Someone on Reddit posted Chapter 1 of Howard Wainer’s book, Picturing the Uncertain World. The name of the chapter is… Read more
Category: Using R
Using Simulation to Compute Confidence Intervals
I’ve been working through Gelman and Hill’s book, Data Analysis Using Regression and Multilevel/Hierarchical Models. I originally wanted to read… Read more
Buffon’s Needle Problem, or How to use Probability to Estimate Pi
I gave a presentation on Buffon’s Needle Problem in a job interview once. Here’s the presentation I gave in PDF… Read more
Scraping Data off a Web Site
I’m taking the Data Analysis class through Coursera and one of the topics we’ve covered so far is how to… Read more
A Combinatorial Simulation
I have started a new book called The Art of R Programming by Norman Matloff and I’m really digging it…. Read more
Machine Learning for Hackers, Chapter 12
In the final chapter the authors introduce Support Vector Machines (SVM). What SVM do are generalize linear decision boundaries for… Read more
How to run R in batch mode in Windows 7
I recently purchased The Art of R Programming with a gift card I got for Christmas. Three pages into chapter… Read more
Machine Learning for Hackers, Chapter 11
Are you a heavy Twitter user? Would you like to build a custom recommendation system in R that will recommend… Read more
Machine Learning for Hackers, Chapter 10
k-nearest neighbors (kNN) is the topic of chapter 10. The authors say it’s the most intuitive of the machine learning… Read more
Machine Learning for Hackers, Chapter 9
In this chapter we learn a little about Multidimensional Scaling, or MDS for short. Like PCA in Chapter 8, MDS… Read more