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Data Science

Data Science allows us to extract meaning from and interpret data.

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A CSV sample that looks like the whole dataset is worse than no CSV at all

A CSV sample that looks like the whole dataset is worse than no CSV at all

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5 min read
One average eval score was hiding two different failure modes

One average eval score was hiding two different failure modes

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5 min read
How to Detect Lookahead Bias in a Backtest: A Practical Checklist

How to Detect Lookahead Bias in a Backtest: A Practical Checklist

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5 min read
"Raise the price, sell less" is backwards: $200+ Gumroad products sell 3.6x MORE units than $49 ones.

"Raise the price, sell less" is backwards: $200+ Gumroad products sell 3.6x MORE units than $49 ones.

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3 min read
How ICD-10 Codes Map to an HCC / RAF Score (and Why the Same Code Set Yields Different Scores)

How ICD-10 Codes Map to an HCC / RAF Score (and Why the Same Code Set Yields Different Scores)

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2 min read
Beyond the Basics: Streamlit, Dash, and Bokeh for Interactive Dashboards

Beyond the Basics: Streamlit, Dash, and Bokeh for Interactive Dashboards

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5 min read
One Master Dataset, Two Consumers: Building a Governed Pipeline for BI + ML

One Master Dataset, Two Consumers: Building a Governed Pipeline for BI + ML

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3 min read
Bootstrapped Data Products — Here's What I Learned

Bootstrapped Data Products — Here's What I Learned

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2 min read
Translate Chinese University Projects into US Data Engineering Bullets

Translate Chinese University Projects into US Data Engineering Bullets

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3 min read
Pinnacle Killed Its Public API. Here's How to Get Pinnacle Odds in 2026 (With Code)

Pinnacle Killed Its Public API. Here's How to Get Pinnacle Odds in 2026 (With Code)

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5 min read
How to Scrape YouTube Shorts Data (Exact View, Like & Comment Counts)

How to Scrape YouTube Shorts Data (Exact View, Like & Comment Counts)

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5 min read
The sleep score is the least honest number in your health app

The sleep score is the least honest number in your health app

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1 min read
Your Clinical Database Is Lying to You (And You Already Know It)

Your Clinical Database Is Lying to You (And You Already Know It)

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7 min read
Survivorship Bias vs Lookahead Bias: The Two Silent Backtest Killers

Survivorship Bias vs Lookahead Bias: The Two Silent Backtest Killers

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5 min read
Point-in-Time Fundamentals Data: What It Is, Why It Matters, and How to Choose

Point-in-Time Fundamentals Data: What It Is, Why It Matters, and How to Choose

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6 min read
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