ForkPilot: Self-Evolving Policy for Retrospective Search in Long-Horizon Agents
Xinyue Zeng, Shivam Shandilya, Guilherme Potje, Leonardo Nunes, Rakshanda Agarwal, Ranveer Chandra, Emre Kiciman, Dawei Zhou, Tusher Chakraborty
October 2026
Tusher Chakraborty
Principal Research Manager
Publications
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Diagnosing Capability Gaps in Fine-Tuning Data
Saeid Asgari Taghanaki, Raksha Agarwal, Bruce Sun, Rohan Jha, Elias Stengel-Eskin, Sara Malvar, Rui Ying, Yifei Xu, Guilherme Potje, Tusher Chakraborty, Leonardo Nunes, Ranveer Chandra, Emre Kiciman
April 2026
arXiv | April 2026
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SibylSense: Adaptive Rubric Learning via Memory Tuning and Adversarial Probing
Yifei Xu, Guilherme Potje, Shivam Shandilya, Tiancheng Yuan, Leonardo de Oliveira Nunes, Rakshanda Agarwal, Saeid Asgari, Adam Atkinson, Songwu Lu, Emre Kiciman, Ranveer Chandra, Tusher Chakraborty
February 2026
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Orchestration for Domain-specific Edge-Cloud Language Models
Prasoon Patidar, Alex Crown, Kevin Hsieh, Yifei Xu, Tusher Chakraborty, Ranveer Chandra, Yuvraj Agarwal
July 2025
Arxiv | July 2025
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Direct Reasoning Optimization: Constrained RL with Token-Level Dense Reward and Rubric-Gated Constraints for Open-ended Tasks
Yifei Xu, Tusher Chakraborty, Srinagesh Sharma, Leonardo Nunes, Swati Sharma, Kate Drakos Demopulos, Emre Kiciman, Songwu Lu, Ranveer Chandra
Arxiv | June 2025
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Direct Reasoning Optimization: LLMs Can Reward And Refine Their Own Reasoning for Open-Ended Tasks
Yi-Fei Xu, Tusher Chakraborty, Srinagesh Sharma, Leonardo Nunes, Emre Kıcıman, Songwu Lu, Ranveer Chandra
ArXiv | June 2025, Vol abs/2506.13351
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RLTHF: Targeted Human Feedback for LLM Alignment
Yifei Xu, Tusher Chakraborty, Emre Kiciman, Bibek Aryal, Eduardo Rodrigues, Srinagesh Sharma, Roberto Estevao, Maria Angels de Luis Balaguer, Jessica Wolk, Rafael Padilha, Leonardo Nunes, Shobana Balakrishna, Songwu Lu, Ranveer Chandra
ICML'25 | February 2025
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CosMAC: Constellation-Aware Medium Access and Scheuduling for IoT Satellites
Jayanth Shenoy, Om Chabra, Tusher Chakraborty, Suraj Jog, Deepak Vasisth, Ranveer Chandra
ACM MobiCom | November 2024
Best Community Paper Award
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Spectrumize: Spectrum-efficient Satellite Networks for the Internet of Things
Vaibhav Singh, Tusher Chakraborty, Suraj Jog, Om Chabra, Deepak Vasisht , Ranveer Chandra
USENIX NSDI | April 2024
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Re-Inventing the Food Supply Chain with IoT: A Data-Driven Solution to Reduce Food Loss
Vaishnavi Ranganathan, Peeyush Kumar, Upinder Kaur, Sarah Li, Tusher Chakraborty, Ranveer Chandra
IEEE Internet of Things Magazine | May 2022
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Whisper: IoT in the TV White Space Spectrum
Tusher Chakraborty, Heping Shi, Zerina Kapetanovic, Bodhi Priyantha, Deepak Vasisht, Andrew Nelson, Parag Pandit, Prasad Pillai, Yaswant Chabria, Binh Vu, Ranveer Chandra
USENIX NSDI 2022 | March 2022
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Democratizing Data-Driven Agriculture Using Affordable Hardware
Ranveer Chandra, Swami Manohar, Tusher Chakraborty, Jian Ding, Zerina Kapetanovic, Peeyush Kumar, Deepak Vasisht
