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Thoughts on data engineering, hardware hacking, and software development.

2026-05-02
by Andri Ólafsson

Cocktails for Noir Game Night

A curated menu of high-stakes spirits for a rain-soaked night of mystery and LLM-driven storytelling.

MixologyNoirDiplomaticoTequilaGame Night
2026-04-06
by Andri Ólafsson

Dialing the Past, Resurrecting an Old 1940s Telephone

A multi-year journey in mechatronics: rebuilding a 1940s Western Electric telephone so it rings and plays family history, using a 2011 Raspberry Pi, an AG1171 module, and immeasurable patience.

IoTPythonRaspberry PiHardware TinkeringLinuxMechatronics
2026-01-02
by Andri Ólafsson

The importance of visualizing data

A deep dive into Anscombe’s Quartet and a plea for the "misfit" data points. Why summary statistics are just a shadow of the truth.

Data ScienceStatisticsVisualizationAnscombes QuartetPython
2025-11-24
by Andri Ólafsson

The Taming of the CSV: A Guide to Robust Data Ingestion

A survival guide for ingesting messy data, handling encoding nightmares, and building pipelines that scream when things go wrong.

Data EngineeringPythonPandasBest PracticesETL
2025-11-24
by Andri Ólafsson

Seeing in Curves: A Practical Guide to ROC, TPR, FPR, and the Four Outcomes of Classification

A clear, intuitive walkthrough of ROC curves, true/false positives and negatives, and how to understand model performance beyond accuracy.

Machine LearningModel EvaluationData ScienceClassificationMetrics

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