A question that came out on X validated is asking for help in figuring out the UMVUE (uniformly minimal variance unbiased estimator) of (1-θ)½ when observing iid Bernoulli B(θ). As it happens, there is no unbiased estimator of this quantity and hence not UMVUE. But there exists a Bernoulli factory ...

We will work with the Breast Cancer Wisconsin dataset, where we will apply the K-Means algorithm to the individual’s features ignoring the ... Read moreHow to determine the number of Clusters for K-Means in R

Note to self: How to quickly set a colour scheme in ggplot2. Imagine we have a series of plots that all need a uniform colour scale. The same category needs to have the same colour in all graphics, made possibly with different packages and by different people. Instead of hard-coding ...

FiveThirtyEight’s Riddler Express link Riddler City is a large circular metropolis, with countless square city blocks that each have a side length of 1 km. A small section of the city, composed of 36 blocks, is shown in the diagram below: At the very center of the city lies Riddler City ...

In this tutorial, learn how k-means clustering algorithm works along with the example code in R.

In this section, we will learn how to execute Ridge Regression in R. We use ridge regression to tackle the multicollinearity problem. Due to multicollinearity, the model estimates (least square) see a large variance. Ridge regression is a method by which we add a degree of bias to the regression ...

LASSO regression stands for Least Absolute Shrinkage and Selection Operator. The algorithm is another variation of linear regression, just like ridge regression. We use lasso regression when we have a large number of predictor variables. Overview – Lasso Regression Lasso regression is a parsimonious model that performs L1 regularization. The L1 ...

A {tidytext} analysis of John Locke and John Stuart Mill

easyalluvial allows you to build exploratory and interactive alluvial plots (sankey diagrams) with a single line of code while automatically binning numerical variables. This release 0.2.3 ensures dplyr 1.0.0 compatibilitiy and now builds a slick pkgdown documentation website and makes better use of Travis CI using multiple builds to test compatibility with ...

Files A comma-separated values (CSV) file is a delimited text file that generally uses a comma to separate values. A CSV file stores tabular data (numbers and text) in plain text. Each line of the file is a data record. Each record consists of one or more fields, separated by ...

Files A comma-separated values (CSV) file is a delimited text file that generally uses a comma to separate values. A CSV file stores tabular data (numbers and text) in plain text. Each line of the file is a data record. Each record consists of one or more fields, separated by ...