# 1201 search results for "Latex"

## How to: Binomial regression models in R

March 19, 2011
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$How to: Binomial regression models in R$

Ever wondered how to predict success or failure as a function of other variables? Here's a quick tutorial on binomial regression in R.

## More pi plus 1 (or plus 0.01) day fun

March 15, 2011
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Since I just didn’t get enough this morning, I spent some more time fooling around with estimating pi. Since I was basically counting the number of random x,y pairs inside a quarter circle and computing a sample average for more … Continue reading →

## RStudio: My thoughts

March 15, 2011
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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...

## I’m late for π day

March 15, 2011
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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 →

## Hacker News Analysis

March 13, 2011
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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 →

## 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 →

## Howling Winds and Stochastic Tones

March 9, 2011
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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

## My First Few Days with RStudio

March 9, 2011
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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),...

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 →

## Yet another R report generator, and more!

March 4, 2011
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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