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Feature View#

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FeatureView#

hsfs.feature_view.FeatureView(
    name,
    query,
    featurestore_id,
    id=None,
    version=None,
    description="",
    labels=[],
    transformation_functions={},
)

Creation#

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create_feature_view#

FeatureStore.create_feature_view(
    name, query, version=None, description="", labels=[], transformation_functions={}
)

Create a feature view metadata object and saved it to Hopsworks.

Arguments

  • name str: Name of the feature view to create.
  • query hsfs.constructor.query.Query: Feature store Query.
  • version Optional[int]: Version of the feature view to create, defaults to None and will create the feature view with incremented version from the last version in the feature store.
  • description Optional[str]: A string describing the contents of the feature view to improve discoverability for Data Scientists, defaults to empty string "".
  • labels Optional[List[str]]: A list of feature names constituting the prediction label/feature of the feature view. When replaying a Query during model inference, the label features can be omitted from the feature vector retrieval. Defaults to [], no label.
  • transformation_functions Optional[Dict[str, hsfs.transformation_function.TransformationFunction]]: A dictionary mapping tansformation functions to to the features they should be applied to before writing out the vector and at inference time. Defaults to {}, no transformations.

Returns:

FeatureView: The feature view metadata object.

Retrieval#

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get_feature_view#

FeatureStore.get_feature_view(name, version=None)

Get a feature view entity from the feature store.

Getting a feature view from the Feature Store means getting its metadata.

Arguments

  • name str: Name of the feature view to get.
  • version Optional[int]: Version of the feature view to retrieve, defaults to None and will return the version=1.

Returns

FeatureView: The feature view metadata object.

Raises

  • RestAPIError: If unable to retrieve feature view from the feature store.

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get_feature_views#

FeatureStore.get_feature_views(name)

Get a list of all versions of a feature view entity from the feature store.

Getting a feature view from the Feature Store means getting its metadata.

Arguments

  • name: Name of the feature view to get.

Returns

FeatureView: List of feature view metadata objects.

Raises

  • RestAPIError: If unable to retrieve feature view from the feature store.

Properties#

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description#

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featurestore_id#

Feature store id.

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id#

Feature view id.

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labels#

The labels/prediction feature of the feature view.

Can be a composite of multiple features.

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name#

Name of the feature view.

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query#

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schema#

Feature view schema.

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transformation_functions#

Set transformation functions.

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version#

Version number of the feature view.

Methods#

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add_tag#

FeatureView.add_tag(name, value)

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add_training_dataset_tag#

FeatureView.add_training_dataset_tag(training_dataset_version, name, value)

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create_train_test_split#

FeatureView.create_train_test_split(
    test_size=None,
    train_start="",
    train_end="",
    test_start="",
    test_end="",
    storage_connector=None,
    location="",
    description="",
    data_format="csv",
    coalesce=False,
    seed=None,
    statistics_config=None,
    write_options={},
)

Create a training dataset and save data into location.

Data Formats

The feature store currently supports the following data formats for training datasets:

  1. tfrecord
  2. csv
  3. tsv
  4. parquet
  5. avro
  6. orc

Currently not supported petastorm, hdf5 and npy file formats.

Arguments

  • test_size Optional[float]: size of test set.
  • train_start Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • train_end Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • test_start Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • test_end Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • storage_connector Optional[hsfs.StorageConnector]: Storage connector defining the sink location for the training dataset, defaults to None, and materializes training dataset on HopsFS.
  • location Optional[str]: Path to complement the sink storage connector with, e.g if the storage connector points to an S3 bucket, this path can be used to define a sub-directory inside the bucket to place the training dataset. Defaults to "", saving the training dataset at the root defined by the storage connector.
  • description Optional[str]: A string describing the contents of the training dataset to improve discoverability for Data Scientists, defaults to empty string "".
  • data_format Optional[str]: The data format used to save the training dataset, defaults to "csv"-format.
  • coalesce Optional[bool]: If true the training dataset data will be coalesced into a single partition before writing. The resulting training dataset will be a single file per split. Default False.
  • seed Optional[int]: Optionally, define a seed to create the random splits with, in order to guarantee reproducability, defaults to None.
  • statistics_config Optional[Union[hsfs.StatisticsConfig, bool, dict]]: A configuration object, or a dictionary with keys "enabled" to generally enable descriptive statistics computation for this feature group, "correlations" to turn on feature correlation computation and "histograms" to compute feature value frequencies. The values should be booleans indicating the setting. To fully turn off statistics computation pass statistics_config=False. Defaults to None and will compute only descriptive statistics.
  • write_options Optional[Dict[Any, Any]]: Additional write options as key-value pairs, defaults to {}. When using the python engine, write_options can contain the following entries:
    • key spark and value an object of type hsfs.core.job_configuration.JobConfiguration to configure the Hopsworks Job used to compute the training dataset.
    • key wait_for_job and value True or False to configure whether or not to the save call should return only after the Hopsworks Job has finished. By default it waits.

