This document has concepts of neural networks sample code for using the neuralnet package.

This is a short post that shows how to connect to Twitter through the R package, twitteR. It then does a simple visualization of favorite counts for tweets sent by @BillGates.

This is a market basket analysis of sales data to uncover which items are most frequently bought with each other. I have shown 3 different groups that are highly common using 2 different but related methods: 1) via a heatmap and dendogram and 2) via PCA and k-means clustering.