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sciencemj/README.md

Hi, I'm MJ Park 👋

Business × Computer Science · Korea University · Seoul (KST)

I work on the seam between analytics and decisions — cleaning messy data, finding the question underneath it, and shipping something a non-analyst can act on. Most of my work lands as a written report rather than a model file.

Currently focused on NLP over user reviews, demand forecasting, and making analysis reproducible enough that someone else can rerun it.

Portfolio · Writing · LinkedIn · Contact


Featured work

Project What it does
LCC Review Sentiment Cluster Prioritized high-intensity, low-cost airline complaint fixes. Report
Steam Review Separated loud complaints from complaints that actually drive churn. Report
ConflictDynamics Co-built an LLM multi-agent office simulator where memory and shifting relationships drive conflict, with a Phaser replay viewer. Collab
More projects
  • tinyLLM — Pretrained a 29.6M-parameter chat model from scratch in 3 hours on one RTX 3060 Ti.
  • Toronto Airbnb Pricing — Compared what listing features are worth in Toronto's short-term and monthly Airbnb markets. (Report)
  • Transformer from Scratch — Built a transformer from torch primitives, tested by the properties the paper relies on.
  • deeptool — A thin helper library for handling PyTorch models object-oriented-style in Jupyter. (Docs)
  • Seoul Bike Analysis — Mapped station-level demand and supply gaps across Seoul.
  • argos — A local-first macOS desk where chat messages become tasks, events and notes for AI agents.

All projects → sciencemj.github.io/projects.html

Recent writing

Toolbox

Python R C SQL pandas NumPy scikit-learn PyTorch Jupyter

NLP · sentiment · clustering · time-series forecasting · data visualization · deep learning

Pinned Loading

  1. sciencemj.github.io sciencemj.github.io Public

    MJ — data & ML portfolio

    JavaScript

  2. track_driver_ML track_driver_ML Public

    ML a simple track game

    Python

  3. information_entropy_wordle information_entropy_wordle Public

    Python

  4. python_data_science_examples python_data_science_examples Public

    view how gradient descent works with python

    Jupyter Notebook

  5. pybacktest pybacktest Public

    backtest library for python

    Python 1

  6. argos argos Public

    A local-first desk for school and side projects — schedules, tasks, notes and AI agents in one place.

    Python 1