These days I was on vacation (this image should give you a hint!), so no post this week unfortunately... However, as of next week (or even later this week, depending on my workload), I should have something for you. In the meantime, you can check out some of my older posts. Until next time!

These days I'm working feverishly on a book project so there is no time for any new data science / A.I. related post here. If you want something else to read, feel free to check my articles on beBee, such as the latest one, available here. Parallel to all this, I'm preparing another educational project, something I'll talk more about later on. Stay tuned!

So, recently I decided to make a video on this topic, based on some things I've observed in data science candidates. The hope is that this may help them and anyone else who may be looking into becoming a more holistic data scientist, instead of just a data science technician. The video I made is now available online on O'Reilly and although it's a bit longer than others I've made (not counting the quiz ones), it's fairly easy to follow. Enjoy!

Alright, the quiz video fever is over for the time being, so I'm back to making conventional data science videos. This latest one on APIs, for example, just got published on O'Reilly.  It's more technical than others, but very useful, particularly if you know already a few things about data science. Anyway, I hope you enjoy it!

Note that although you can view the list of videos and books on O'Reilly's learning platform, you need to have a valid account in order to view them in their entirety. A pretty good investment, if you ask me, but before you commit to a monthly or a yearly subscription, you can always have a trial one which lasts for 10 days. Cheers!

So, the 7th quiz video I've created is finally online on O'Reilly. This is the longest one so far spanning over 51 minutes, meaning there are lots of explanations for the various questions. It covers a bunch of topics, such as A/B testing, ANOVA, and various statistical tests. I put a lot of thought in this, much like you'd put a lot of thought in designing a data science experiment. Hopefully, you'll find it as useful and enjoyable as I did.

Note that just like other videos published on O'Reilly, you'll need to have an active account (even if it's a trial one), in order to view it in its entirety. As a bonus, you'll be able to view other videos as well as books available on that platform. Enjoy!

Lately I've been down with a severe case of quiz fever! Combined with the fact that it was too hot to go outside (Mediterranean summer heat is no joke!), I was more focused on this task. As a result, I created a bunch of quizzes to publish on O'Reilly, two of which are now online. Namely, the Data Engineering and the Machine Learning Applications one are now available on the O'Reilly platform. Check them out when you have the chance.

Note that in order to have full access to the quizzes, you need an account with O'Reilly, a pretty good investment. If you are unsure whether you want to go for it, you can always create a trial account first (valid for 10 days) and check out the content of this great platform, without any strings attached. However, to maximize your benefit, I recommend you get a paid account. The plethora of quality content on this platform makes it worth it!

Furthermore, I recently noticed that my videos are receiving lots of hits and have fetched some very promising reviews. I'd like to thank you all for that. It's a relatively small thing for everyone of you to take the time out of your busy day and watch my work and you may not think much of it. However, it does make a difference to me, so I'm grateful for that. At a time when YouTube is the go-to option for many people, some of you choose quality over convenience and that's something I never take for granted. Cheers!

Since I'm in a quiz frame of mind these days, I've created yet another quiz video, which is now available on the O'Reilly platform. Namely, this quiz on Machine Learning vid explores a few key aspects of the subject, such as supervised, unsupervised and reinforcement learning, as well as the main model types and the hyper-parameters involved. Designed to be as inclusive as possible, this is a video that can benefit both the beginner to this topic and the more seasoned machine learning professional. Enjoy!

Note that O'Reilly is a subscription based platform (formerly known as Safari). So, in order to view this or any other video in its entirety, you'll need to have an account there. Definitely a worthwhile investment, if you ask me, particularly if you are a data science professional. I don't receive any benefits from saying this, btw, since I work with a different publisher (Technics Publications), who contributes these videos to this platform.

Just like week, during a business trip to London, I started working on this video, on my spare time, and now it's already online! In this 40 minute video, comprising of 3 clips, I explore the topic of Optimization, through a series of questions spanning across 5 categories. Whether you are an aspiring A.I. expert or a data scientist, you can learn a lot of useful things from this test of sorts and with the right mindset, even enjoy the whole process! You can find it on the O'Reilly platform, where you need to have an account (even a trial one will do) to watch it in its entirety. Cheers!

Being an expert in this topic since my PhD, I decided to create a video about it. The topic is a bit niche but it's very practical and useful in various data science tasks, particularly data engineering. Check out the video on O'Reilly and feel free to give me any feedback on it, especially regarding the I.D. metric once you look into it. Note that you will need an account on the O'Reilly platform in order to view the video (and any other material) in its entirety. However, considering the quality of the stuff there and the diversity of the content, it is a worthwhile investment. Also, you can have a free trial for 10 days to check it out, before you make a decision about it. Cheers!

As you may know already, one of the world's top data modeling conferences, Data Modeling Zone (DMZ), is taking place this November in Stuttgart. This is an international conference for all sorts of data professionals, not just data architects, plus it has an impressive bookstore. As I'll be participating in this conference as a speaker, I get to give away discounts and such. So, if you plan to register for the conference, you can use my last name (8 characters) to claim a 15% discount. With this kind of money, you can treat yourself to a tour to the lovely German countryside and still have some money left to buy a book or two from the aforementioned bookstore!