A place to write about data, software, and whatever catches my curiosity — free from the pressure to monetize or to be right. Exploration, for the simple pleasure of it.
Browse: Data·Image Processing·Cryptography·Personal
Dynamic Email Templates - Part 3: Stopping on Regret · latest
How we turned 'is my test done?' into a statistical verdict using an expected-regret stopping rule, and the lifecycle machinery around it: promoting winners and graduating finished tests into static templates.
Dynamic Email Templates - Part 2: Allocating on Confidence
A field guide to allocation strategies for per-slot email bandits: probability matching versus proportional rules, per-slot rewards, cold-start gates, guardrails, and shrinkage - the math, the strengths, and the failure modes of each.
Dynamic Email Templates - Part 1: One Bandit per Slot
How we evolved from A/B testing whole emails to dynamic templates with per-component variant pools, using independent multi-armed bandits per slot to escape combinatorial explosion - covering the architecture, the weights table, and the feedback loop.
Paint By Numbers - Victory At Last?
After a 10-month hiatus, the paint-by-numbers project reaches its conclusion. Discover how switching to CIELab color space, leveraging morphological transformations, and refining the algorithm produced stunning results with organic shapes and natural colors.
Winning with Multi-Armed Bandits: Smarter Experimentation in Databricks
Learn how Multi-Armed Bandits provide a powerful alternative to static A/B testing by balancing exploration and exploitation, using Bayesian methods to adapt experiments in real time and maximize results.
Simple Anomaly Detection in Databricks Using Mean and Standard Deviation
Learn how Consumidor Positivo built a simple yet effective anomaly detection system in Databricks using mean, standard deviation, and generative AI for rapid data quality monitoring, automated diagnosis, and actionable insights.
A Stroll Through Encryption and Quantum Stuff
Explore the evolution of encryption from Caesar ciphers to RSA and quantum computing. Learn how modern cryptography works, why RSA is secure, and how quantum algorithms like Shor’s could change the landscape.
Why I Write
A reflection on the evolution of the internet from personal blogs to corporate-driven content, and the author's motivation to write authentically about topics of personal interest, free from monetization pressures.
An Attempt at Paint-by-Numbers - Part 3
Explore advanced techniques for removing thin regions, detecting boundaries, and labeling regions in images to achieve a classic Paint-by-Numbers effect using Python and OpenCV. This post covers practical algorithms, code examples, and visual results for image simplification and region labeling.
An Attempt at Paint-by-Numbers - Part 2
Explore advanced image processing techniques to transform photos into paint-by-number artworks. This post covers morphological transformations, region analysis, and Python code optimizations to simplify complex images for creative projects.
An Attempt at Paint-by-Numbers - Part 1
Follow a hands-on journey to create your own paint-by-numbers artwork using Python and image processing techniques. Learn how to enhance images, extract color palettes, reduce color spaces, and simulate brush effects step by step.
Thoughts Under The Axe...
Discover the story behind AxeCrafted and its author, Leonardo Machado - a data enthusiast and lifelong learner sharing reflections on science, culture, and everyday curiosities. Explore thoughtful musings inspired by life, learning, and the art of observation.
