community_contributions/chatbot_rag_evaluation/README.md

RAG Chat Evaluator Bot

A lightweight chatbot app that uses LangChain RAG for chunk retrieval, OpenAI for generation, and Gemini for response evaluation.

🔧 Features

• 📚 Retrieval-Augmented Generation (RAG) with LangChain + ChromaDB
• 🤖 Chat interface powered by OpenAI's GPT
• ✅ Gemini-based evaluator checks tone + accuracy
• 🛠️ Records user emails to Google Sheets or CSV fallback

🚀 Setup

1. Clone the repo:

git clone https://github.com/your-username/rag-chat-evaluator-bot.git
cd career-chats

2. Create a virtual environment:

python -m venv venv
source venv/bin/activate  # On Windows: venv\Scripts\activate

3. Install dependencies:

 install -r requirements.txt

2. Keys in .env file:

   GOOGLE_API_KEY=<your-api-key>
   OPENAI_API_KEY=<your-api-key>
   GOOGLE_CREDENTIALS_JSON=<b64encoded-json>