Update README.md

README.md

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 app_file: app.py
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+# 🧠 Prompt Optimization Tool using Generative AI
+
+A production-ready **GenAI application** that automatically improves user prompts, evaluates multiple prompt variants, and selects the best-performing one using an intelligent scoring framework.
+
+This project demonstrates **modern prompt engineering, LLM integration, and automated evaluation** in a real-world deployed system.
+
+---
+
+## 🚀 Features
+
+- ✨ Generates multiple **optimized prompt variants**
+- 🤖 Uses a **Large Language Model (LLM)** to produce responses
+- 📊 Automatically **evaluates outputs** using:
+  - Semantic similarity
+  - Conciseness
+  - LLM-based judgment
+- 🏆 Selects the **best prompt** automatically
+- 🌐 Interactive **Gradio web interface**
+- 🔐 Secure token handling using **environment variables**
+- ☁️ Deployable on **Hugging Face Spaces**
+
+---
+
+## 🏗️ System Architecture
+
+```
+User Input
+   ↓
+Prompt Variant Generator
+   ↓
+LLM (Mistral-7B-Instruct)
+   ↓
+Automatic Evaluator
+   ↓
+Scoring Engine
+   ↓
+Best Prompt Selection
+   ↓
+Gradio Web Interface
+```
+
+---
+
+## 🛠️ Tech Stack
+
+| Layer | Technology |
+|------|------------|
+Frontend | Gradio  
+Backend | Python  
+LLM | Mistral-7B-Instruct (Hugging Face Inference API)  
+Evaluation | Sentence Transformers, Scikit-learn  
+Deployment | Hugging Face Spaces  
+Security | Environment variables & HF Secrets  
+
+---
+
+## 📁 Project Structure
+
+```
+.
+├── app.py            # Gradio UI
+├── backend.py       # LLM connection + prompt variant generator
+├── evaluator.py     # Automatic scoring logic
+├── optimizer.py     # Core optimization engine
+├── requirements.txt # Project dependencies
+└── README.md        # Project documentation
+```
+
+---
+
+## ⚙️ Installation (Local / Colab)
+
+### 1️⃣ Clone the repository
+```bash
+git clone <your-repo-url>
+cd prompt-optimization-tool
+```
+
+### 2️⃣ Install dependencies
+```bash
+pip install -r requirements.txt
+```
+
+### 3️⃣ Set Hugging Face token
+
+Create a token at:  
+👉 https://huggingface.co/settings/tokens (Role: **Read**)
+
+Then set it in your environment:
+
+**Linux / Mac**
+```bash
+export HF_TOKEN=hf_your_token_here
+```
+
+**Windows (PowerShell)**
+```powershell
+setx HF_TOKEN "hf_your_token_here"
+```
+
+**Google Colab**
+```python
+import os
+os.environ["HF_TOKEN"] = "hf_your_token_here"
+```
+
+---
+
+## ▶️ Running the App
+
+```bash
+python app.py
+```
+
+Open the link shown in the terminal to use the web interface.
+
+---
+
+## 🌐 Deployment on Hugging Face Spaces
+
+1. Go to: https://huggingface.co/spaces  
+2. Create a new Space → **SDK: Gradio**  
+3. Upload these files:
+   - `app.py`
+   - `backend.py`
+   - `evaluator.py`
+   - `optimizer.py`
+   - `requirements.txt`
+4. Add your token:
+   - Space → **Settings → Repository secrets**
+   ```
+   HF_TOKEN = hf_your_token_here
+   ```
+5. Restart the Space  
+6. Your app is now live 🎉
+
+---
+
+## 🧪 Example Test Cases
+
+### Prompt
+```
+Explain gradient descent
+```
+
+### Reference (optional)
+```
+Gradient descent is an optimization algorithm that minimizes a loss function by iteratively updating parameters in the direction of the negative gradient.
+```
+
+### Output
+- Best optimized prompt  
+- Ranked prompt variants  
+- Model-generated answers  
+- Scores for each variant  
+
+---
+
+## 🔐 Security Notes
+
+- ❌ Never hard-code API keys or tokens
+- ✅ Always use **environment variables** or **Hugging Face secrets**
+- 🔄 Rotate tokens if exposed
+
+---
+
+## 📈 Why this project is unique
+
+Instead of only generating text, this system:
+
+- **Evaluates prompt quality automatically**
+- Uses **LLM-as-a-judge**
+- Applies **semantic similarity scoring**
+- Implements **real optimization logic**
+- Is fully **deployable in production**
+
+This makes it a strong example of **applied Generative AI engineering**.
+
+---
+
+## 🎓 Use Cases
+
+- Prompt engineering research  
+- GenAI tooling  
+- AI assistant improvement  
+- Educational demonstrations  
+- Hackathons & academic projects  
+
+---
+
+## 📄 License
+
+This project is for **educational and research purposes**.  
+You are free to modify and extend it.
+
+---
+
+## 🙌 Acknowledgements
+
+- Hugging Face for the Inference API  
+- Mistral AI for the open-source model  
+- Gradio for the UI framework  
+
+---
+
+## 👨‍💻 Author
+
+**Sharv Mehta**  
+Prompt Optimization Tool using Generative AI  
 
 Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference