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LLM Analysis and Evaluation of LangChain and OpenAI RAG using Arize-Phoenix
Latest   Machine Learning

LLM Analysis and Evaluation of LangChain and OpenAI RAG using Arize-Phoenix

Last Updated on September 27, 2024 by Editorial Team

Author(s): Steve George

Originally published on Towards AI.

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LLM workflows based on retrieval-augmented generation (RAG) are currently being used at scale in production environments. While token usage and distribution are tracked at the API level, it is highly recommended that these models be analyzed and evaluated. Obtaining ground truth values for evaluation may not always be feasible due to the enormous and exhausting nature of the task. Therefore, in real-world scenarios, another LLM model is often used to evaluate the workflow. This approach is called β€œLLM-as-a-judge” and is one of the most widely used methods.

Arize is one of the leading monitoring tools from both MLOps and LLMOps perspectives. Phoenix, an open-source observability library developed by Arize AI, is designed for experimentation, evaluation, and model troubleshooting.

In this article, we will leverage the Phoenix library to analyze and evaluate a LangChain RAG workflow.

Let’s start with installing all the required libraries.

!pip install langchain langchain-community langchain-openai openai "arize-phoenix[evals]" nest-asyncio chromadb

For content, we can create a dummy Dataframe to simulate the data. However, you’re encouraged to use the sample dataset provided by Arize or explore the extensive datasets available on Hugging Face, which offer more comprehensive real-world data for better analysis and… Read the full blog for free on Medium.

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