Shubhashis Roy Dipta, PhD Researcher in NLP and Multimodal AI

Shubhashis Roy Dipta

PhD Researcher · UMBC

sroydip1@umbc.edu

Resume Google Scholar
Amazon (Alexa AI)
Bellevue, WA
Applied Scientist Intern
Summer 2026
↪︎ Paper: PATH-GRPO[submitted to ICLR]
Causal Dynamics Lab
Remote
Research Scientist (Part-time)
Nov 2025 - Aug 2026
↪︎ Patents: 2 US provisional[Mar 2026]
Amazon (Alexa AI)
Bellevue, WA
Applied Scientist Intern
Summer 2025
↪︎ Paper: PA3[EMNLP main]
Scale AI
San Francisco, CA
Machine Learning Research Intern
Summer 2024
↪︎ Blog: RLHF for Text-to-SQL
See more
University of Maryland, Baltimore County
Ph.D. in Computer Science
May 2023 - Present
Grade: 4.00/4.00
↪︎ Publications: See Here (From 2022)
University of Maryland, Baltimore County
M.Sc. in Computer Science
Spring 2021 - Spring 2023
↪︎ Awards: Phi Kappa Phi
Grade: 4.00/4.00
MSU
Morgan State University
Research Assistant
Jun 2017 - Jun 2020
↪︎ Publications: 4 Journal
UniShopr
Bangladesh
Founder & CTO
2019 - 2021

Upcoming Travel

  • NeurIPS 2026 in Atlanta, GA (Dec 9-13)
  • ICLR 2027 in San Francisco, CA (Apr 26-30)
  • NAACL 2027 in San Francisco, CA (Jun 1-5)
👋 I'm open to meet! Email me to schedule a chat!

I’m a final-year CS Ph.D. researcher at the University of Maryland, Baltimore County, advised by Dr. Frank Ferraro, with research internships at Amazon (Alexa AI; Summer 2025 + 2026) and Scale AI (Summer 2024). I post-train LLMs with RL (GRPO, OPD)GRPO scores a group of sampled answers against each other instead of a learned value model. OPD trains the student on its own generated trajectories.Rock Tokens NeurIPS 2026DAGGER EMNLP 2026GanitLLM ACL 2026DecomposeRL Preprint for reliable multi-turn agents and tool useTool-calling agents that hold a policy across turns and recover when the world does not cooperate.PA3 EMNLP 2026Backdrop PreprintPattern-Aware TIR MathAI @NeurIPS 2025, and build the evaluationsBenchmarks that expose the failures an outcome score hides.AgentCollabBench NeurIPS 2026TRIAGE NeurIPS 2026VC-Inspector ACL 2026 that tell a real gain from a lucky one. My work on agentic LLMs earned a $20K Google Cloud Gemini Academic Program Award (2026).

Graduating Spring 2027 · No visa sponsorship needed · actively seeking Research Scientist roles in LLM post-training and agents. Please reach out if you have an opening.

Recent News (See All)

Oct 28, 2026 🧑‍⚖️ Invited as Area Chair for the ARR October 2026 cycle (NAACL 2027), and reviewed 6 papers for ICLR 2027.
Oct 22, 2026 🌍 New preprint - CulturalRiddles: human-written riddles from 62 cultures and 51 languages. The best models reach only 22% in some cultures. News coverage by Fast Company and Cohere Labs (X, LinkedIn).
Sep 26, 2026 🎉 Three papers accepted at NeurIPS 2026 - Rock Tokens to the main conference, plus TRIAGE and AgentCollabBench to the E&D track.
Sep 6, 2026 🚀 New preprint - OracleZoom: recursive super-resolution to 256× with ground truth only at 4×. A VLM judge prefers it over Chain-of-Zoom 78% of the time. Demo.

Beyond Research

I’ve competed internationally in algorithms and robotics, ranking 8th out of 300+ teams at the 2018 ACM ICPC Asia Dhaka Regional with multiple regional and national placements, reaching the top 70 on Kaggle 🥉 in the Birdcall Identification competition, and placing 9th at the University Rover Challenge 2015 (Utah, USA) and 22nd at the European Rover Challenge 2016 (Poland).

Before the PhD, I also founded UniShopr (2019-2021), a cross-border e-commerce platform serving consumers in Bangladesh.

Featured Publications

A few papers that best represent my work. See all publications

  1. OracleZoom: On-Policy Self-Distillation Inspired Reference-Constrained Recursive Image Super Resolution
    Under review
    OracleZoom: On-Policy Self-Distillation Inspired Reference-Constrained Recursive Image Super Resolution
    Shubhashis Roy Dipta†, Sourajit Saha†, Shaswati Saha, and 1 more author
    † Equal contribution
    arXiv Code 🤗 Hugging Face Website Demo
  2. DecomposeRL: Learning to Ask Useful, Informative, and Diverse Questions for Semi-Supervised, Traceable Claim Verification
  3. Cornerstones or Stumbling Blocks? Deciphering the Rock Tokens in On-Policy Distillation
    NeurIPS 2026
    Cornerstones or Stumbling Blocks? Deciphering the Rock Tokens in On-Policy Distillation
    Yuxuan Jiang†, Runchao Li†, Shubhashis Roy Dipta†, and 2 more authors
    † Equal contribution
    arXiv
  4. TRIAGE: Evaluating Prospective Metacognitive Control in LLMs under Resource Constraints
  5. AgentCollabBench: Diagnosing When Good Agents Make Bad Collaborators
    NeurIPS 2026
    AgentCollabBench: Diagnosing When Good Agents Make Bad Collaborators
    Aritra Mazumder, Shubhashis Roy Dipta, Nusrat Jahan Lia, and 10 more authors
    arXiv Code Website
  6. PA3: Policy-Aware Agent Alignment through Chain-of-Thought
    EMNLP 2026
    PA3: Policy-Aware Agent Alignment through Chain-of-Thought
    Shubhashis Roy Dipta, Daniel Bis, Kun Zhou, and 4 more authors
    Work done during internship at Amazon Alexa AI
    arXiv 🤗 Hugging Face Video Slides
  7. †DAGGER: Distractor-Aware Graph Generation for Executable Reasoning in Math Problems
  8. GanitLLM: Difficulty-Aware Bengali Mathematical Reasoning through Curriculum-GRPO
  9. VC-Inspector: Advancing Reference-free Evaluation of Video Captions with Factual Analysis
  10. Multimodal Unlearning Across Vision, Language, Video, and Audio: Survey of Methods, Datasets, and Benchmarks
  11. Q2E: Query-to-Event Decomposition for Zero-Shot Multilingual Text-to-Video Retrieval

Patents

  • AI-Based System and Method for Code Localization Using Dependency Graph Retrieval for Bug Identification in Software Repositories
    US provisional application filed, March 2026
  • System and Method for Anchor-Based Memory Indexing and Policy-Driven Retrieval Across Heterogeneous Sources
    US provisional application filed, March 2026

In the Press

Research Mentorship

Peer Review

Area chair and reviewer, 47+ papers across top venues since 2023.

Area Chair
ARR Oct (NAACL 2027)
Conferences
ACL6ICLR6NeurIPS5NAACL1CoNLL1EACL4COLING2WACV2*SEM1
Workshops
SemEval4TrustNLP2MATH-AI2SRW2W-NUT2ELVM1
Journals
Scientific Reports2BMC Bioinformatics1Plant Methods2Computational and Structural Biotechnology1