SkillCompass
Skill checks scored like chess ratings
SkillCompass gives two-minute quizzes in 40-plus fields, rates them Elo-style on real response data, and returns a percentile, a knowledge map and a study plan. Runs full stack on $0 a month.
Jeremy Lee
Data scientist, UCLA Anderson MSBA. Models, decision tools and data stories: 30 projects, all live.
Selected work
Featured
A product, a decision tool, two data stories, a language app.
Decision tools
Route planning for a five-year-old battery
An EV trip planner with range modeling adjusted for elevation and weather, charger stops under a hard reserve, and a detour budget spent avoiding unprotected left turns.
Survival analysis
How long does a world record live?
Kaplan-Meier and Cox regression over ~250 track-and-field record reigns. Median half-life: about 1.5 years, with an estimate of which current records fall next.
Regression
A hot day costs the typical Boston runner 31 minutes
Fourteen Boston Marathons paired with race-day weather: the field median slows roughly one minute per degree Fahrenheit (r = 0.86).
Language
Speaking Cantonese from today's news
Hong Kong news rewritten to spoken register with a review pass, neural zh-HK audio, jyutping, tap-to-compare and speech grading. Costs nothing to run.
Applied AI
The fine-tuning series
Four photo-to-data apps, each with a locally fine-tuned LoRA benchmarked against Claude zero-shot.
Cellar Scanner
27.7% vs 23.0%
Snap a wine label, name the grape blind
A 1.5B model tuned on my laptop out-guesses Claude zero-shot at grape variety from a blind tasting note.
Menu Decoder
99.3%
Any menu, translated and allergen-flagged
Cuisine called right from nothing but the dish name, with 69.3% recall across all 14 allergens.
Receipt Auditor
90.5% vs 56%
Receipts in, clean spending data out
The local model beats zero-shot Claude on merchants neither has ever seen.
Race Day Copilot
5x verified
A course photo in, a race plan out
Every km-by-km split passes five deterministic checks before you ever see it.
Analysis
Data stories
Findings from the analysis projects, with the chart that carries each.
Wine Score Inflation
The 100-point wine scale is an 8-point scale
Across 130,000 professional reviews, nothing scores below 80 and 86% land between 84 and 92. Price buys points, with steep diminishing returns.
Hitting the Wall
The wall is real, and it sits near 30 km
Per-5K splits hold flat for 30 km, then slow sharply; the median late-race slowdown is 15%.
Love Island Lexical Analysis
Love Island runs on 100 words
61% of everything said on a season is the top 100 words; about 1,250 words cover 95% of the show.
2.5%of 31,912 Boston finishers ran the negative split coaches preach2xhit songs doubled in length across 50 years of Billboard charts3:52median Boston finish; the field is log-normal68 ptsgap between the best- and worst-scoring events' elite ceilings90.5%receipt categories called correctly by a model tuned on a laptop
The index
All 30 projects
Grouped the way I file them. The name opens the code.
Featured projects
9
Applied AI engineering
4Generative AI and agents
2
Running and sports analytics
8