IEEE Micro | January 2022, Vol 42(1): pp. 69-77
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FarmBeats: Improving Farm Productivity Using Data-Driven Agriculture
Zerina Kapetanovic, Ranveer Chandra, Tusher Chakraborty, Andrew Nelson
SIAM News | July 2019
https://sinews.siam.org/Details-Page/farmbeats-improving-farm-productivity-using-data-driven-agriculture
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Fall-curve: A novel primitive for IoT Fault Detection and Isolation
Tusher Chakraborty, Akshay Nambi, Ranveer Chandra, Rahul Sharma, Swami Manohar, Zerina Kapetanovic, Jonathan Appavoo
ACM SenSys | November 2018
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Sensor Identification and Fault Detection in IoT Systems
Tusher Chakraborty, Akshay Nambi, Rahul Sharma, Ranveer Chandra, Swami Manohar, Zerina Kapetanovic
ACM SenSys (Demo) | November 2018
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ForkPilot: Self-Evolving Policy for Retrospective Search in Long-Horizon Agents
Xinyue Zeng, Shivam Shandilya, Guilherme Potje, Leonardo Nunes, Rakshanda Agarwal, Ranveer Chandra, Emre Kiciman, Dawei Zhou, Tusher Chakraborty
October 2026
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Diagnosing Capability Gaps in Fine-Tuning Data
Saeid Asgari Taghanaki, Raksha Agarwal, Bruce Sun, Rohan Jha, Elias Stengel-Eskin, Sara Malvar, Rui Ying, Yifei Xu, Guilherme Potje, Tusher Chakraborty, Leonardo Nunes, Ranveer Chandra, Emre Kiciman
April 2026
arXiv | April 2026
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SibylSense: Adaptive Rubric Learning via Memory Tuning and Adversarial Probing
Yifei Xu, Guilherme Potje, Shivam Shandilya, Tiancheng Yuan, Leonardo de Oliveira Nunes, Rakshanda Agarwal, Saeid Asgari, Adam Atkinson, Songwu Lu, Emre Kiciman, Ranveer Chandra, Tusher Chakraborty
February 2026
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Orchestration for Domain-specific Edge-Cloud Language Models
Prasoon Patidar, Alex Crown, Kevin Hsieh, Yifei Xu, Tusher Chakraborty, Ranveer Chandra, Yuvraj Agarwal
July 2025
Arxiv | July 2025
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Direct Reasoning Optimization: Constrained RL with Token-Level Dense Reward and Rubric-Gated Constraints for Open-ended Tasks
Yifei Xu, Tusher Chakraborty, Srinagesh Sharma, Leonardo Nunes, Swati Sharma, Kate Drakos Demopulos, Emre Kiciman, Songwu Lu, Ranveer Chandra
Arxiv | June 2025
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Direct Reasoning Optimization: LLMs Can Reward And Refine Their Own Reasoning for Open-Ended Tasks
Yi-Fei Xu, Tusher Chakraborty, Srinagesh Sharma, Leonardo Nunes, Emre Kıcıman, Songwu Lu, Ranveer Chandra
ArXiv | June 2025, Vol abs/2506.13351
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RLTHF: Targeted Human Feedback for LLM Alignment
Yifei Xu, Tusher Chakraborty, Emre Kiciman, Bibek Aryal, Eduardo Rodrigues, Srinagesh Sharma, Roberto Estevao, Maria Angels de Luis Balaguer, Jessica Wolk, Rafael Padilha, Leonardo Nunes, Shobana Balakrishna, Songwu Lu, Ranveer Chandra
ICML'25 | February 2025
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Re-Inventing the Food Supply Chain with IoT: A Data-Driven Solution to Reduce Food Loss
Vaishnavi Ranganathan, Peeyush Kumar, Upinder Kaur, Sarah Li, Tusher Chakraborty, Ranveer Chandra
IEEE Internet of Things Magazine | May 2022
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CosMAC: Constellation-Aware Medium Access and Scheuduling for IoT Satellites
Jayanth Shenoy, Om Chabra, Tusher Chakraborty, Suraj Jog, Deepak Vasisth, Ranveer Chandra
