Salem Marafi

An interactive SQL learning experience We run a micro-courses business, Afterskills, to help professionals ramp up their skills on specific and technical topics. One of our products, MBASQL, is designed to help MBA’s, Business Analysts, and other professionals...

If you own a business and sell online, you will have had to – at some point or another – name a whole bunch of images in a specific way to stay organised. If you sell on behalf of brands, naming your images is even more important. Problem: Lets say you...

To start, I have to say that it is really heartwarming to get feedback from readers, so thank you for engagement. This post is a response to a request made collaborative filtering with R. The approach used in the post required the use of loops on several...

I was recently sent an email about transforming tweet data and presenting it in a simple way to represent stats about tweets by a certain category. I thought I would share how to do this: A tweet is basically composed of text, hash tags (text prefixed...