Noah Mitchell

Noah Mitchell

Machine learning researcher

I work on a central question: how can we make learning systems better at solving difficult problems?

Research

Building State vs. Using State: Representation and Utilization in Multi-Step Tasks

Noah Mitchell · Preprint

Task-agnostic methods for improving downstream performance by helping language models and reinforcement-learning agents use learned internal state more effectively.

Preprint

Amortizing Search Under Inference Budgets for LLM Reasoning

Noah Mitchell · Preprint

A learned search controller that amortizes verifier-guided search, improving hard-problem solve rates while reducing inference compute.

Preprint

What Must a World Model Preserve for Decision-Making Under Severe State Budgets?

Noah Mitchell · Preprint

Decision-preserving world-model compression that retains near-full planning performance using one percent of the original state space.

Preprint

The Cost of Absolute Position: A Spread–Expressivity Tradeoff in Transformers

Noah Mitchell*, Isaac Gabriel*, Alexander Wyatt* · Equal contribution · Preprint

An empirical study of positional representation in GPT-2-style transformers, with experiments scaling to 1.2B parameters on H100s.

Preprint

Experience

Machine Learning Engineer Intern

Tower Research Capital · Montréal

May–Sep 2026

Worked on autonomous data and quantitative-research systems, alongside large deep-learning models for market features.

NSERC Researcher

University of Ottawa

Dec 2024–May 2026

Developed adversarially robust quantization methods and ran reproducible multi-node H100 experiments on national HPC infrastructure.

Machine Learning Developer Intern

Kinaxis

Sep–Dec 2024

Trained a policy-gradient agent to partition supply-chain optimization graphs, reducing downstream solver time by 33 percent.

About

I am completing an Honours Bachelor of Mathematics at the University of Ottawa, expected in 2027. My research combines theory and experiment across deep learning, reinforcement learning, and optimization, with large-scale empirical work using PyTorch, JAX, distributed training, Slurm, and multi-node H100 systems.