann_subset_train_data — Returns an copy of a subset of the train data
説明
Returns an copy of a subset of the train data resource, starting at position
pos and length elements forward.
The fann_subset_train_data(train_data, 0, fann_length_train_data(train_data)) do the same as
fann_duplicate_train_data()
パラメータ
data-
ニューラルネットワークトレーニングリソース。
pos-
Starting position.
length-
The number of copied elements.
戻り値
成功した場合にニューラルネットワークトレーニングリソース、エラー時に false を返します。
＋add a note
User Contributed Notes 1 note
geekgirl dot joy at gmail dot com ¶
5 years ago
<?php
// Use this code to split your data into smaller sets.
// Useful for splitting your training data into training and testing groups
// Load Data
$data_file = "MyTrainingData.data";
$train_data = fann_read_train_from_file(dirname(__FILE__) . DIRECTORY_SEPARATOR . $data_file);
// Calculate how many examples are in the first group
$total_length = fann_length_train_data($train_data);
$a_length = floor($total_length / 10);
// Split the subsets
$training_data_a = fann_subset_train_data($train_data, 0, $a_length);
$training_data_b = fann_subset_train_data($train_data, $a_length, $total_length-$a_length);
// Save the training data to separate files
fann_save_train ($training_data_a, 'MyTrainingData_Subset_A.data'); // 1/10 of the training data
fann_save_train ($training_data_b, 'MyTrainingData_Subset_B.data'); // 9/10 of the training data