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Data Science

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

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What is NumPy? The Backbone of Data Science in Python

What is NumPy? The Backbone of Data Science in Python

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3 min read
I Built an LSM-Tree in Pure Python and Finally Understood How RocksDB and Cassandra Handle Millions of Writes

I Built an LSM-Tree in Pure Python and Finally Understood How RocksDB and Cassandra Handle Millions of Writes

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6 min read
My first data analytics projects

My first data analytics projects

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3 min read
Building GeoPrizm: Turning Global News Events into a Bilateral Relations Index

Building GeoPrizm: Turning Global News Events into a Bilateral Relations Index

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2 min read
Python for Machine Learning: The Complete Roadmap Nobody Told You About

Python for Machine Learning: The Complete Roadmap Nobody Told You About

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7 min read
Why Your Backtest Is Lying to You — 3 Tests That Catch Lookahead Bias, Overfitting, and Fantasy Fills

Why Your Backtest Is Lying to You — 3 Tests That Catch Lookahead Bias, Overfitting, and Fantasy Fills

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3 min read
How to track Weibo hot-search velocity with Python in 2026 — the trending-delta problem and how to handle it

How to track Weibo hot-search velocity with Python in 2026 — the trending-delta problem and how to handle it

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4 min read
How Excel Is Used in Real-World Data Analysis Week 1 Reflection | Data Science & Analytics Program, LuxDevHQ

How Excel Is Used in Real-World Data Analysis Week 1 Reflection | Data Science & Analytics Program, LuxDevHQ

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4 min read
🚀 Top Data Analytics Project Ideas for Beginners and Professionals

🚀 Top Data Analytics Project Ideas for Beginners and Professionals

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3 min read
When Feature Importance Lies: Target Encoding at the Noise Floor

When Feature Importance Lies: Target Encoding at the Noise Floor

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8 min read
Walk-forward backtest: como nĂŁo enganar a si mesmo

Walk-forward backtest: como nĂŁo enganar a si mesmo

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5 min read
The Beta-Binomial trick for not overreacting to a tiny sample

The Beta-Binomial trick for not overreacting to a tiny sample

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3 min read
How I Batch-Convert 100+ Documents to Markdown for LLM Ingestion — 3 Practical Scripts

How I Batch-Convert 100+ Documents to Markdown for LLM Ingestion — 3 Practical Scripts

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6 min read
From Clean CSVs to Production‑Shaped Data: A Practical Guide for Academic ML and Data Engineering

From Clean CSVs to Production‑Shaped Data: A Practical Guide for Academic ML and Data Engineering

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5 min read
Excel 101

Excel 101

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2 min read
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