public static Datasets <DataSetMnist> read_data_sets(string train_dir,
bool one_hot = false,
TF_DataType dtype = TF_DataType.TF_FLOAT,
bool reshape = true,
int validation_size = 5000,
int?train_size = null,
int?test_size = null,
string source_url = DEFAULT_SOURCE_URL)
{
if (train_size != null && validation_size >= train_size)
{
throw new ArgumentException("Validation set should be smaller than training set");
}
Web.Download(source_url + TRAIN_IMAGES, train_dir, TRAIN_IMAGES);
Compress.ExtractGZip(Path.Join(train_dir, TRAIN_IMAGES), train_dir);
var train_images = extract_images(Path.Join(train_dir, TRAIN_IMAGES.Split('.')[0]), limit: train_size);
Web.Download(source_url + TRAIN_LABELS, train_dir, TRAIN_LABELS);
Compress.ExtractGZip(Path.Join(train_dir, TRAIN_LABELS), train_dir);
var train_labels = extract_labels(Path.Join(train_dir, TRAIN_LABELS.Split('.')[0]), one_hot: one_hot, limit: train_size);
Web.Download(source_url + TEST_IMAGES, train_dir, TEST_IMAGES);
Compress.ExtractGZip(Path.Join(train_dir, TEST_IMAGES), train_dir);
var test_images = extract_images(Path.Join(train_dir, TEST_IMAGES.Split('.')[0]), limit: test_size);
Web.Download(source_url + TEST_LABELS, train_dir, TEST_LABELS);
Compress.ExtractGZip(Path.Join(train_dir, TEST_LABELS), train_dir);
var test_labels = extract_labels(Path.Join(train_dir, TEST_LABELS.Split('.')[0]), one_hot: one_hot, limit: test_size);
int end = train_images.shape[0];
var validation_images = train_images[np.arange(validation_size)];
var validation_labels = train_labels[np.arange(validation_size)];
train_images = train_images[np.arange(validation_size, end)];
train_labels = train_labels[np.arange(validation_size, end)];
var train = new DataSetMnist(train_images, train_labels, dtype, reshape);
var validation = new DataSetMnist(validation_images, validation_labels, dtype, reshape);
var test = new DataSetMnist(test_images, test_labels, dtype, reshape);
return(new Datasets <DataSetMnist>(train, validation, test));
}
public static Datasets read_data_sets(string train_dir,
bool one_hot = false,
TF_DataType dtype = TF_DataType.TF_FLOAT,
bool reshape = true,
int validation_size = 5000,
string source_url = DEFAULT_SOURCE_URL)
{
Web.Download(source_url + TRAIN_IMAGES, train_dir, TRAIN_IMAGES);
Compress.ExtractGZip(Path.Join(train_dir, TRAIN_IMAGES), train_dir);
var train_images = extract_images(Path.Join(train_dir, TRAIN_IMAGES.Split('.')[0]));
Web.Download(source_url + TRAIN_LABELS, train_dir, TRAIN_LABELS);
Compress.ExtractGZip(Path.Join(train_dir, TRAIN_LABELS), train_dir);
var train_labels = extract_labels(Path.Join(train_dir, TRAIN_LABELS.Split('.')[0]), one_hot: one_hot);
Web.Download(source_url + TEST_IMAGES, train_dir, TEST_IMAGES);
Compress.ExtractGZip(Path.Join(train_dir, TEST_IMAGES), train_dir);
var test_images = extract_images(Path.Join(train_dir, TEST_IMAGES.Split('.')[0]));
Web.Download(source_url + TEST_LABELS, train_dir, TEST_LABELS);
Compress.ExtractGZip(Path.Join(train_dir, TEST_LABELS), train_dir);
var test_labels = extract_labels(Path.Join(train_dir, TEST_LABELS.Split('.')[0]), one_hot: one_hot);
int end = train_images.shape[0];
var validation_images = train_images[np.arange(validation_size)];
var validation_labels = train_labels[np.arange(validation_size)];
train_images = train_images[np.arange(validation_size, end)];
train_labels = train_labels[np.arange(validation_size, end)];
var train = new DataSet(train_images, train_labels, dtype, reshape);
var validation = new DataSet(validation_images, validation_labels, dtype, reshape);
var test = new DataSet(test_images, test_labels, dtype, reshape);
return(new Datasets(train, validation, test));
}