Returns

(td_version, Job): Tuple of training dataset version and job. When using the python engine, it returns the Hopsworks Job that was launched to create the training dataset.

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create_train_validation_test_split#

FeatureView.create_train_validation_test_split(
    validation_size=None,
    test_size=None,
    train_start="",
    train_end="",
    validation_start="",
    validation_end="",
    test_start="",
    test_end="",
    storage_connector=None,
    location="",
    description="",
    data_format="csv",
    coalesce=False,
    seed=None,
    statistics_config=None,
    write_options={},
)

Create a training dataset and save data into location.

Data Formats

The feature store currently supports the following data formats for training datasets:

  1. tfrecord
  2. csv
  3. tsv
  4. parquet
  5. avro
  6. orc

Currently not supported petastorm, hdf5 and npy file formats.

Arguments

  • validation_size Optional[float]: size of validation set.
  • test_size Optional[float]: size of test set.
  • train_start Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • train_end Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • validation_start Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • validation_end Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • test_start Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • test_end Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • storage_connector Optional[hsfs.StorageConnector]: Storage connector defining the sink location for the training dataset, defaults to None, and materializes training dataset on HopsFS.
  • location Optional[str]: Path to complement the sink storage connector with, e.g if the storage connector points to an S3 bucket, this path can be used to define a sub-directory inside the bucket to place the training dataset. Defaults to "", saving the training dataset at the root defined by the storage connector.
  • description Optional[str]: A string describing the contents of the training dataset to improve discoverability for Data Scientists, defaults to empty string "".
  • data_format Optional[str]: The data format used to save the training dataset, defaults to "csv"-format.
  • coalesce Optional[bool]: If true the training dataset data will be coalesced into a single partition before writing. The resulting training dataset will be a single file per split. Default False.
  • seed Optional[int]: Optionally, define a seed to create the random splits with, in order to guarantee reproducability, defaults to None.
  • statistics_config Optional[Union[hsfs.StatisticsConfig, bool, dict]]: A configuration object, or a dictionary with keys "enabled" to generally enable descriptive statistics computation for this feature group, "correlations" to turn on feature correlation computation and "histograms" to compute feature value frequencies. The values should be booleans indicating the setting. To fully turn off statistics computation pass statistics_config=False. Defaults to None and will compute only descriptive statistics.
  • write_options Optional[Dict[Any, Any]]: Additional write options as key-value pairs, defaults to {}. When using the python engine, write_options can contain the following entries:
    • key spark and value an object of type hsfs.core.job_configuration.JobConfiguration to configure the Hopsworks Job used to compute the training dataset.
    • key wait_for_job and value True or False to configure whether or not to the save call should return only after the Hopsworks Job has finished. By default it waits.

Returns

(td_version, Job): Tuple of training dataset version and job. When using the python engine, it returns the Hopsworks Job that was launched to create the training dataset.

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create_training_data#

FeatureView.create_training_data(
    start_time="",
    end_time="",
    storage_connector=None,
    location="",
    description="",
    data_format="csv",
    coalesce=False,
    seed=None,
    statistics_config=None,
    write_options={},
)

Create a training dataset and save data into location.

Data Formats

The feature store currently supports the following data formats for training datasets:

  1. tfrecord
  2. csv
  3. tsv
  4. parquet
  5. avro
  6. orc

Currently not supported petastorm, hdf5 and npy file formats.

