Articles by Beau Lucas

Cross-Validation: Estimating Prediction Error

April 29, 2016 | Beau Lucas

What is cross-validation? Cross-Validation is a technique used in model selection to better estimate the test error of a predictive model. The idea behind cross-validation is to create a number of partitions of sample observations, known as the validation sets, from the training data set. After fitting a model on ... [Read more...]

Introduction to Circular Statistics – Rao’s Spacing Test

November 29, 2015 | Beau Lucas

Today will be a brief introduction in to circular statistics (sometimes referred to as directional statistics). Circular statistics is an interesting subdivision of statistics involving observations taken as vectors around a unit circle. As an example, imagine measuring birth times at a hospital over a 24-hour cycle, or the directional ... [Read more...]

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