Why Your Betas Explode: The Hidden Geometry of Multicollinearity
a marketing mix model to a senior director. The slide showed two beta coefficients side by side: Linear TV at +2.4, Digital TV at +1.8. He nodded, satisfied. Then he…
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RAG vs Fine-Tuning Explained: What They Actually Do and When to Use Each
, I have written quite a lot about RAG, starting with the Hitchhiker’s Guide to RAG with ChatGPT API and LangChain, and then exploring various topics related to RAG and…
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I Built My Second ETL Pipeline. This Time, I Started Thinking Like a Data Engineer
, I decided I wanted to transition from data analyst to data engineer. Like many people starting out, I was overwhelmed by the sheer number of things I thought I…
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PANet Paper Walkthrough: When Feature Pyramids Go Bottom-Up
I wrote about the FPN (Feature Pyramid Network) architecture [1], which is one of the most influential necks we can apply to a backbone model. FPN was first introduced to…