ACM MobiCom | November 2024
Best Community Paper Award
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Spectrumize: Spectrum-efficient Satellite Networks for the Internet of Things
Vaibhav Singh, Tusher Chakraborty, Suraj Jog, Om Chabra, Deepak Vasisht , Ranveer Chandra
USENIX NSDI | April 2024
-
Re-Inventing the Food Supply Chain with IoT: A Data-Driven Solution to Reduce Food Loss
Vaishnavi Ranganathan, Peeyush Kumar, Upinder Kaur, Sarah Li, Tusher Chakraborty, Ranveer Chandra
IEEE Internet of Things Magazine | May 2022
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Whisper: IoT in the TV White Space Spectrum
Tusher Chakraborty, Heping Shi, Zerina Kapetanovic, Bodhi Priyantha, Deepak Vasisht, Andrew Nelson, Parag Pandit, Prasad Pillai, Yaswant Chabria, Binh Vu, Ranveer Chandra
USENIX NSDI 2022 | March 2022
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Democratizing Data-Driven Agriculture Using Affordable Hardware
Ranveer Chandra, Swami Manohar, Tusher Chakraborty, Jian Ding, Zerina Kapetanovic, Peeyush Kumar, Deepak Vasisht
IEEE Micro | January 2022, Vol 42(1): pp. 69-77
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FarmBeats: Improving Farm Productivity Using Data-Driven Agriculture
Zerina Kapetanovic, Ranveer Chandra, Tusher Chakraborty, Andrew Nelson
SIAM News | July 2019
https://sinews.siam.org/Details-Page/farmbeats-improving-farm-productivity-using-data-driven-agriculture
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Fall-curve: A novel primitive for IoT Fault Detection and Isolation
Tusher Chakraborty, Akshay Nambi, Ranveer Chandra, Rahul Sharma, Swami Manohar, Zerina Kapetanovic, Jonathan Appavoo
ACM SenSys | November 2018
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Sensor Identification and Fault Detection in IoT Systems
Tusher Chakraborty, Akshay Nambi, Rahul Sharma, Ranveer Chandra, Swami Manohar, Zerina Kapetanovic
ACM SenSys (Demo) | November 2018
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Re-Inventing the Food Supply Chain with IoT: A Data-Driven Solution to Reduce Food Loss
Vaishnavi Ranganathan, Peeyush Kumar, Upinder Kaur, Sarah Li, Tusher Chakraborty, Ranveer Chandra
IEEE Internet of Things Magazine | May 2022
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Re-Inventing the Food Supply Chain with IoT: A Data-Driven Solution to Reduce Food Loss
Vaishnavi Ranganathan, Peeyush Kumar, Upinder Kaur, Sarah Li, Tusher Chakraborty, Ranveer Chandra
IEEE Internet of Things Magazine | May 2022
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Fall-curve: A novel primitive for IoT Fault Detection and Isolation
Tusher Chakraborty, Akshay Nambi, Ranveer Chandra, Rahul Sharma, Swami Manohar, Zerina Kapetanovic, Jonathan Appavoo
ACM SenSys | November 2018
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Sensor Identification and Fault Detection in IoT Systems
Tusher Chakraborty, Akshay Nambi, Rahul Sharma, Ranveer Chandra, Swami Manohar, Zerina Kapetanovic
ACM SenSys (Demo) | November 2018
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ForkPilot: Self-Evolving Policy for Retrospective Search in Long-Horizon Agents
Xinyue Zeng, Shivam Shandilya, Guilherme Potje, Leonardo Nunes, Rakshanda Agarwal, Ranveer Chandra, Emre Kiciman, Dawei Zhou, Tusher Chakraborty
October 2026
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SibylSense: Adaptive Rubric Learning via Memory Tuning and Adversarial Probing
Yifei Xu, Guilherme Potje, Shivam Shandilya, Tiancheng Yuan, Leonardo de Oliveira Nunes, Rakshanda Agarwal, Saeid Asgari, Adam Atkinson, Songwu Lu, Emre Kiciman, Ranveer Chandra, Tusher Chakraborty