Arguments

  • start_time Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • end_time Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • storage_connector Optional[hsfs.StorageConnector]: Storage connector defining the sink location for the training dataset, defaults to None, and materializes training dataset on HopsFS.
  • location Optional[str]: Path to complement the sink storage connector with, e.g if the storage connector points to an S3 bucket, this path can be used to define a sub-directory inside the bucket to place the training dataset. Defaults to "", saving the training dataset at the root defined by the storage connector.
  • description Optional[str]: A string describing the contents of the training dataset to improve discoverability for Data Scientists, defaults to empty string "".
  • data_format Optional[str]: The data format used to save the training dataset, defaults to "csv"-format.
  • coalesce Optional[bool]: If true the training dataset data will be coalesced into a single partition before writing. The resulting training dataset will be a single file per split. Default False.
  • seed Optional[int]: Optionally, define a seed to create the random splits with, in order to guarantee reproducability, defaults to None.
  • statistics_config Optional[Union[hsfs.StatisticsConfig, bool, dict]]: A configuration object, or a dictionary with keys "enabled" to generally enable descriptive statistics computation for this feature group, "correlations" to turn on feature correlation computation and "histograms" to compute feature value frequencies. The values should be booleans indicating the setting. To fully turn off statistics computation pass statistics_config=False. Defaults to None and will compute only descriptive statistics.
  • write_options Optional[Dict[Any, Any]]: Additional write options as key-value pairs, defaults to {}. When using the python engine, write_options can contain the following entries:
    • key spark and value an object of type hsfs.core.job_configuration.JobConfiguration to configure the Hopsworks Job used to compute the training dataset.
    • key wait_for_job and value True or False to configure whether or not to the save call should return only after the Hopsworks Job has finished. By default it waits.

Returns

(td_version, Job): Tuple of training dataset version and job. When using the python engine, it returns the Hopsworks Job that was launched to create the training dataset.

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delete#

FeatureView.delete()

Delete current feature view and all associated metadata.

Potentially dangerous operation

This operation drops all metadata associated with this version of the feature view and related training dataset and materialized data in HopsFS.

Raises

RestAPIError.

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delete_all_training_datasets#

FeatureView.delete_all_training_datasets()

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delete_tag#

FeatureView.delete_tag(name)

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delete_training_dataset#

FeatureView.delete_training_dataset(version)

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delete_training_dataset_tag#

FeatureView.delete_training_dataset_tag(training_dataset_version, name)

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from_response_json#

FeatureView.from_response_json(json_dict)

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get_batch_data#

FeatureView.get_batch_data(start_time=None, end_time=None, read_options=None)

start_time: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f. end_time: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f. read_options: User provided read options. Defaults to {}.

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get_batch_query#

FeatureView.get_batch_query(start_time=None, end_time=None)

Get a query string of batch query.

Arguments

  • start_time Optional[datetime.datetime]: Optional. Start time of the batch query.
  • end_time Optional[datetime.datetime]: Optional. End time of the batch query.

Returns

str: batch query

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get_feature_vector#

FeatureView.get_feature_vector(entry, passed_features={}, external=None)

Returns assembled serving vector from online feature store.

Arguments

  • entry List[Dict[str, Any]]: dictionary of feature group primary key and values provided by serving application.
  • passed_features Optional[Dict[str, Any]]: dictionary of feature values provided by the application at runtime. They can replace features values fetched from the feature store as well as providing feature values which are not available in the feature store.
  • external Optional[bool]: boolean, optional. If set to True, the connection to the online feature store is established using the same host as for the host parameter in the hsfs.connection() method. If set to False, the online feature store storage connector is used which relies on the private IP. Defaults to True if connection to Hopsworks is established from external environment (e.g AWS Sagemaker or Google Colab), otherwise to False.

Returns

list List of feature values related to provided primary keys, ordered according to positions of this features in the feature view query.

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get_feature_vectors#

FeatureView.get_feature_vectors(entry, passed_features={}, external=None)

Returns assembled serving vectors in batches from online feature store.

Arguments

  • entry List[Dict[str, Any]]: a list of dictionary of feature group primary key and values provided by serving application.
  • passed_features Optional[List[Dict[str, Any]]]: a list of dictionary of feature values provided by the application at runtime. They can replace features values fetched from the feature store as well as providing feature values which are not available in the feature store.
  • external Optional[bool]: boolean, optional. If set to True, the connection to the online feature store is established using the same host as for the host parameter in the hsfs.connection() method. If set to False, the online feature store storage connector is used which relies on the private IP. Defaults to True if connection to Hopsworks is established from external environment (e.g AWS Sagemaker or Google Colab), otherwise to False.

Returns

List[list] List of lists of feature values related to provided primary keys, ordered according to positions of this features in the feature view query.

