This operation creates a legacy predictor that does not include all the predictor functionalities provided by Amazon Forecast. To create a predictor that is compatible with all aspects of Forecast, use create_auto_predictor.
See https://www.paws-r-sdk.com/docs/forecastservice_create_predictor/ for full documentation.
forecastservice_create_predictor(
PredictorName,
AlgorithmArn = NULL,
ForecastHorizon,
ForecastTypes = NULL,
PerformAutoML = NULL,
AutoMLOverrideStrategy = NULL,
PerformHPO = NULL,
TrainingParameters = NULL,
EvaluationParameters = NULL,
HPOConfig = NULL,
InputDataConfig,
FeaturizationConfig,
EncryptionConfig = NULL,
Tags = NULL,
OptimizationMetric = NULL
)[required] A name for the predictor.
The Amazon Resource Name (ARN) of the algorithm to use for model
training. Required if PerformAutoML is not set to true.
Supported algorithms:
arn:aws:forecast:::algorithm/ARIMA
arn:aws:forecast:::algorithm/CNN-QR
arn:aws:forecast:::algorithm/Deep_AR_Plus
arn:aws:forecast:::algorithm/ETS
arn:aws:forecast:::algorithm/NPTS
arn:aws:forecast:::algorithm/Prophet
[required] Specifies the number of time-steps that the model is trained to predict. The forecast horizon is also called the prediction length.
For example, if you configure a dataset for daily data collection (using
the DataFrequency parameter of the
create_dataset operation) and set
the forecast horizon to 10, the model returns predictions for 10 days.
The maximum forecast horizon is the lesser of 500 time-steps or 1/3 of the TARGET_TIME_SERIES dataset length.
Specifies the forecast types used to train a predictor. You can specify
up to five forecast types. Forecast types can be quantiles from 0.01 to
0.99, by increments of 0.01 or higher. You can also specify the mean
forecast with mean.
The default value is ["0.10", "0.50", "0.9"].
Whether to perform AutoML. When Amazon Forecast performs AutoML, it evaluates the algorithms it provides and chooses the best algorithm and configuration for your training dataset.
The default value is false. In this case, you are required to specify
an algorithm.
Set PerformAutoML to true to have Amazon Forecast perform AutoML.
This is a good option if you aren't sure which algorithm is suitable for
your training data. In this case, PerformHPO must be false.
The LatencyOptimized AutoML override strategy is only available in
private beta. Contact Amazon Web Services Support or your account
manager to learn more about access privileges.
Used to overide the default AutoML strategy, which is to optimize
predictor accuracy. To apply an AutoML strategy that minimizes training
time, use LatencyOptimized.
This parameter is only valid for predictors trained using AutoML.
Whether to perform hyperparameter optimization (HPO). HPO finds optimal hyperparameter values for your training data. The process of performing HPO is known as running a hyperparameter tuning job.
The default value is false. In this case, Amazon Forecast uses default
hyperparameter values from the chosen algorithm.
To override the default values, set PerformHPO to true and,
optionally, supply the HyperParameterTuningJobConfig object. The tuning
job specifies a metric to optimize, which hyperparameters participate in
tuning, and the valid range for each tunable hyperparameter. In this
case, you are required to specify an algorithm and PerformAutoML must
be false.
The following algorithms support HPO:
DeepAR+
CNN-QR
The hyperparameters to override for model training. The hyperparameters that you can override are listed in the individual algorithms. For the list of supported algorithms, see aws-forecast-choosing-recipes.
Used to override the default evaluation parameters of the specified algorithm. Amazon Forecast evaluates a predictor by splitting a dataset into training data and testing data. The evaluation parameters define how to perform the split and the number of iterations.
Provides hyperparameter override values for the algorithm. If you don't provide this parameter, Amazon Forecast uses default values. The individual algorithms specify which hyperparameters support hyperparameter optimization (HPO). For more information, see aws-forecast-choosing-recipes.
If you included the HPOConfig object, you must set PerformHPO to
true.
[required] Describes the dataset group that contains the data to use to train the predictor.
[required] The featurization configuration.
An Key Management Service (KMS) key and the Identity and Access Management (IAM) role that Amazon Forecast can assume to access the key.
The optional metadata that you apply to the predictor to help you categorize and organize them. Each tag consists of a key and an optional value, both of which you define.
The following basic restrictions apply to tags:
Maximum number of tags per resource - 50.
For each resource, each tag key must be unique, and each tag key can have only one value.
Maximum key length - 128 Unicode characters in UTF-8.
Maximum value length - 256 Unicode characters in UTF-8.
If your tagging schema is used across multiple services and resources, remember that other services may have restrictions on allowed characters. Generally allowed characters are: letters, numbers, and spaces representable in UTF-8, and the following characters: + - = . _ : / @.
Tag keys and values are case sensitive.
Do not use aws:, AWS:, or any upper or lowercase combination of
such as a prefix for keys as it is reserved for Amazon Web Services
use. You cannot edit or delete tag keys with this prefix. Values can
have this prefix. If a tag value has aws as its prefix but the key
does not, then Forecast considers it to be a user tag and will count
against the limit of 50 tags. Tags with only the key prefix of aws
do not count against your tags per resource limit.
The accuracy metric used to optimize the predictor.