Pillar 2 · Reasoning control

Test-time compute

Spend computation where it changes the answer. We treat decoding as a control problem: use rewards, value estimates, lightweight interventions, and multiple models to guide generation without retraining the base model.

Research question

How should a model allocate search, steering, and collaboration at inference time?

We treat decoding as a control problem: use rewards, value estimates, lightweight interventions, and multiple models to guide generation without retraining the base model.

  • Reward-guided decoding
  • Early-step steering
  • Value-guided search
  • Mixture-of-agent decoding

Representative projects

Spend computation where it changes the answer.

Each project connects its central idea with papers, code, datasets, demonstrations, and public explanations.

Representative result from Safety Recovery
Test-time compute2026

Safety Recovery

Small interventions during a few early reasoning steps can redirect unsafe trajectories before they become difficult to recover.

Representative result from Transfer Q★
Test-time compute2024

Transfer Q★

A principled decoding method transfers value guidance across models to improve aligned generation at inference time.

Representative result from Collab
Test-time compute2025

Collab

Controlled decoding combines a mixture of agents so complementary model strengths can guide a single aligned response.

Selected publications

The papers behind the projects.

Browse the full publication database for the broader body of work in reasoning control.

Reasoning controlconference2025

GenARM: Reward Guided Generation with Autoregressive Reward Model for Test-Time Alignment

Yuancheng Xu, Udari Madhushani Sehwag, Alec Koppel, Sicheng Zhu, Bang An, Furong Huang, Sumitra Ganesh

The Thirteenth International Conference on Learning Representations (ICLR), 2025

BibTeX
@inproceedings{xu2025genarmceb1,
  title = {GenARM: Reward Guided Generation with Autoregressive Reward Model for Test-Time Alignment},
  author = {Yuancheng Xu and Udari Madhushani Sehwag and Alec Koppel and Sicheng Zhu and Bang An and Furong Huang and Sumitra Ganesh},
  booktitle = {The Thirteenth International Conference on Learning Representations (ICLR), 2025},
  year = {2025},
  eprint = {2410.08193},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2410.08193},
}
Trustworthy AIconference2026

Safety Recovery in Reasoning Models Is Only a Few Early Steering Steps Away

Soumya Suvra Ghosal, Souradip Chakraborty, Vaibhav Singh, Furong Huang, Dinesh Manocha, Amrit Singh Bedi

Forty-third International Conference on Machine Learning (ICML), 2026

BibTeX
@inproceedings{ghosal2026safetyd87b,
  title = {Safety Recovery in Reasoning Models Is Only a Few Early Steering Steps Away},
  author = {Soumya Suvra Ghosal and Souradip Chakraborty and Vaibhav Singh and Furong Huang and Dinesh Manocha and Amrit Singh Bedi},
  booktitle = {Forty-third International Conference on Machine Learning (ICML), 2026},
  year = {2026},
  eprint = {2602.11096},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2602.11096},
}
Reasoning controlconference2024

Transfer Q-star: Principled Decoding for LLM Alignment

Souradip Chakraborty, Soumya Suvra Ghosal, Ming Yin, Dinesh Manocha, Mengdi Wang, Amrit Bedi, Furong Huang

The Thirty-eighth Annual Conference on Neural Information Processing Systems (NeurIPS), 2024

BibTeX
@inproceedings{chakraborty2024transferf3e1,
  title = {Transfer Q-star: Principled Decoding for LLM Alignment},
  author = {Souradip Chakraborty and Soumya Suvra Ghosal and Ming Yin and Dinesh Manocha and Mengdi Wang and Amrit Bedi and Furong Huang},
  booktitle = {The Thirty-eighth Annual Conference on Neural Information Processing Systems (NeurIPS), 2024},
  year = {2024},
  eprint = {2405.20495},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2405.20495},
}
Reasoning controlconference2025

Collab: Controlled Decoding using Mixture of Agents for LLM Alignment

Souradip Chakraborty, Sujay Bhatt, Udari Madhushani Sehwag, Soumya Suvra Ghosal, Jiahao Qiu, Mengdi Wang, Dinesh Manocha, Furong Huang, Alec Koppel, Sumitra Ganesh

The Thirteenth International Conference on Learning Representations (ICLR), 2025

BibTeX
@inproceedings{chakraborty2025collabbdbe,
  title = {Collab: Controlled Decoding using Mixture of Agents for LLM Alignment},
  author = {Souradip Chakraborty and Sujay Bhatt and Udari Madhushani Sehwag and Soumya Suvra Ghosal and Jiahao Qiu and Mengdi Wang and Dinesh Manocha and Furong Huang and Alec Koppel and Sumitra Ganesh},
  booktitle = {The Thirteenth International Conference on Learning Representations (ICLR), 2025},
  year = {2025},
  eprint = {2503.21720},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2503.21720},
}