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quinnarnold/README.md

Quinn Arnold

I’m an applied mathematics and statistics researcher working on reinforcement learning, deep learning, LLM safety and evaluation, and trustworthy AI.

I’m completing a B.S. in Applied Mathematics & Statistics at Bryant University, expected December 2026.

My current work includes FastCombo, GuidePost, and Black Box to Whom?

Incoming Associate Data Scientist at Opportunity Insights, Harvard University — January 2027.

Research and Work

  • FastCombo: Deep reinforcement learning for faster price discovery in partially observed combinatorial auctions.
  • Black Box to Whom?: Research on how mechanistic understanding of large language models should be defined, evaluated, and reported.
  • Ask Tupper: A security-hardened campus chatbot built with model fine-tuning, retrieval, and layered prompt-injection defenses.
  • GuidePost Technologies — Founder & Researcher: Building patrol-routing and coverage decision-support software for public-safety agencies.
  • SafeWalk: An open-source iOS and backend system for comparing shortest and risk-weighted walking routes using public incident data.
  • MAPFRE Insurance — Advanced Analytics Intern: Worked on model governance, bias assessment, reliability review, and LLM-assisted underwriting workflows.

Open Source

I contribute to open-source projects across machine learning, reinforcement learning, trustworthy and agentic AI, and LLM systems.

Links

Portfolio · Résumé · LinkedIn · GitHub · Email

Popular repositories Loading

  1. SafeWalk SafeWalk Public

    Experimental open-source iOS pedestrian routing with public incident data, time-binned KDE risk surfaces, and an App Attest-secured backend.

    Swift 1

  2. from-scratch from-scratch Public

    Neural Networks & other ML topics from scratch

    Jupyter Notebook

  3. quinnarnold quinnarnold Public

  4. llm-injection-defense llm-injection-defense Public

    Python

  5. Mava Mava Public

    Forked from instadeepai/Mava

    🦁 A research-friendly codebase for fast experimentation of multi-agent reinforcement learning in JAX

    Python

  6. jumanji jumanji Public

    Forked from instadeepai/jumanji

    🕹️ A diverse suite of scalable reinforcement learning environments in JAX

    Python