As a technical writer, I enjoy my profession despite all rainy days and stormy nights. — Technical Writing Is Listening to a Music Concert Even if I cannot sing quite well, I enjoy listening to others. Even if I cannot code quite well, I enjoy watching what others have programmed. I never knew before that I will learn about so many startups and mature companies and so many exciting products and business models. …

Skills and motivation do a better job than certificates — The demarcation line between the self-taught folks and “normal” programmers with a degree became slightly discriminating. This article encourages the former ones to raise their heads and wear that self-taught title with pride. The perceived lack of theoretical knowledge behind the programming languages is often seen as a disadvantage and…

A simple solution with NumPy, Pandas, and Datetime for creating a test dataset with time series data. On the example of IoT connectivity… — The challenge Recently, I have worked for a customer who needed a tutorial involving data from a (non-existing) IoT company. I created a test dataset since all available open-source ones were not exactly a match. This inspired me for writing another tutorial: the one you are reading.

An example of inserting .csv data into an SQL database using Python — When you just learn to program, you may often use existing code snippets kindly shared by more experienced colleagues on StackOverflow or their personal blogs. The more advanced code you need to write the more customization you have to apply to the snippets that you find on the Internet. It…

… if you come from far away and without a privileged passport. — This article could be titled “How to find a good job in Europe” but I can only offer my experience and information I’ve gathered as a data science job candidate. The biggest challenge: your personal (un)presence Finding job announcements is not the biggest challenge. I will explain this later. The biggest problem I have encountered back…

Assembling your perfect code from the knowledge scattered around the web. How I learned Python on my own. — In my life, I’ve got to know quite a few people who came home after school, programmed fancy little applications instead of doing their homework, and then ended up working as software developers. They inspired me to learn Python on my own. …

A drag-and-drop alternative to the Python’s scikit-learn package. — Among other things, the scikit-learn is used to teach algorithms in selecting the best model. RapidMiner enables automated model selection, too. My First Encounter With RapidMiner A few years ago, I had a short career stop in a small AI startup. That job had brought me on a new level. …

How to make sure that data science is your calling? Indeed, if you feel good in your job, you are on the right path then! — I am totally convinced that everyone can be good (and earn good money!) only in the job they like doing. If you are bored by your tasks and have to force yourself every day, you cannot deliver quality results. But if data science makes you feel warm and light, then…

… and why I keep recommending more expensive tools over cheap ones. — In a business environment, I believe speed has the same priority as accuracy. In fact, my benchmark is that a good data tool should allow you to start deriving insights within an hour. Why so quick? Because business decisions cannot wait longer! I am often asked to give my opinion…