ChartQA: Vision-Language Model for Chart Understanding

Ask questions about charts and graphs! This model uses Qwen3-VL-2B fine-tuned with GRPO (Group Relative Policy Optimization) to provide accurate, step-by-step reasoning.

Features

• 📈 Upload any chart or graph image
• 💬 Ask natural language questions
• 🎯 Get step-by-step reasoning + structured answers
• ⚡ Real-time streaming responses

Model

• Base: Qwen3-VL-2B-Thinking
• Training: SFT + GRPO Reinforcement Learning
• Dataset: ChartQA (augmented + converted)

Usage

1. Upload a chart image
2. Type your question
3. Click "Generate Answer"
4. Watch the streaming response!

Examples

• "What is the highest value shown in the chart?"
• "Compare the values between 2020 and 2021."
• "What trend can you observe from this chart?"

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Built with ❤️ using Streamlit & Hugging Face