private static void TransformByClassDatasetToUppercaseLettersDataset()
{
EMNISTParser.ReadAndPersistEMNISTDatasetFilteredOut(
@".\Resources\emnist-byclass-test-images-idx3-ubyte.gz",
@".\Resources\emnist-byclass-test-labels-idx1-ubyte.gz",
label => label > 9 && label < 36,
label => (byte)(label - 10));
EMNISTParser.ReadAndPersistEMNISTDatasetFilteredOut(
@".\Resources\emnist-byclass-train-images-idx3-ubyte.gz",
@".\Resources\emnist-byclass-train-labels-idx1-ubyte.gz",
label => label > 9 && label < 36,
label => (byte)(label - 10));
}
public PreparedLearningDataset BuildDatasetIfNotPresent()
{
if (!File.Exists(string.Format(EMNISTParser.EMNISTTestFilenameMask, OutputFileSuffix)) ||
!File.Exists(string.Format(EMNISTParser.EMNISTTrainFilenameMask, OutputFileSuffix)))
{
return(EMNISTParser.ParseFromGZipedDefinitionsForCntk(this));
}
return(new PreparedLearningDataset
{
TestingDatasetPath = string.Format(EMNISTParser.EMNISTTestFilenameMask, OutputFileSuffix),
TrainingDatasetPath = string.Format(EMNISTParser.EMNISTTrainFilenameMask, OutputFileSuffix),
ValueToLabelMap = EMNISTParser.BuildEMNISTValueToLabelMapFor(this)
});
}
