Why do we love R so much?

February 19, 2014
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When Jeff, Brian, and I started the Johns Hopkins Data Science Specialization we decided early on to organize the program around using R. Why? Because we love R, we use it everyday, and it has an incredible community of developers … Continue reading →

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The replication and criticism movement is not about suppressing speculative research; rather, it’s all about enabling science’s fabled self-correcting nature

February 19, 2014
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Jeff Leek points to a post by Alex Holcombe, who disputes the idea that science is self-correcting. Holcombe writes [scroll down to get to his part]: The pace of scientific production has quickened, and self-correction has suffered. Findings that might correct old results are considered less interesting than results from more original research questions. Potential […]The post The replication and criticism movement is not about suppressing speculative research; rather, it’s…

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R: Fun with surf3D function

February 19, 2014
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R: Fun with surf3D function

There is one package that I've been longing. A package that will give me the power to manipulate and do any 3D stuffs in R. I tried persp and wireframe, but I find them difficult to use especially on complicated mathematical functions, like doing param...

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Voting Twice in France

February 19, 2014
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On the Monkey Cage blog, Baptiste Coulmont (a.k.a. @coulmont) recently uploaded a post entitled “You can vote twice ! The many political appeals of proxy votes in France“, coauthored with Joël Gombin (a.k.a. @joelgombin), and myself....

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Techniques for scoring a regression model in SAS

February 19, 2014
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Techniques for scoring a regression model in SAS

My previous post described how to use the "missing response trick" to score a regression model. As I said in that article, there are other ways to score a regression model. This article describes using the SCORE procedure, a SCORE statement, the relatively new PLM procedure, and the CODE statement. [...]

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Global energy forecasting competitions

February 19, 2014
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Global energy forecasting competitions

The 2012 GEFcom competition was a great success with several new innovative forecasting methods introduced. These have been published in the IJF as follows: Hong, Pinson and Fan. Global Energy Forecasting Competition 2012 Charleton and Singleton. A refined parametric model for short term load forecasting Lloyd. GEFCom2012 hierarchical load forecasting: Gradient boosting machines and Gaussian processes Nedelec, Cugliari and Goude: GEFCom2012: Electric load forecasting and backcasting with semi-parametric models Ben Taieb and Hyndman. A…

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Off to New Zealand in July

February 19, 2014
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Off to New Zealand in July

The New Zealand Association of Economists is holding its 55th annual conference in early July of this year, in Auckland.I'm delighted that I'll be there as a keynote speaker. The very first conference presentation that I made was at the meeting of...

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Update on Dataviz Workshop 1

February 19, 2014
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Update on Dataviz Workshop 1

Happy to report on the dataviz workshop, a first-time offering at NYU. I previously posted the syllabus here. I made minor changes to the syllabus, adding Alberto Cairo's book, The Functional Art (link), as optional reading, some articles from the...

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Aris Spanos: The Enduring Legacy of R. A. Fisher

February 19, 2014
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Aris Spanos: The Enduring Legacy of R. A. Fisher

More Fisher insights from A. Spanos, this from 2 years ago: One of R. A. Fisher’s (17 February 1890 — 29 July 1962) most re­markable, but least recognized, achievement was to initiate the recast­ing of statistical induction. