# HPOObjective
<a name="API_HPOObjective"></a>

The metric to optimize during hyperparameter optimization (HPO).

**Note**  
Amazon Personalize doesn't support configuring the `hpoObjective` at this time.

## Contents
<a name="API_HPOObjective_Contents"></a>

 ** metricName **   <a name="personalize-Type-HPOObjective-metricName"></a>
The name of the metric.  
Type: String  
Length Constraints: Maximum length of 256.  
Required: No

 ** metricRegex **   <a name="personalize-Type-HPOObjective-metricRegex"></a>
A regular expression for finding the metric in the training job logs.  
Type: String  
Length Constraints: Maximum length of 256.  
Required: No

 ** type **   <a name="personalize-Type-HPOObjective-type"></a>
The type of the metric. Valid values are `Maximize` and `Minimize`.  
Type: String  
Length Constraints: Maximum length of 256.  
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/personalize-2018-05-22/HPOObjective) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/personalize-2018-05-22/HPOObjective) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/personalize-2018-05-22/HPOObjective)