README.md

---
license: cc-by-4.0
task_categories:
- text-to-3d
- other
language:
- en
size_categories:
- 100K<n<1M
tags:
- cad-function
- text-to-cad
- dataset
- annotation
---

# Req2CAD: Bridging Functional Requirements and Parametric CAD Models to Support Conceptual 3D Design

## 📌 Dataset Summary

The **Req2CAD** dataset is constructed on top of the **Text2CAD** dataset, which itself extends **DeepCAD** with textual annotations and rendered images. Building upon these resources, Req2CAD further enriches each CAD component with **functional annotations**, establishing a direct mapping between functional requirements and structural design representations.

Each sample contains the following core fields:

- **uid**: Unique identifier, consistent with DeepCAD and Text2CAD  
- **function_description**: Natural language descriptions of CAD component functions  
- **function_keywords**: Structured function labels in the form of *verb + object*, extracted from function descriptions  

The function descriptions are generated by a VLM, **Qwen2.5-VL-7B-Instruct**, based on the input multi-view rendered images of CAD components, and the function keywords are extracted from the function descriptions by an LLM, **Qwen3-14B**.

The multi-view rendered images of CAD components can be downloaded from the [Text2CAD](https://huggingface.co/datasets/SadilKhan/Text2CAD) dataset, and the parametric CAD representations and construction sequences can be downloaded from the [DeepCAD](https://github.com/rundiwu/DeepCAD) dataset.

## 📜 License

This dataset is released under the **CC-BY-4.0** license.

<!-- ---

## 📚 Citation

If you use this dataset, please cite:

```bibtex
@dataset{jing2026_fskb,
  title     = {Function--Structure Knowledge Base for Conceptual CAD Design},
  author    = {Jing, Qianzhi and collaborators},
  year      = {2026},
  publisher = {Hugging Face}
}
 -->