The Bootstrap
Recently I’ve had occasion to use the bootstrap and have been reminded at what a remarkably powerful technique this is despite it’s simplicity. I thought…
Look what the Cat dragged in: Catboost with Tidymodels
I’ve been learning the Tidymodels framework for building Machine Learning models in R pioneered by Max Kuhn and Julia Silge. After spending a few weeks…
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Gradient Descent: The Workhorse of Machine Learning
If you’re like me, you’ve heard a lot about Gradient Descent. You’ve heard that it is a foundational algorithm for optimising functions which all self…
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Eigenvectors from Eigenvalues – Application
Introduction Recently, Quanta magazine published an article about how a new basic identity about Linear Algebra has surfaced from Applied Physics. The identity is about…
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Market Basket Analysis – The Apriori Algorithm
Prologue Earlier my career I worked for a loyalty card scheme for one of the largest supermarkets in the UK. During my time I was…
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Nearest Neighbour Classifiers
Nearest neighbour algorithms classify unlabelled instances (data observations/ cases) by assigning them to a class which is the most similar found in the training data.…