Citation

If you use PDHCG-II in your research, please cite the following papers:

Main Paper

@misc{li2026pdhcgiienhancedversionpdhcg,
      title={PDHCG-II: An Enhanced Version of PDHCG for Large-Scale Convex QP},
      author={Hongpei Li and Yicheng Huang and Huikang Liu and Dongdong Ge and Yinyu Ye},
      year={2026},
      eprint={2602.23967},
      archivePrefix={arXiv},
      primaryClass={math.OC},
      url={https://arxiv.org/abs/2602.23967},
}

Original PDHCG Paper

@misc{pdhcg,
  author =        {Y. Huang, W. Zhang, H. Li, H. Liu, D. Ge and Y. Ye},
  publisher =     {INFORMS Journal on Computing},
  title =         {A Restarted Primal-Dual Hybrid Conjugate Gradient Method for Large-Scale Quadratic Programming},
  year =          {2025},
  doi =           {10.1287/ijoc.2024.0983.cd},
  url =           {https://github.com/INFORMSJoC/2024.0983},
  note =          {Available for download at https://github.com/INFORMSJoC/2024.0983},
}

Links

• arXiv Preprint
• INFORMS Journal on Computing
• GitHub Repository

Acknowledgments

This solver is built upon the infrastructure of cuPDLPx (originally developed by Haihao Lu). We gratefully acknowledge this project for providing the high-performance CUDA-C framework for Linear Programming (LP) that serves as the foundation for this QP solver.