Forecasts After Marina’s Turbulence

August 30, 2014
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Forecasts After Marina’s Turbulence

It’s more difficult than ever to tell who is going to continue in the runoff after the October 5th. After Marina’s campaign mate’s death, a big chunk of the electorate have been persuaded towards the alternative between PT and PSDB. The values I used to start the chains, my initial beliefs, were that Dilma would

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Age-Length Keys in FSA

August 30, 2014
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Age-Length Keys in FSA

I have updated the age-length key related functions in FSA and the age-length key vignette.  The details are below.   Let me know if you have questions or suggestions....

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pbapply()

In my previous post, I wrote about displaying a Windows progress bar (useful when going through long for-loops).  In the comments, a couple of users recommended that I check...

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BH release 1.54.0-4

August 29, 2014
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Another small new release of our BH package providing Boost headers for use by R is now on CRAN. This one brings a one-file change: the file any.hpp comprising the...

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LED is my new Hello World – R Time

LED is my new Hello World – R Time

Yep...as I have said many times before, the LED Number application has become my new Hello World...whenever I learn a new programming language I try to build this, because...

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How unusual is it for TLDs to resolve to an address at the top most level? (a.k.a. a sneaky, basic introduction to dplyr)

August 29, 2014
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How unusual is it for TLDs to resolve to an address at the top most level? (a.k.a. a sneaky, basic introduction to dplyr)

I saw this on Hacker News this morning and it got me curious as to how many other TLDs (e.g. .com) resolve to an address (i.e. http://uz./ displays...

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R tops KDNuggets data analysis software poll for 4th consecutive year

August 29, 2014
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R tops KDNuggets data analysis software poll for 4th consecutive year

KDNuggests asked its readers the question "What programming/statistics languages you used for an analytics / data mining / data science work in 2014?" and one again, R was the...

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Comparing ATR order sizing to max dollar order sizing

August 29, 2014
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Comparing ATR order sizing to max dollar order sizing

First off, it has come to my attention that some readers have trouble getting some of my demos to work … Continue reading →

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Launching DATA-COPE

August 28, 2014
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Really excited to launch my new website  - DATA-COPE, a place for education data analysts to share ideas, learn about the latest tools and policies affecting their work, and to...

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Matt Dowle’s data.table Talk from useR! 2014

August 28, 2014
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Matt Dowle holds a wealth of knowledge and is worth listening to for a variety...

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R User Group Roundup

August 28, 2014
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R User Group Roundup

by Joseph Rickert In the first half of 2014, worldwide R user group activity continued to increase, showing impressive growth over the same periods for the past couple of...

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A Brief Introduction to Plotly

August 28, 2014
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A Brief Introduction to Plotly

This is a guest post by Matt Sundquist. Matt studied philosophy at Harvard and is a Co-founder at Plotly. He previously worked for Facebook’s Privacy Team, has been a Fulbright...

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Yet another R package primer

August 28, 2014
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Yet another R package primer

Hadley Wickham is writing what will surely be a great book about the basics of R packages. And Hilary Parker wrote a very influential post on how to write...

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Getting emotional in the absence of something: Using the Berlin Affective Word List to analyze emotional valence and arousal for nouns and adjectives.

August 28, 2014
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Getting emotional in the absence of something: Using the Berlin Affective Word List to analyze emotional valence and arousal for nouns and adjectives.

This is something I did a while ago using the Berlin Affective Word List (BAWL).The BAWL contains ratings for 2902 German words (2107 nouns, 504 verbs, 291...

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The Andrica’s Conjecture

August 27, 2014
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The Andrica’s Conjecture

Things should be as simple as possible, but not simpler (Albert Einstein) Following with conjectures about primes, it is time for Andrica’s conjecture. The great mathematician Leonhard Euler (1707-1783) pointed:...

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New Wine in an Old Bottle: R Markdown v2 and R Studio on the Cent OS Server

August 27, 2014
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Introduction New Pandoc Installing LaTeX Packages Introduction R Markdown Version 2 is a boon to students: with a single click one can convert an R...

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DataScienceLA interviews David Smith

August 27, 2014
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While I was in LA for the useR! 2014 conference last month, I had the great pleasure of being among the participants in the DataScienceLA interview series hosted by...

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statebins – U.S. State Cartogram Heatmaps in R

August 27, 2014
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statebins – U.S. State Cartogram Heatmaps in R

UPDATE The statebins package is now available on CRAN I became enamored (OK, obsessed) with a recent visualization by the WaPo team which @ryanpitts tweeted and dubbed statebins:

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R Workshops Updated to Include the Latest Packages

August 27, 2014
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R Workshops Updated to Include the Latest Packages

Two new R packages are quickly becoming standards in the R community: Hadley Wickham’s dplyr and tidyr. The dplyr package almost completely replaces his popular plyr package for data...

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Adding CITATION to your R package

August 27, 2014
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Adding CITATION to your R package

Original post from Robin's Blog:Software is very important in science – but good software takes time and effort that could be used to do...

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Reading the Gauss-Markov theorem

August 26, 2014
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Reading the Gauss-Markov theorem

What is the Gauss-Markov theorem? From “The Cambridge Dictionary of Statistics” B. S. Everitt, 2nd Edition: A theorem that proves that if the error terms in a multiple regression...

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TTTAR2: My First Shiny App with Bootstrap – #RUGSMAPS

August 26, 2014
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TTTAR2: My First Shiny App with Bootstrap – #RUGSMAPS

Thing To Try After useR! part 2 (TTTAR2) Originally, this post was supposed to be a sequel to TTTAR1 about h2o machine learning. Since TTTAR1...

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Statistics: Losing Ground to CS, Losing Image Among Students

August 26, 2014
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by Norman Matloff The American Statistical Association (ASA) leadership, and many in Statistics academia. have been undergoing a period of angst the last few years, They worry that the...

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Coursera course on computational finance with R

August 26, 2014
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Coursera course on computational finance with R

As of today (Tuesday 26th of August), a new session of Professor Eric Zivot’s course on computational finance and financial econometrics starts on Coursera. Just like the previous run of the...

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Making Your Code Citable

August 26, 2014
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Making Your Code Citable

Original post from GitHub Guides:Digital Object Identifiers (DOI) are the backbone of the academic reference and metrics system. If you’re a researcher writing...

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Statistics: Losing Ground to CS, Losing Image Among Students

August 26, 2014
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Statistics:  Losing Ground to CS, Losing Image Among Students

The American Statistical Association (ASA)  leadership, and many in Statistics academia. have been undergoing a period of angst the last few years,  They worry that the field of Statistics...

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ChainLadder 0.1.8 released

August 26, 2014
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ChainLadder 0.1.8 released

Over the weekend we released version 0.1.8 of the ChainLadder package for claims reserving on CRAN. What is claim reserving?The insurance industry, unlike other industries, does not sell...

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The Chi-Squared Test of Independence – An Example in Both R and SAS

The Chi-Squared Test of Independence – An Example in Both R and SAS

Introduction The chi-squared test of independence is one of the most basic and common hypothesis tests in the statistical analysis of categorical data.  Given 2 categorical random variables, and...

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Do Massive Workloads Equal Big Declines in Running Back Productivity?

August 25, 2014
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Do Massive Workloads Equal Big Declines in Running Back Productivity?

The popular wisdom is that “massive workloads” result in a decline in running back productivity in the following season. For example, anecdotal evidence using Corey Dillon (2004) and Jamaal...

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