Alteryx Machine Learning Theory: Gradient boosted model

As a follow up to my random forest model blog, the next logical step is to explain the theory behind Alteryx’s gradient boosted model (GBM). Both models typically use an ensemble of decision trees to create a strong predictor. However, they differ in how they act at each stage of the ensemble.

Dashboard week day 3 – Building transport maps is fun!

For day 3 of dashboard week, Andy gave us the challenge of creating a transport dashboard in relation to a City.  As we were not allowed to viz on New York or London, the initial challenge was to find a City that had data granular enough to build an insightful viz.

Dashboard week day 2: Brewery and Beer Style Recommendations

This morning Andy greeted us with alcoholic data and the choice was between analysing wine or beer datasets. I chose the latter which turned out to be very challenging due to the lack of detailed statistical datasets.

I spent the morning searching online datasets and API’s to try and find a dataset suitable for tableau. Eventually, I came across data on that provided 1,586,614 reviews of around 45,000 beers.

Dashboard Week Day 1: NBA Franchise History

Today was our first day of dashboard week and we had to create dashboards with NBA data.  I drew lot number 4 and ended up with the task of creating a dashboard the illustrated NBA franchise history.