Towards Data Science AI
Production-Grade Observability for AI Agents: A Minimal-Code, Configuration-First Approach
LLM-as-a-Judge, regression testing, and end-to-end traceability of multi-agent LLM systems
3 Techniques to Effectively Utilize AI Agents for Coding
Learn how to be an effective engineer with coding agents
When (Not) to Use Vector DB
When indexing hurts more than it helps: how we realized our RAG use case needed a key-value store, not a vector database
Separate Numbers and Text in One Column Using Power Query
An Excel sheet with a column containing numbers and text? What a mess!
The Machine Learning “Advent Calendar” Day 16: Kernel Trick in Excel
Kernel SVM often feels abstract, with kernels, dual formulations, and support vectors. In this article, we take a different ...
Lessons Learned After 8 Years of Machine Learning
Deep work, over-identification, sports, and blogging
The Machine Learning “Advent Calendar” Day 15: SVM in Excel
Instead of starting with margins and geometry, this article builds the Support Vector Machine step by step from familiar mod...
6 Technical Skills That Make You a Senior Data Scientist
Beyond writing code, these are the design-level decisions, trade-offs, and habits that quietly separate senior data scientis...
Geospatial exploratory data analysis with GeoPandas and DuckDB
In this article, I’ll show you how to use two popular Python libraries to carry out some geospatial analysis of traffic acci...
Lessons Learned from Upgrading to LangChain 1.0 in Production
What worked, what broke, and why I did it