Publications

2025

1. ICLR

   

   ORSO: Accelerating Reward Design via Online Reward Selection and Policy Optimization

   Chen Bo Calvin Zhang, Zhang-Wei Hong, Aldo Pacchiano, and Pulkit Agrawal

   In The Thirteenth International Conference on Learning Representations, 2025

   Bib HTML

   @inproceedings{zhang2025orso,
     title = {ORSO: Accelerating Reward Design via Online Reward Selection and Policy Optimization},
     author = {Zhang, Chen Bo Calvin and Hong, Zhang-Wei and Pacchiano, Aldo and Agrawal, Pulkit},
     booktitle = {The Thirteenth International Conference on Learning Representations},
     year = {2025},
   }

2. arXiv

   

   Humanity’s Last Exam

   Long Phan, Alice Gatti, Ziwen Han, Nathaniel Li, Josephina Hu, Hugh Zhang, Chen Bo Calvin Zhang, Mohamed Shaaban, John Ling, and 2 more authors

   arXiv preprint arXiv:2501.14249, 2025

   Bib HTML

   @article{phan2025humanity,
     title = {Humanity's Last Exam},
     author = {Phan, Long and Gatti, Alice and Han, Ziwen and Li, Nathaniel and Hu, Josephina and Zhang, Hugh and Zhang, Chen Bo Calvin and Shaaban, Mohamed and Ling, John and Shi, Sean and others},
     journal = {arXiv preprint arXiv:2501.14249},
     year = {2025},
   }

3. arXiv

   

   SHADE-Arena: Evaluating Sabotage and Monitoring in LLM Agents

   Jonathan Kutasov, Yuqi Sun, Paul Colognese, Teun Weij, Linda Petrini, Chen Bo Calvin Zhang, John Hughes, Xiang Deng, Henry Sleight, and 3 more authors

   arXiv preprint arXiv:2506.15740, 2025

   Bib HTML

   @article{kutasov2025shade,
     title = {SHADE-Arena: Evaluating Sabotage and Monitoring in LLM Agents},
     author = {Kutasov, Jonathan and Sun, Yuqi and Colognese, Paul and van der Weij, Teun and Petrini, Linda and Zhang, Chen Bo Calvin and Hughes, John and Deng, Xiang and Sleight, Henry and Tracy, Tyler and Shlegeris, Buck and Benton, Joe},
     journal = {arXiv preprint arXiv:2506.15740},
     year = {2025},
   }

2023

1. ICML

   

   HIP-RL: Hallucinated Inputs for Preference-based Reinforcement Learning in Continuous Domains

   Chen Bo Calvin Zhang, and Giorgia Ramponi

   In ICML 2023 Workshop: The Many Facets of Preference-Based Learning, 2023

   Bib

   @inproceedings{zhang2023hip,
     title = {HIP-RL: Hallucinated Inputs for Preference-based Reinforcement Learning in Continuous Domains},
     author = {Zhang, Chen Bo Calvin and Ramponi, Giorgia},
     booktitle = {ICML 2023 Workshop: The Many Facets of Preference-Based Learning},
     year = {2023},
   }

2. arXiv

   

   Zero-Shot Transfer in Imitation Learning

   Alvaro Cauderan, Gauthier Boeshertz, Florian Schwarb, and Calvin Zhang

   arXiv preprint arXiv:2310.06710, 2023

   Bib

   @article{cauderan2023zero,
     title = {Zero-Shot Transfer in Imitation Learning},
     author = {Cauderan, Alvaro and Boeshertz, Gauthier and Schwarb, Florian and Zhang, Calvin},
     journal = {arXiv preprint arXiv:2310.06710},
     year = {2023},
   }