Marc Cheng

ZHONGMANG CHENG

Research Track

Research Interest: How LLMs handle self-referential processing — specifically whether the activation patterns during in-context reasoning bear any meaningful resemblance to what neuroscience describes as the Default Mode Network.

Academic Background

University of Toronto (St. George Campus) — Trinity College
Honours B.S. in Mathematics with High Distinction
Mathematics & Its Applications Specialist (Probability/Statistics)
September 2019 - June 2023

GPA: 3.6/4.0 | Dean's List: 2021, 2022, 2023

I completed a MAMBA state-space model with custom data pipelines, an independent implementation of GPT-2, and ResNet variants on CIFAR-10/100 — primarily as a way to understand architectures from the inside out rather than from the paper alone. All source code is on GitHub.

Corporate Track

Rexel Canada Electric Inc.

Product Data Specialist | June 2023 - May 2025

Led implementation of a new PIM system (Informatica P360) managing a 200,000-SKU product catalog. Built AWS CLI and Bash pipelines for cross-system data transfer, and contributed to internal LLM evaluation.

Deloitte Canada

Data Analyst (Co-op) | July 2021 - April 2022

Supported AML model validation for Scotiabank. Wrote SQL queries against Oracle databases (1M–20M transaction records) and assisted with clustering analysis in R and Python.

Everything Personal

Travel & Life

I've been moving between countries most of my life — born in Beijing, grew up in Shanghai, spent my teens in Montreal, and did university in Toronto. At some point the airport stopped feeling like a destination.

In 2023 I did a cross-continental road trip through North America: Toronto, Calgary, Vancouver, Seattle, San Francisco, Los Angeles, Las Vegas, Albuquerque, Oklahoma City, St. Louis, Chicago, Detroit.

That same summer I flew to Japan for a graduation trip.

In 2025 I did a solo trip to South America — Cusco, Machu Picchu, Lima, Buenos Aires, Rio de Janeiro. My camera got robbed in Rio. Lost all the video footage. The photos survived.

Art & Music

I studied drawing, watercolor, oil painting, and charcoal for several years under the supervision of Georges Kalmetti in Montreal — starting from around age 12, across three different studios.

On the music side I'm entirely self-taught: piano, guitar, ukulele, thumb piano. Mostly pop. No sheet music, no theory exams. I have an electric piano and an electric guitar at home that I play occasionally and probably not well enough.

Outdoors

I got into skateboarding at 16 with a penny board and eventually worked through popsicle, cruiser, longboard, and dance board. Not actively skating anymore.

I climbed for a while — bouldering and free climbing, currently around 5.8 YDS. Also done skydiving once, which I'd recommend to anyone who hasn't.

Other things I've done at least once: canoe trip, flying a single-engine propeller plane, hiking Algonquin in peak fall.

Anime

I follow anime and related media.

Favorite anime: Steins;Gate, Hyouka, and Fullmetal Alchemist.

2nd President of UTACG

University of Toronto Anime Comic and Game

President (Nov 2021 - Jan 2023): Led executive committee of 12, generated revenue of $33,000 with net profit of $2,200. Organized Lunar New Year Gala for 200 attendees.

Chair of Finance (Feb 2021 - Oct 2021): Led pricing analysis and merchandise procurement.

Finance Associate (Oct 2019 - Jan 2021): Managed prime membership and event operations.

Gaming

I have a weak spot for space and city simulation — Dyson Sphere Program, Kerbal Space Program, Stellaris, Cities Skylines. The kind of games where you look up and three hours have passed.

Currently my main game is Arknights. For multiplayer I'll occasionally show up in League, VALORANT, Overwatch, Delta Force, or FFXIV depending on who's online.

Other Social