Monthly Archives: March 2014

President Approval Ratings from Roosevelt to Obama

March 29, 2014
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President Approval Ratings from Roosevelt to Obama

I have been watching the awesome Netflix show “House of Cards” and been fascinated by the devious schemes that Underwood is constantly plotting. The show often mentions approval ratings and it got me to wondering what Obama’s ratings currently were, and all other past US president  for that matter. However, I didn’t have much chance

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R / Finance 2014 Open for Registration

March 29, 2014
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The annoucement below just went to the R-SIG-Finance list. More information is as usual at the R / Finance page: Now open for registrations: R / Finance 2014: Applied Finance with R May 16 and 17, 2014 Chicago, IL, USA The reg...

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Introduction to PortfolioAnalytics

March 29, 2014
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Introduction to PortfolioAnalytics

PortfolioAnalytics Basics This is a guest post by Ross Bennett. Ross is currently enrolled in the University of Washington Master of Science in Computational Finance & Risk Management program with an expected graduation date of December 2014. He worked on the PortfolioAnalytics...

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R/Finance 2014 Registration Open

March 29, 2014
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As announced on the R-SIG-Finance mailing list, registration for R/Finance 2014 is now open! The conference will take place May 17 and 18 in Chicago.Building on the success of the previous conferences in 2009-2013, we expect more than 250 attendees fro...

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Theil’s Blus Residuals and R Tools for Testing and Removing Autocorrelation and Heteroscedasticity

March 28, 2014
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Guest post by Hrishikesh (Rick) D. Vinod, Professor of Economics, Fordham University. Theil (1968) proposed a transformation of regression residuals so that they are best, unbiased, linear, scalar (BLUS). No R code is available to implement them. I am providing the detailed description of the properties of BLUS residuals to the uninitiated and code. The matrix algebra itself is...

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Alternatives to model diagnostics for statistical inference?

March 28, 2014
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Alternatives to model diagnostics for statistical inference?

Consider the problem of making statistical inferences, as opposed to predictions. The product of statistical inference is a probabilistic statement about a population quantity, for example a 100(1-)% confidence interval for a population median. In this context, the principal reason for diagnostics is to comfort ourselves about the quality of such inferences. For example, we

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Titanic challenge on Kaggle with decision trees (party) and SVMs (kernlab)

March 28, 2014
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Titanic challenge on Kaggle with decision trees (party) and SVMs (kernlab)

The Titanic challenge on Kaggle is about inferring from a number of personal details whether a passenger survived the disaster or did not. I gave two algorithms a try, which are decision trees using R package party and SVMs using … Continue reading → The post Titanic challenge on Kaggle with decision trees (party) and SVMs (kernlab)...

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R Training for SAS users in Singapore and online

March 28, 2014
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Revolution Analytics has just introduced a 10-module series of R courses in Singapore. If you'd like to learn how to do data analysis in R, already know data analysis in another language like SAS and want to transition to R, or just want to enhance your R skills in a specific area, one of these hands-on courses may be...

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Slopegraphs | rCharts –> maybe finance versions

March 28, 2014
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Back in 2011, Charlie Park did two very thorough posts on Edward Tufte’s table graphics or slopegraphs. http://charliepark.org/slopegraphs/ http://charliepark.org/a-slopegraph-update/ These type graphics can provide very effective visualizations of ...

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Circular Migration Flow Plots in R

March 28, 2014
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Circular Migration Flow Plots in R

A article of mine was published in Science today. It introduces estimates for bilateral global migration flows between all countries. The underlying methodology is based on the conditional maximisation routine in my Demographic Research paper. However, I tweaked the demographic … Continue reading →

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