update readme file

README.md

@@ -1,8 +1,8 @@
 ---
 title: Ragent Chatbot
-emoji: 📉
+emoji: 🤖
 colorFrom: blue
-colorTo: blue
+colorTo: green
 sdk: gradio
 sdk_version: 5.36.2
 app_file: app.py
@@ -11,4 +11,55 @@ license: mit
 short_description: A Smart AI chatbot powered by RAG and AGENT
 ---
 
-Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference
+## 💬 Ragent Chatbot Preview
+
+![App Preview](figure/thumbnail.png) <!-- Add your app preview image in 'figure/thumbnail.png' -->
+
+# 🤖 Ragent Chatbot
+
+**Ragent Chatbot** is an intelligent **retrieval-augmented agent assistant** powered by LLMs. It combines the power of **RAG (Retrieval-Augmented Generation)** with **agent-based tool reasoning**, allowing it to dynamically respond using retrieved knowledge or external tools depending on the query.
+
+## 🧠 What It Can Do
+
+- Answer user questions by retrieving information from a custom document store
+- You can upload any document and then ask the chatbot to retrieve answer of your question.
+- Automatically decide when to use tools (like search, calculator, etc.)
+- Combine multiple steps of reasoning using the ReAct agent pattern
+
+## 🛠 Features
+
+- 🔎 **Hybrid Search**: Combines vector similarity and BM25 keyword matching for relevant document retrieval
+- 🤖 **ReAct Agent**: Uses tool-based reasoning when knowledge retrieval is insufficient
+- 💬 **Gradio Chat UI**: Simple and responsive chat interface
+- 🧱 **Modular Tools**: Easily extendable with tools like web search, calculator, and custom APIs
+
+## 📦 Stack
+
+- **Frontend:** Gradio
+- **Agent Framework:** LangChain (ReAct agent)
+- **Vector DB:** Qdrant
+- **LLM:** Gemini
+- **Embedding Model:** BAAI/bge-large-en-v1.5
+
+## 🔍 Example Queries
+
+Try asking questions like:
+
+1. **"What is LangChain and how is it different from LlamaIndex?"**  
+2. **"Who is the CEO of OpenAI and when was the company founded?"**  
+3. **"What is 245 * 92?"**  
+
+💡 The chatbot decides whether to use RAG or call tools like calculator or web search automatically!
+
+
+## 🔗 GitHub Repository
+
+You can explore the full source code, Docker setup, and implementation details on GitHub:
+
+[👉 RAGent Chatbot](https://github.com/shafiqul-islam-sumon/ragent-chatbot)
+
+
+## 🚀 Try It Live
+
+> Click **Open in Spaces** to launch the app  
+Or visit: [https://huggingface.co/spaces/shafiqul1357/rag-fashion-recommendation](https://huggingface.co/spaces/shafiqul1357/rag-fashion-recommendation)