tutorial on disabling reranker

documentation/tutorial.md

@@ -13,6 +13,7 @@
 1. [Optimizing FAISS for large-scale data](https://github.com/autogluon/autogluon-rag/tree/main/documentation/tutorials/vector_db/optimizing_faiss.md)
 
 ## Retriever Module
+1. [Disable the reranker and only use embedding model for retrieval](https://github.com/autogluon/autogluon-rag/tree/main/documentation/tutorials/retriever/disable_reranker.md)
 
 ## Generator Module
 1. [Change generator after initializing RAG pipeline](https://github.com/autogluon/autogluon-rag/tree/main/documentation/tutorials/generator/change_generator.md)

documentation/tutorials/retriever/disable_reranker.md

@@ -0,0 +1,20 @@
+## This is a tutorial on disabling the reranker and only use embedding model for retrieval.
+
+The reranker is an optional sub-module that can be used within the retriever module to rerank the retrieved text from the Vector DB.
+There are two ways to configure the reranker.
+
+One way is through the config file:
+```python
+retriever:
+    use_reranker: true
+    reranker_model_name: BAAI/bge-large-en
+    reranker_model_platform: huggingface
+    reranker_model_platform_args: null
+```
+
+The alternate way is through code:
+Refer to [this](https://github.com/autogluon/autogluon-rag/tree/main/documentation/tutorials/general/setting_parameters.md) tutorial on how to modify arguments through code after instantiating an  `AutoGluonRAG` object.
+```python
+agrag.use_reranker = False
+agrag.initialize_retriever_module()
+```