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TrainingOptions(mapping=None, *, ignore_unknown_fields=False, **kwargs)
Options used in model training.
Attributes |
|
---|---|
Name | Description |
max_iterations |
int
The maximum number of iterations in training. Used only for iterative training algorithms. |
loss_type |
google.cloud.bigquery_v2.types.Model.LossType
Type of loss function used during training run. |
learn_rate |
float
Learning rate in training. Used only for iterative training algorithms. |
l1_regularization |
google.protobuf.wrappers_pb2.DoubleValue
L1 regularization coefficient. |
l2_regularization |
google.protobuf.wrappers_pb2.DoubleValue
L2 regularization coefficient. |
min_relative_progress |
google.protobuf.wrappers_pb2.DoubleValue
When early_stop is true, stops training when accuracy improvement is less than 'min_relative_progress'. Used only for iterative training algorithms. |
warm_start |
google.protobuf.wrappers_pb2.BoolValue
Whether to train a model from the last checkpoint. |
early_stop |
google.protobuf.wrappers_pb2.BoolValue
Whether to stop early when the loss doesn't improve significantly any more (compared to min_relative_progress). Used only for iterative training algorithms. |
input_label_columns |
Sequence[str]
Name of input label columns in training data. |
data_split_method |
google.cloud.bigquery_v2.types.Model.DataSplitMethod
The data split type for training and evaluation, e.g. RANDOM. |
data_split_eval_fraction |
float
The fraction of evaluation data over the whole input data. The rest of data will be used as training data. The format should be double. Accurate to two decimal places. Default value is 0.2. |
data_split_column |
str
The column to split data with. This column won't be used as a feature. 1. When data_split_method is CUSTOM, the corresponding column should be boolean. The rows with true value tag are eval data, and the false are training data. 2. When data_split_method is SEQ, the first DATA_SPLIT_EVAL_FRACTION rows (from smallest to largest) in the corresponding column are used as training data, and the rest are eval data. It respects the order in Orderable data types: https://cloud.google.com/bigquery/docs/reference/standard-sql/data-types#data-type-properties |
learn_rate_strategy |
google.cloud.bigquery_v2.types.Model.LearnRateStrategy
The strategy to determine learn rate for the current iteration. |
initial_learn_rate |
float
Specifies the initial learning rate for the line search learn rate strategy. |
label_class_weights |
Mapping[str, float]
Weights associated with each label class, for rebalancing the training data. Only applicable for classification models. |
user_column |
str
User column specified for matrix factorization models. |
item_column |
str
Item column specified for matrix factorization models. |
distance_type |
google.cloud.bigquery_v2.types.Model.DistanceType
Distance type for clustering models. |
num_clusters |
int
Number of clusters for clustering models. |
model_uri |
str
Google Cloud Storage URI from which the model was imported. Only applicable for imported models. |
optimization_strategy |
google.cloud.bigquery_v2.types.Model.OptimizationStrategy
Optimization strategy for training linear regression models. |
hidden_units |
Sequence[int]
Hidden units for dnn models. |
batch_size |
int
Batch size for dnn models. |
dropout |
google.protobuf.wrappers_pb2.DoubleValue
Dropout probability for dnn models. |
max_tree_depth |
int
Maximum depth of a tree for boosted tree models. |
subsample |
float
Subsample fraction of the training data to grow tree to prevent overfitting for boosted tree models. |
min_split_loss |
google.protobuf.wrappers_pb2.DoubleValue
Minimum split loss for boosted tree models. |
num_factors |
int
Num factors specified for matrix factorization models. |
feedback_type |
google.cloud.bigquery_v2.types.Model.FeedbackType
Feedback type that specifies which algorithm to run for matrix factorization. |
wals_alpha |
google.protobuf.wrappers_pb2.DoubleValue
Hyperparameter for matrix factoration when implicit feedback type is specified. |
kmeans_initialization_method |
google.cloud.bigquery_v2.types.Model.KmeansEnums.KmeansInitializationMethod
The method used to initialize the centroids for kmeans algorithm. |
kmeans_initialization_column |
str
The column used to provide the initial centroids for kmeans algorithm when kmeans_initialization_method is CUSTOM. |
time_series_timestamp_column |
str
Column to be designated as time series timestamp for ARIMA model. |
time_series_data_column |
str
Column to be designated as time series data for ARIMA model. |
auto_arima |
bool
Whether to enable auto ARIMA or not. |
non_seasonal_order |
google.cloud.bigquery_v2.types.Model.ArimaOrder
A specification of the non-seasonal part of the ARIMA model: the three components (p, d, q) are the AR order, the degree of differencing, and the MA order. |
data_frequency |
google.cloud.bigquery_v2.types.Model.DataFrequency
The data frequency of a time series. |
include_drift |
bool
Include drift when fitting an ARIMA model. |
holiday_region |
google.cloud.bigquery_v2.types.Model.HolidayRegion
The geographical region based on which the holidays are considered in time series modeling. If a valid value is specified, then holiday effects modeling is enabled. |
time_series_id_column |
str
The time series id column that was used during ARIMA model training. |
time_series_id_columns |
Sequence[str]
The time series id columns that were used during ARIMA model training. |
horizon |
int
The number of periods ahead that need to be forecasted. |
preserve_input_structs |
bool
Whether to preserve the input structs in output feature names. Suppose there is a struct A with field b. When false (default), the output feature name is A_b. When true, the output feature name is A.b. |
auto_arima_max_order |
int
The max value of non-seasonal p and q. |
decompose_time_series |
google.protobuf.wrappers_pb2.BoolValue
If true, perform decompose time series and save the results. |
clean_spikes_and_dips |
google.protobuf.wrappers_pb2.BoolValue
If true, clean spikes and dips in the input time series. |
adjust_step_changes |
google.protobuf.wrappers_pb2.BoolValue
If true, detect step changes and make data adjustment in the input time series. |
Classes
LabelClassWeightsEntry
LabelClassWeightsEntry(mapping=None, *, ignore_unknown_fields=False, **kwargs)
The abstract base class for a message.
Parameters | |
---|---|
Name | Description |
kwargs |
dict
Keys and values corresponding to the fields of the message. |
mapping |
Union[dict,
A dictionary or message to be used to determine the values for this message. |
ignore_unknown_fields |
Optional(bool)
If True, do not raise errors for unknown fields. Only applied if |
Methods
__delattr__
__delattr__(key)
Delete the value on the given field.
This is generally equivalent to setting a falsy value.
__eq__
__eq__(other)
Return True if the messages are equal, False otherwise.
__ne__
__ne__(other)
Return True if the messages are unequal, False otherwise.
__setattr__
__setattr__(key, value)
Set the value on the given field.
For well-known protocol buffer types which are marshalled, either the protocol buffer object or the Python equivalent is accepted.