I keep coming back to CAPM whenever I need to explain to someone why some stocks are riskier than others. The model is simple enough to implement in an afternoon, but it captures something real about how the market prices…
I ran into the least cost transportation problem again last week, this time when a small manufacturing client needed help cutting their shipping costs. They had three plants shipping to five distribution centers, and every route had a different price…
I keep coming back to base64 whenever I’m working with APIs, JWT tokens, or any system that needs to safely transmit binary data as text. The other day I needed to decode a webhook payload that came in as a…
I remember the first time I tried to build a predictive model in Python – I had data, I had a vague idea of what I wanted, but I had no clue how to connect those two things into something…
I have used sklearn’s train_test_split more times than I can count. But every now and then I run into a situation where I cannot install sklearn – maybe it is a restricted environment, maybe I am working on a pure…
I remember the first time I tried to build a Telegram bot. I had a vague idea that it would involve some API and Python, but I kept putting it off because the setup looked complicated. Turns out, it takes…
I remember the first time I tried to read a machine learning paper and felt completely lost-not because of the concepts, but because of all the Greek symbols scattered throughout the equations. Pi, Sigma, Alpha, Beta… it felt like a…
I keep coming back to the MNIST dataset when I need to quickly test image processing pipelines or validate that a model architecture is actually learning. It is the hello world of machine learning datasets, and after working with it…
I have been building delivery route optimization tools in Python for several years now, and I keep running into the same problem when teaching newcomers: most tutorials either oversimplify the problem or jump straight into external solvers like Google OR-Tools…
I remember when I first came across Maximum Likelihood Estimation. I was working on a project that needed to estimate some unknown parameters, and a colleague suggested I look into MLE. honestly, it sounded more complicated than it actually was.…