Channel class

A channel is a named input source that training algorithms can consume.

Constructors

Channel({required String channelName, required DataSource dataSource, CompressionType? compressionType, String? contentType, TrainingInputMode? inputMode, RecordWrapper? recordWrapperType, ShuffleConfig? shuffleConfig})

Channel.fromJson(Map<String, dynamic> json)

factory

Properties

channelName → String

The name of the channel.

final

compressionType → CompressionType?

If training data is compressed, the compression type. The default value is None. CompressionType is used only in Pipe input mode. In File mode, leave this field unset or set it to None.

final

contentType → String?

The MIME type of the data.

final

dataSource → DataSource

The location of the channel data.

final

hashCode → int

The hash code for this object.

no setter, inherited

inputMode → TrainingInputMode?

(Optional) The input mode to use for the data channel in a training job. If you don't set a value for InputMode, Amazon SageMaker uses the value set for TrainingInputMode. Use this parameter to override the TrainingInputMode setting in a AlgorithmSpecification request when you have a channel that needs a different input mode from the training job's general setting. To download the data from Amazon Simple Storage Service (Amazon S3) to the provisioned ML storage volume, and mount the directory to a Docker volume, use File input mode. To stream data directly from Amazon S3 to the container, choose Pipe input mode.

final

recordWrapperType → RecordWrapper?

Specify RecordIO as the value when input data is in raw format but the training algorithm requires the RecordIO format. In this case, Amazon SageMaker wraps each individual S3 object in a RecordIO record. If the input data is already in RecordIO format, you don't need to set this attribute. For more information, see Create a Dataset Using RecordIO.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

shuffleConfig → ShuffleConfig?

A configuration for a shuffle option for input data in a channel. If you use S3Prefix for S3DataType, this shuffles the results of the S3 key prefix matches. If you use ManifestFile, the order of the S3 object references in the ManifestFile is shuffled. If you use AugmentedManifestFile, the order of the JSON lines in the AugmentedManifestFile is shuffled. The shuffling order is determined using the Seed value.

final

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toJson() → Map<String, dynamic>

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited