Summary

The web content describes how to implement a Retrieval Augmented Generation (RAG) Q&A chatbot using LlamaIndex and Wikipedia, specifically focusing on the Star Wars franchise.

Abstract

The blog post is part of a series on Generative AI, detailing the use of the RAG pattern to enhance language model outputs with specific data sources. It provides instructions for building a conversational chatbot that retrieves information from Wikipedia, specifically about the Star Wars franchise. The post outlines the process of using a WikipediaReader from LlamaIndex to parse and vectorize content for improved context and relevance in the chatbot's responses. The author guides the reader through the code, highlighting the initialization of the reader, the indexing process, and how to run the chatbot using Streamlit. The conclusion emphasizes the ease of implementing complex RAG applications with LlamaIndex and encourages reader feedback and interaction with the complete code available on GitHub.

Opinions

The author believes that the RAG pattern significantly enhances the content and context provided by language models.
The blog assumes familiarity with the author's previous work, suggesting that readers should refer to earlier posts for comprehensive explanations.
There is an emphasis on the simplicity and effectiveness of using LlamaIndex with Wikipedia as a data source for building RAG applications.
The author expresses a commitment to exploring further RAG patterns with LlamaIndex in future blog posts.
By inviting feedback and comments, the author indicates a willingness to engage with the community and learn from their insights.

Generative AI Series

Retrieval Augmented Generation(RAG) with LlamaIndex with Wikipedia

Implement the RAG technique using Langchain, and LlamaIndex for conversational chatbot on Wikipedia.

This blog is an ongoing series on GenerativeAI and is a continuation of the previous blog, which talks about the RAG pattern and how RAG is used to augment prompts and enhance the content and context of an LLM, with specific data.

In this blog, we will build a Q&A chatbot for content fetched from Wikipedia on Star Wars Franchise. We will be using the LlamaIndex reader WikipediaReader

Please go through the following blogs

Let's walk through the code. I won’t be walking through all the code, as it is very similar to what I had published and explained in my previous blogs. I will just call out specific changes made.

The above code is very similar to what we had done before, except that we are importing a reader WikipediaReader We will use this to parse a specific topic through Wikipedia (Star Wars). This content will be chunked, indexed, and stored as vectors. Please refer to my previous blogs for details.

In the above code, we are initializing the WikipediaReader and providing the topic “Star Wards Movie” and creating a vector store, with that documents

The following code is very similar to what we did in the previous blogs. Please refer to those blogs for explanations

Let's run this with streamlit run wiki_chat.py

You should see a screen like below, where you can chat with the content. In the below screenshot, you can see the output

On the console, I am also printing (pprint_response) the top 2 similar responses.

Conclusion

There you go…As you can see this is super easy to implement complex RAG applications using LlamaIndex, which can ingest content from Wikipedia (and other sources). Please leave your feedback, and comments. I always learn from hearing from you all…

you can find the complete code in my GitHub here

I think I blogged enough of various document sources, I will be going a little deeper on other RAG patterns with LlamaIndex in my future blogs. Until then, stay safe and have fun… ;-)