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PhD candidate in Computer Science (Virginia Tech) focused on building and validating AI systems that support high-stakes human judgment. I develop end-to-end Python pipelines on messy observational data—from study design and modeling to reliability/robustness analysis and reproducible reporting—with research spanning interpretable ML for human decision processes, evaluation of modern AI systems, and sequential decision-making methods relevant to sampling and training mechanisms.

Experience

Graduate Research Assistant · Virginia Tech · Aug 2021 – Present

Advisor: Sanmay Das

  • Built and validated models of real-world human decision-making using large, noisy administrative datasets; emphasized replicable pipelines, clear error analysis, and decision-relevant metrics.
  • Developed interpretable ML baselines (short decision trees) to approximate “default” judgment policies and quantified systematic deviations; used this framework to study consistency and outcome correlates of overrides.
  • Designed evaluation protocols for AI judgment systems (including repeated-run robustness checks, aggregation from pairwise preferences to global rankings, and structured failure-mode analysis).
  • Implemented simulation and sequential decision-making methods (bandits / learning dynamics) relevant to adaptive sampling strategies and resource allocation under uncertainty.
  • Produced well-documented Python tooling for data preparation, feature generation, model training, and reporting to support iterative experimentation with strict temporal separation.
Graduate Teaching Assistant, Machine Learning (Graduate) · Virginia Tech · Aug 2023 – May 2024
  • Supported instruction for graduate ML (office hours, grading, exam logistics); strengthened communication of technical ideas and careful evaluation practice.

Selected Research

Modeling Discretion as a Budgeted Resource (Dynamic Policies) · 2026

Developed a dynamic model of costly, limited human intervention; characterized threshold-style policies and how distributional properties shape when to “spend” discretion under capacity constraints.

Street-Level AI: Are Large Language Models Ready for Real-World Judgments? · 2025

Designed and evaluated AI judgment pipelines with robustness checks (run-to-run consistency), alignment tests against established metrics, and clear communication of failure modes for operational settings.

Discretionary Trees: Understanding Street-Level Bureaucracy via Machine Learning · 2024

Built short, interpretable models of “default” human decision heuristics and quantified systematic deviations; analyzed consistency and when deviations are associated with improved outcomes—transferable for validating human scoring behavior.

Education

PhD, Computer Science · Virginia Tech · 2024 – Present

CGPA: 4.0/4.0

M.S., Computer Science · (ML Concentration) George Mason University · 2021 – 2023

CGPA: 3.96/4.0

B.A., Mathematics & Computer Science · (High Honors) Oberlin College · 2017 – 2021

CGPA: 3.82/4.0

Skills

Core
Python Statistical modeling ML evaluation & validation Reliability/robustness analysis Experiment design Reproducible workflows
ML / Data
Pandas NumPy scikit-learn PyTorch Feature engineering Temporal splits (anti-leakage) Structured error analysis Reporting
Methods
Interpretable ML (trees) Supervised learning Sequential decision-making (bandits) Simulation modeling Noisy observational data
Tools
Linux Git Shell (Bash/Zsh) SQL LaTeX Documentation & collaboration

Awards & Recognitions

Best Paper · Multi-Agent AI in the Real World Workshop @ AAAI 2025
Distinguished Academic Achievement Award · George Mason University · 2025
The R.J. Thomas ’52 Award for Outstanding Computer Science Students · Oberlin College · 2021
Oberlin College Research Fellow · Oberlin College · 2019–2021
Davis Project for Peace Award · Oberlin College · 2019

Service

Reviewer
FAccT ’26 EC ’26 AAAI ’26 AIES ’26 AAAI ’25 AIES ’25 EAAMO ’25
Organizing
Workflow Chair · AIES ’23 Local Chair · EAAMO ’22

Publications

  1. Budgeting Discretion: Theory and Evidence on Street-Level Decision-Making
    Gaurab Pokharel, Sanmay Das, Patrick J. Fowler · arXiv · 2026
  2. Street-Level AI: Are Large Language Models Ready for Real-World Judgments?
    Gaurab Pokharel, Shafkat Farabi, Patrick J. Fowler, Sanmay Das · Proceedings of the AAAI/ACM Conference on AI, Ethics, and Society (AIES) · 2025
  3. Beyond Automation: Understanding Fairness, Ethics, and Human Discretion in AI-driven Societal Decisions
    Gaurab Pokharel · Proceedings of the AAAI/ACM Conference on AI, Ethics, and Society (AIES) · 2025
  4. Fixed Points and Stochastic Meritocracies: A Long-Term Perspective
    Gaurab Pokharel, Diptangshu Sen, Sanmay Das, Juba Ziani · arXiv · 2025
  5. Discretionary Trees: Understanding Street-Level Bureaucracy via Machine Learning
    Gaurab Pokharel, Sanmay Das, Patrick Fowler · Proceedings of the AAAI Conference on Artificial Intelligence (AAAI) · 2024
  6. Converging to Stability in Two-Sided Bandits: The Case of Unknown Preferences on Both Sides of a Matching Market
    Gaurab Pokharel, Sanmay Das · arXiv · 2023