Earlier we spoke about PITCHfx resources, and now we will learn about R resources. Well, what is R? Straight from wikipedia:R is a programming language and software environment for statistical computing and graphics. The R lang...

Earlier we spoke about PITCHfx resources, and now we will learn about R resources. Well, what is R? Straight from wikipedia:R is a programming language and software environment for statistical computing and graphics. The R lang...

A famous finance professor once told us that good diversification meant holding everything in the world. Fine, but in what proportion? Suppose you could invest in every country in the world. How much would you invest in each? In a market-capitalization weighted index, you'd invest in each country in proportion to the market value of its investments (its "market capitalization")....

The K-means algorithm is a method to automatically cluster similar data examples together. The intuition behind K-means is an iterative procedure that starts by guessing the initial centroids, and then refines this guess by repeatedly assigning examples to their closest centroids and then recomputing the centroids based on the assignments. Read more »

Another set of stepping stones that provide a clunky route to a solution that @mhawksey has been working on a far more elegant expression of (eg Free the tweets! Export TwapperKeeper archives using Google Spreadsheet and Twitter: How to archive event hashtags and create an interactive visualization of the conversation)… The recipe is as follows: