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Specifies a metric that the training algorithm writes to stderr or stdout . Amazon SageMakerhyperparameter tuning captures all defined metrics. You specify one metric that a hyperparameter tuning job uses as its objective metric to choose the best training job.

Name The name of the metric.
Type: String
Length Constraints: Minimum length of 1. Maximum length of 255.
Pattern: .+
Required: Yes

Regex A regular expression that searches the output of a training job and gets the value of the metric. For more information about using regular expressions to define metrics, see Defining Objective Metrics.
Type: String
Length Constraints: Minimum length of 1. Maximum length of 500.
Pattern: .+
Required: Yes

For more information about using this API in one of the language-specific AWS SDKs, see the following: + AWS SDK for C++ + AWS SDK for Go + AWS SDK for Go - Pilot + AWS SDK for Java + AWS SDK for Ruby V2