February 2026
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Diagnosing Capability Gaps in Fine-Tuning Data
Saeid Asgari Taghanaki, Raksha Agarwal, Bruce Sun, Rohan Jha, Elias Stengel-Eskin, Sara Malvar, Rui Ying, Yifei Xu, Guilherme Potje, Tusher Chakraborty, Leonardo Nunes, Ranveer Chandra, Emre Kiciman
April 2026
arXiv | April 2026
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Orchestration for Domain-specific Edge-Cloud Language Models
Prasoon Patidar, Alex Crown, Kevin Hsieh, Yifei Xu, Tusher Chakraborty, Ranveer Chandra, Yuvraj Agarwal
July 2025
Arxiv | July 2025
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Direct Reasoning Optimization: Constrained RL with Token-Level Dense Reward and Rubric-Gated Constraints for Open-ended Tasks
Yifei Xu, Tusher Chakraborty, Srinagesh Sharma, Leonardo Nunes, Swati Sharma, Kate Drakos Demopulos, Emre Kiciman, Songwu Lu, Ranveer Chandra
Arxiv | June 2025
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RLTHF: Targeted Human Feedback for LLM Alignment
Yifei Xu, Tusher Chakraborty, Emre Kiciman, Bibek Aryal, Eduardo Rodrigues, Srinagesh Sharma, Roberto Estevao, Maria Angels de Luis Balaguer, Jessica Wolk, Rafael Padilha, Leonardo Nunes, Shobana Balakrishna, Songwu Lu, Ranveer Chandra
ICML'25 | February 2025
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CosMAC: Constellation-Aware Medium Access and Scheuduling for IoT Satellites
Jayanth Shenoy, Om Chabra, Tusher Chakraborty, Suraj Jog, Deepak Vasisth, Ranveer Chandra
ACM MobiCom | November 2024
Best Community Paper Award
-
Spectrumize: Spectrum-efficient Satellite Networks for the Internet of Things
Vaibhav Singh, Tusher Chakraborty, Suraj Jog, Om Chabra, Deepak Vasisht , Ranveer Chandra
USENIX NSDI | April 2024
-
Whisper: IoT in the TV White Space Spectrum
Tusher Chakraborty, Heping Shi, Zerina Kapetanovic, Bodhi Priyantha, Deepak Vasisht, Andrew Nelson, Parag Pandit, Prasad Pillai, Yaswant Chabria, Binh Vu, Ranveer Chandra
USENIX NSDI 2022 | March 2022
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Fall-curve: A novel primitive for IoT Fault Detection and Isolation
Tusher Chakraborty, Akshay Nambi, Ranveer Chandra, Rahul Sharma, Swami Manohar, Zerina Kapetanovic, Jonathan Appavoo
ACM SenSys | November 2018
-
Sensor Identification and Fault Detection in IoT Systems
Tusher Chakraborty, Akshay Nambi, Rahul Sharma, Ranveer Chandra, Swami Manohar, Zerina Kapetanovic
ACM SenSys (Demo) | November 2018
-
-
-
Direct Reasoning Optimization: LLMs Can Reward And Refine Their Own Reasoning for Open-Ended Tasks
Yi-Fei Xu, Tusher Chakraborty, Srinagesh Sharma, Leonardo Nunes, Emre Kıcıman, Songwu Lu, Ranveer Chandra
ArXiv | June 2025, Vol abs/2506.13351
-
Re-Inventing the Food Supply Chain with IoT: A Data-Driven Solution to Reduce Food Loss
Vaishnavi Ranganathan, Peeyush Kumar, Upinder Kaur, Sarah Li, Tusher Chakraborty, Ranveer Chandra
IEEE Internet of Things Magazine | May 2022
-
Democratizing Data-Driven Agriculture Using Affordable Hardware
Ranveer Chandra, Swami Manohar, Tusher Chakraborty, Jian Ding, Zerina Kapetanovic, Peeyush Kumar, Deepak Vasisht
IEEE Micro | January 2022, Vol 42(1): pp. 69-77
-
FarmBeats: Improving Farm Productivity Using Data-Driven Agriculture
Zerina Kapetanovic, Ranveer Chandra, Tusher Chakraborty, Andrew Nelson
SIAM News | July 2019
https://sinews.siam.org/Details-Page/farmbeats-improving-farm-productivity-using-data-driven-agriculture
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