My experiments with data

From last couple of months I have been learning the core building blocks of LLM’s using a well known book called Build Large Language Model from Scratch. The book is very well written and highly recommended for someone who is interested in learning the internal architecture of LLM’s, but please note you will need to put some serious time & effort to get hold of it. This writing is inspired by the book hence full credit to the author Sebastian Raschka. ...

With the popularity of ChatGPT there has been a lot of buzz around generative AI and its capabilities. I’ve been using tools like BingChat and I can confidently say that I’m very impressed with our progress in the field of Generative AI. But, please remember AI aka “Deep Learning” is not just limited to Generative AI we can also use it for various tasks such as Computer Vision, Tabular Analysis, Collaborative Filtering etc. ...

Probability and Proportion are not the same. Although they appear to be the same however there is a very thin line between these two concepts. Let me explain! Probability vs Proportion What is probability? Wikipedia definition “Numerical descriptions of how likely an event is to occur or how likely the proportion is ture” Simply put, it’s a way of measuring an expected outcome of an event. For example, if I flip a fair coin what are the chances of getting a Head. ...

Very often we use Best-case and Worst-case scenarios to explain uncertainty. If you are into Sales or Revenue forecasting then you should be familiar with these terms. To understand further you can read the scenario planning article here. In this tutorial, I’ll show you how to create a nice little Best case and Worst case chart in excel to explain the underlying uncertainty. Excel chart for best & worst case If you know how to create a Line chart in excel then it will be very quick and easy. ...

Very often, you will have to construct an excel SUMIFS formula with multiple criteria based on the same column values. Which is equivalent to the SUMIFS formula with multiple OR conditions. I guess you may have tried it…but find it difficult to achieve. Because the Excel SUMIFS formula does not have any such option. So let me explain how to achieve this using a few tricks. Excel SUMIFS with multiple criteria If you are reading this article then I’d assume you already know how to use SUMFIS in general, if not then here is my SUMIFS tutorial. ...

I went from being a bad excel user to a professional after learning these excel tips and tricks. The good news is I’m going to teach you these tips using simple and real-life examples. There has been so much written about the best excel tips and tricks on the internet, I could literally find 2,23,000 exact matches by the time of writing this article. So, I don’t want to write one more article with all the garbage. ...

If you are an aspiring Data Scientist then the Pandas pivot table is one of the primary tools that you must learn. We all know how to use the excel pivot table. In fact, there are many use cases from summarizing data to performing calculations. But as you know excel pivot table is based on a Graphical User Interface (GUI) so it’s relatively easy to learn and apply. On the contrary Pandas pivot table is based on python code so it can be overwhelming for beginners and often your excel pivot table understanding will interfere. ...

I have been looking for the best Evernote alternative for a very long time. I have tried OneNote, SimpleNote, Notion, Dropbox paper etc. but nothing worked for me. So my search continued, but this time I was looking for open-source alternatives. My main criteria were, there should be an Android app, a Desktop app for Both Windows & Linux and a strong focus on Privacy. So, in my search process, I have come across Joplin. ...

Yes, the headline is correct, this tutorial is about employee attrition prediction using ML algorithms. A person like me who mostly writes tutorials on Excel and Finance has taken up this challenge to learn Data Science a few months back. (Please note I’m a finance professional with no IT background ) And today I can confidently say I’m somewhere around the intermediate level in terms of my data science/ML skills. So in this tutorial, I’ll show you how to predict employee attrition using various machine learning algorithms from start to end. ...

“Oh My God” excel formulas not working in my report. Sounds familiar right? If so, don’t worry, you are just one among many excel users who face this problem very often. Just think about it. You have built an excel model for Sales Forecast using various logics with fairly complicated formulas. [‘IF’ formulas with 64 conditions – just kidding] And when you try to use that model, you see some of your formulas either not working or looks broken. ...