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get_tag#

FeatureView.get_tag(name)

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get_tags#

FeatureView.get_tags()

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get_train_test_split#

FeatureView.get_train_test_split(training_dataset_version, read_options=None)

Get training data from storage or feature groups.

Info

If a materialised training data has deleted. Use recreate_training_dataset() to recreate the training data.

Arguments

  • version: training dataset version
  • read_options Optional[Dict[Any, Any]]: Additional read options as key-value pairs, defaults to {}. When using the python engine, read_options can contain the following entries:

Returns

(X_train, y_train, X_test, y_test): Tuple of dataframe of features and labels

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get_train_validation_test_split#

FeatureView.get_train_validation_test_split(training_dataset_version, read_options=None)

Get training data from storage or feature groups.

Info

If a materialised training data has deleted. Use recreate_training_dataset() to recreate the training data.

Arguments

  • version: training dataset version
  • read_options Optional[Dict[Any, Any]]: Additional read options as key-value pairs, defaults to {}. When using the python engine, read_options can contain the following entries:

Returns

(X_train, y_train, X_val, y_val, X_test, y_test): Tuple of dataframe of features and labels

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get_training_data#

FeatureView.get_training_data(training_dataset_version, read_options=None)

Get training data from storage or feature groups.

Info

If a materialised training data has deleted. Use recreate_training_dataset() to recreate the training data.

Arguments

  • version: training dataset version
  • read_options Optional[Dict[Any, Any]]: Additional read options as key-value pairs, defaults to {}. When using the python engine, read_options can contain the following entries:

Returns

(X, y): Tuple of dataframe of features and labels

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get_training_dataset_tag#

FeatureView.get_training_dataset_tag(training_dataset_version, name)

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get_training_dataset_tags#

FeatureView.get_training_dataset_tags(training_dataset_version)

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init_batch_scoring#

FeatureView.init_batch_scoring(training_dataset_version=None)

Initialise and cache parametrized transformation functions.

Arguments

  • training_dataset_version Optional[int]: int, optional. Default to be 1. Transformation statistics are fetched from training dataset and apply in serving vector.

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init_serving#

FeatureView.init_serving(training_dataset_version=None, external=None)

Initialise and cache parametrized prepared statement to retrieve feature vector from online feature store.

Arguments

  • training_dataset_version Optional[int]: int, optional. Default to be 1. Transformation statistics are fetched from training dataset and apply in serving vector.
  • batch: boolean, optional. If set to True, prepared statements will be initialised for retrieving serving vectors as a batch.
  • external Optional[bool]: boolean, optional. If set to True, the connection to the online feature store is established using the same host as for the host parameter in the hsfs.connection() method. If set to False, the online feature store storage connector is used which relies on the private IP. Defaults to True if connection to Hopsworks is established from external environment (e.g AWS Sagemaker or Google Colab), otherwise to False.

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json#

FeatureView.json()

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preview_feature_vector#

FeatureView.preview_feature_vector(external=None)

Returns a sample of assembled serving vector from online feature store.

Arguments

  • external Optional[bool]: boolean, optional. If set to True, the connection to the online feature store is established using the same host as for the host parameter in the hsfs.connection() method. If set to False, the online feature store storage connector is used which relies on the private IP. Defaults to True if connection to Hopsworks is established from external environment (e.g AWS Sagemaker or Google Colab), otherwise to False.

Returns

list List of feature values, ordered according to positions of this features in training dataset query.

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preview_feature_vectors#

FeatureView.preview_feature_vectors(n, external=None)

Returns n samples of assembled serving vectors in batches from online feature store.

Arguments

  • n int: int. Number of feature vectors to return.
  • external Optional[bool]: boolean, optional. If set to True, the connection to the online feature store is established using the same host as for the host parameter in the hsfs.connection() method. If set to False, the online feature store storage connector is used which relies on the private IP. Defaults to True if connection to Hopsworks is established from external environment (e.g AWS Sagemaker or Google Colab), otherwise to False.

Returns

List[list] List of lists of feature values , ordered according to positions of this features in training dataset query.

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purge_all_training_data#

FeatureView.purge_all_training_data()

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purge_training_data#

FeatureView.purge_training_data(version)

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recreate_training_dataset#

FeatureView.recreate_training_dataset(version, write_options=None)

Recreate a training dataset.

Info

If a materialised training data has deleted. Use recreate_training_dataset() to recreate the training data.

