1011 search results for "Latex"

RStudio: My thoughts

March 15, 2011
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RStudio: My thoughts

Let me get this out of the way: I just love RStudio.Created by a team lead by JJ Allaire, a name that should ring a bell if you were involved in web development during the Clinton administration, RStudio is an R IDE that is actually designed for R from...

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I’m late for π day

March 15, 2011
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I’m late for π day

It is officially no longer pi day, but I didn’t see this Drew Conway post about estimating pi until just a few minutes ago. Because Google Reader doesn’t show github embeds, I also got to try it without seeing Drew’s … Continue reading →

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Hacker News Analysis

March 13, 2011
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Hacker News Analysis

I was playing around with the Hacker News database Ronnie Roller made (thanks!), so I thought I’d post some of my findings. Activity on the Site My first question was: how has activity on the site increased over time? I … Continue reading →

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A Kernel Density Approach to Outlier Detection

March 13, 2011
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A Kernel Density Approach to Outlier Detection

I describe a kernel density approach to outlier detection on small datasets. In particular, my model is the set of prices for a given item that can be found online. Introduction Suppose you’re searching online for the cheapest place to … Continue reading →

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Howling Winds and Stochastic Tones

March 9, 2011
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Howling Winds and Stochastic Tones

My greatest pleasures in mathematics come from observing--and here, listening to--the interplay of simple and complex. With a few axioms and definitions you can create surprising worlds, and in what seems like a mess you can find beautiful regularities. It's damn sexy, frankly. Here, I use a simple recursive equation to directly generate my sounds

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My First Few Days with RStudio

March 9, 2011
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My First Few Days with RStudio

As most readers are probably aware, the free IDE for R, called RStudio, was recently released for general use and it immediately made huge waves within the R community. IDE stands for Integrated Development Environment. IDEs typically provides a rich set tools developing in some target language. For standard programming languages like C++ (VisualStudio) and Java (Eclipse or NetBeans),...

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A Short Return to the Age-Earnings Profile

March 8, 2011
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A Short Return to the Age-Earnings Profile

Two posts ago I mentioned the age-earnings profile but did not provide a regression of log earnings on wage. I also offered, without evidence, that fitting a simple linear regression would be inappropriate. How do I know that? How could … Continue reading →

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Yet another R report generator, and more!

March 4, 2011
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Yet another R report generator, and more!

I recently uploaded some code to R-forge related to an R package I’ve been working on, titled yarr. The work was motivated by a desire to embed R code and output within my HTML blog posts! Months ago, I wrote about a potential solution to this using the brew package. yarr is a new, but

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Bootstrapping the Truncated Normal Distribution

March 2, 2011
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Bootstrapping the Truncated Normal Distribution

Here’s a post generated from my own ignorance of statistics (as opposed to just being marred by it)! In Labor Economics we walked through something called the truncated normal distribution. Truncated distributions come up a lot in the sciences because … Continue reading →

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The RStudio IDE: first impressions are positive

February 28, 2011
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The RStudio IDE: first impressions are positive

Integrated development environments (IDEs) are software development tools, providing an interface that enables you to write, debug, run and view the output of your code. Whether you need an IDE or find them useful depends very much on your own preferences and style of working. In my own case for example, I’ve tried both Eclipse

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