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Add HuggingFace Spaces metadata to README.md
Browse filesCo-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
README.md
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# Verification-Driven Hallucination Firewall (VDHF)
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A modular Python system that verifies RAG (Retrieval-Augmented Generation) outputs before delivering them to users, preventing AI hallucinations.
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---
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## 📋 Prerequisites
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### Required
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1. **Python 3.9+** - Download from https://www.python.org/downloads/
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- ⚠️ During installation, check **"Add Python to PATH"**
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### Optional (for full LLM features)
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2. **OpenAI API Key** - Get from https://platform.openai.com/api-keys
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- Without this, the system uses mock generation for testing
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---
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## 🚀 Quick Start
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### Step 1: Install Dependencies
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```powershell
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cd "c:\Users\HP\Desktop\Hallucination Firewall"
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pip install -r requirements.txt
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```
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### Step 2: (Optional) Configure API Key
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```powershell
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copy .env.example .env
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# Edit .env and add your OpenAI API key
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```
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### Step 3: Run the System
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```powershell
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python main.py
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```
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---
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## 📂 Project Structure
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```
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Hallucination Firewall/
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│
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├── config.py # Configuration (thresholds, models)
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├── ingestion.py # Document loading (PDF, TXT, DOCX)
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├── embeddings.py # Sentence-BERT embeddings + ChromaDB
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├── retriever.py # Semantic search for evidence
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├── generator.py # LLM response generation
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├── claim_extractor.py # Extract factual claims from text
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├── verifier.py # Verify claims using similarity + NLI
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├── firewall.py # Decision engine (pass/block)
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├── prompt_refiner.py # Regenerate safer responses
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├── main.py # Main pipeline + interactive CLI
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│
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├── requirements.txt # Python dependencies
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├── .env.example # API key template
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│
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├── sample_docs/
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│ └── sample.txt # Sample test documents
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│
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└── tests/
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└── test_pipeline.py # Unit tests
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```
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---
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## 🔧 How It Works
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```
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┌─────────────┐ ┌──────────────┐ ┌─────────────────┐
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│ User Query │───▶│ Retrieve │───▶│ Generate Answer │
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└─────────────┘ │ Evidence │ └────────┬────────┘
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└──────────────┘ │
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▼
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┌─────────────┐ ┌──────────────┐ ┌─────────────────┐
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│ Output │◀───│ Firewall │◀───│ Extract Claims │
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│ (Verified) │ │ Decision │ │ & Verify │
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└─────────────┘ └──────────────┘ └─────────────────┘
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│
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│ If fails threshold
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▼
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┌──────────────┐
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│ Refine & │
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│ Regenerate │
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└──────────────┘
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```
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### Pipeline Steps:
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1. **Ingest Documents** → Load PDFs/TXT files into vector database
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2. **Retrieve Evidence** → Find relevant chunks for user query
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3. **Generate Response** → LLM creates initial answer
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4. **Extract Claims** → Break response into atomic factual statements
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5. **Verify Claims** → Check each claim against evidence
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6. **Firewall Decision** → Pass if ≥80% claims verified
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7. **Regenerate** → If failed, refine prompt and try again
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---
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|---------|-------------|
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| `/ingest <path>` | Load documents from file or folder |
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| `/clear` | Clear all documents from memory |
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| `/count` | Show number of document chunks |
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| `/quit` | Exit the program |
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**Example session:**
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```
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You: /ingest sample_docs
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Ingested sample_docs: 5 chunks total
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You: When was Python released?
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[Processing...]
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✓ VERIFIED - Support Ratio: 100%
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Response: Python was first released in 1991 by Guido van Rossum.
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```
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---
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## ⚙️ Configuration
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Edit `config.py` to customize:
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| Setting | Default | Description |
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|---------|---------|-------------|
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| `SIMILARITY_THRESHOLD` | 0.75 | Minimum similarity for claim-evidence match |
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| `FIREWALL_THRESHOLD` | 0.8 | Minimum % of claims that must be verified |
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| `TOP_K_RETRIEVAL` | 7 | Number of evidence chunks to retrieve |
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| `CHUNK_SIZE` | 1000 | Characters per document chunk |
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| `LLM_MODEL` | gpt-3.5-turbo | OpenAI model to use |
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---
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### Step 4: Run Interactive Querying
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To interactively query the system and see verification results:
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```powershell
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python run.py --demo
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```
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---
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## 🧪 Running Tests
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```powershell
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python -m pytest tests/test_pipeline.py -v
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```
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---
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#
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```
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============================================================
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VDHF Pipeline Result
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============================================================
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Status: ✓ VERIFIED
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Support Ratio: 100.00%
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Claims: 2/2 supported
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Regeneration Attempts: 0
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============================================================
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Response:
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Python was released in 1991. It was created by Guido van Rossum.
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============================================================
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```
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|------|-----------|------------|
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| Python 3.9+ | ✅ Yes | https://python.org/downloads |
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| Documents to verify against | ✅ Yes | Your PDFs, TXT files |
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| OpenAI API Key | ❌ Optional | https://platform.openai.com/api-keys |
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##
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##
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Two-step verification:
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1. **Semantic Similarity**: Cosine similarity ≥ 0.75
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2. **NLI Entailment**: Evidence must logically support claim
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---
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title: Hallucination Firewall
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emoji: 🛡️
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colorFrom: blue
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colorTo: indigo
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sdk: docker
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pinned: false
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---
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# Verification-Driven Hallucination Firewall (VDHF)
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A modular Python system that verifies RAG (Retrieval-Augmented Generation) outputs before delivering them to users, preventing AI hallucinations.
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Upload documents (TXT, PDF, DOCX, Excel, CSV), ask questions, and get verified answers with every claim checked against your content.
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## How It Works
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1. **Upload Documents** - Upload any document to the system
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2. **Ask Questions** - Query your uploaded content
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3. **Claim Extraction** - Every factual claim in the response is identified
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4. **Verification** - Each claim is checked against your uploaded data
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5. **Firewall Decision** - Response is marked as Verified, Partially Verified, or Hallucinated
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6. **Regeneration** - If needed, a safer response is generated
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## Features
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- Excel/CSV direct data analysis (no ML models needed)
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- Student comparison and filter queries
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- Claim verification against uploaded data
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- Hallucination detection for non-existent records
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- Groq LLM-powered analysis for complex questions
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- Beautiful React frontend with tabular response rendering
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## Tech Stack
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- **Backend**: FastAPI + Python
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- **Frontend**: React + Vite + Tailwind CSS
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- **ML**: Sentence-BERT, DeBERTa NLI
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- **Vector DB**: ChromaDB
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- **LLM**: Groq API
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