Arguments

  • version int: training dataset version
  • read_options: Additional read options as key-value pairs, defaults to {}. When using the python engine, read_options can contain the following entries:

Returns

Job: When using the python engine, it returns the Hopsworks Job that was launched to create the training dataset.

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to_dict#

FeatureView.to_dict()

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train_test_split#

FeatureView.train_test_split(
    test_size=None,
    train_start="",
    train_end="",
    test_start="",
    test_end="",
    description="",
    statistics_config=None,
    read_options=None,
)

Get training data from feature groups.

Info

If a materialised training data has deleted. Use recreate_training_dataset() to recreate the training data.

Arguments

  • test_size Optional[float]: size of test set. Should be between 0 and 1.
  • train_start Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • train_end Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • test_start Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • test_end Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • description Optional[str]: A string describing the contents of the training dataset to improve discoverability for Data Scientists, defaults to empty string "".
  • statistics_config Optional[Union[hsfs.StatisticsConfig, bool, dict]]: A configuration object, or a dictionary with keys "enabled" to generally enable descriptive statistics computation for this feature group, "correlations" to turn on feature correlation computation and "histograms" to compute feature value frequencies. The values should be booleans indicating the setting. To fully turn off statistics computation pass statistics_config=False. Defaults to None and will compute only descriptive statistics.
  • read_options Optional[Dict[Any, Any]]: Additional read options as key-value pairs, defaults to {}. When using the python engine, read_options can contain the following entries:

Returns

(X_train, y_train, X_test, y_test): Tuple of dataframe of features and labels

[source]

train_validation_test_split#

FeatureView.train_validation_test_split(
    validation_size=None,
    test_size=None,
    train_start="",
    train_end="",
    validation_start="",
    validation_end="",
    test_start="",
    test_end="",
    description="",
    statistics_config=None,
    read_options=None,
)

Get training data from feature groups.

Info

If a materialised training data has deleted. Use recreate_training_dataset() to recreate the training data.

Arguments

  • validation_size Optional[float]: size of validation set. Should be between 0 and 1.
  • test_size Optional[float]: size of test set. Should be between 0 and 1.
  • train_start Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • train_end Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • validation_start Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • validation_end Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • test_start Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • test_end Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • description Optional[str]: A string describing the contents of the training dataset to improve discoverability for Data Scientists, defaults to empty string "".
  • statistics_config Optional[Union[hsfs.StatisticsConfig, bool, dict]]: A configuration object, or a dictionary with keys "enabled" to generally enable descriptive statistics computation for this feature group, "correlations" to turn on feature correlation computation and "histograms" to compute feature value frequencies. The values should be booleans indicating the setting. To fully turn off statistics computation pass statistics_config=False. Defaults to None and will compute only descriptive statistics.
  • read_options Optional[Dict[Any, Any]]: Additional read options as key-value pairs, defaults to {}. When using the python engine, read_options can contain the following entries:

Returns

(X_train, y_train, X_val, y_val, X_test, y_test): Tuple of dataframe of features and labels

[source]

training_data#

FeatureView.training_data(
    start_time=None, end_time=None, description="", statistics_config=None, read_options=None
)

Get training data from feature groups.

Info

If a materialised training data has deleted. Use recreate_training_dataset() to recreate the training data.

Arguments

  • start_time Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • end_time Optional[str]: timestamp in second or wallclock_time: Datetime string. The String should be formatted in one of the following formats %Y%m%d, %Y%m%d%H, %Y%m%d%H%M, %Y%m%d%H%M%S, or %Y%m%d%H%M%S%f.
  • description Optional[str]: A string describing the contents of the training dataset to improve discoverability for Data Scientists, defaults to empty string "".
  • statistics_config Optional[Union[hsfs.StatisticsConfig, bool, dict]]: A configuration object, or a dictionary with keys "enabled" to generally enable descriptive statistics computation for this feature group, "correlations" to turn on feature correlation computation and "histograms" to compute feature value frequencies. The values should be booleans indicating the setting. To fully turn off statistics computation pass statistics_config=False. Defaults to None and will compute only descriptive statistics.
  • read_options Optional[Dict[Any, Any]]: Additional read options as key-value pairs, defaults to {}. When using the python engine, read_options can contain the following entries:

Returns

(X, y): Tuple of dataframe of features and labels. If there are no labels, y returns None.

[source]

update#

FeatureView.update()

[source]

update_from_response_json#

FeatureView.update_from_response_json(json_dict)