Things to consider before giving your model real tasks — There’s a big difference between “building a Machine Learning model” and “building a Machine Learning model for production”. If you miss on these (sometimes small) differences, your production model results can turn out much worse than you expected. So, what’s that different? …

Everything in programming can be done in multiple ways. Some ways are better than others. Some ways are much worse. A good programmer is expected to choose a good way of solving the task. Not necessarily always the best way, but definitely at least not the worst one. Let’s talk…

Alternative ways to improve the model score even further — What are the typical ways to improve a Machine Learning model? Adding more features. Performing selection to remove redundant features. Optimizing hyper-parameters. Ensembling several models together. Yes, all of this may work, but there are many other approaches to improve the score. Maybe some of them are a little bit…

Is there any point in doing that? — At a first glance, the answer might seem obvious. But let’s not hurry with the conclusions before digging a little bit deeper. I’ll start with a short story to create the context. Random Seed optimization in practice About 7 years ago, I started to learn Data Science and at about the same time I also…

If you are about to build your first model, be aware and avoid these — Data Science and Machine Learning are becoming more and more popular. The number of people in this field grows each day. Which means there are a lot of data scientists without big experience building their first Machine Learning models. And this is where mistakes are very likely to occur. Let’s…

Possibly, the most undervalued ML algorithm. What does come into your mind when talking about the bleeding edge machine learning algorithm? Deep networks, transformers? Maybe gradient boosting tree algorithms? Whatever it is, I’m quite sure, that Linear Regression won’t be on the list. And that shouldn’t be a surprise, as…

It won’t be easy, but you can do it and it’s worth it — In this article, I’m going to share a couple of battle-tested pieces of advice from my own experience, about how to reach the highest tier on Kaggle — Competitions Grandmaster. These will include both — concrete practical things to do, as well as more theoretical long-term guidelines. …

The existence of some of these may be a surprise for you. Most of us know IF-ELSE syntax. But the IF statements are not the only place for using an ELSE clause. Haven’t you used an ELSE clause when writing loops? Or maybe when handling exceptions? …

Let’s make our Python code better! This is a collection of some useful code constructions which can help to make your Python script look cleaner and more readable in certain cases. …