# VectorSearchBedrockRerankingModelConfiguration
<a name="API_VectorSearchBedrockRerankingModelConfiguration"></a>

Configuration for the Amazon Bedrock foundation model used for reranking vector search results. This specifies which model to use and any additional parameters required by the model.

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

 ** modelArn **   <a name="bedrock-Type-VectorSearchBedrockRerankingModelConfiguration-modelArn"></a>
The Amazon Resource Name (ARN) of the foundation model to use for reranking. This model processes the query and search results to determine a more relevant ordering.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 2048.  
Pattern: `(arn:aws(-[^:]+)?:bedrock:[a-z0-9-]{1,20}::foundation-model/(.*))?`   
Required: Yes

 ** additionalModelRequestFields **   <a name="bedrock-Type-VectorSearchBedrockRerankingModelConfiguration-additionalModelRequestFields"></a>
A list of additional fields to include in the model request during reranking. These fields provide extra context or configuration options specific to the selected foundation model.  
Type: String to JSON value map  
Key Length Constraints: Minimum length of 1. Maximum length of 100.  
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/bedrock-2023-04-20/VectorSearchBedrockRerankingModelConfiguration) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/bedrock-2023-04-20/VectorSearchBedrockRerankingModelConfiguration) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/bedrock-2023-04-20/VectorSearchBedrockRerankingModelConfiguration)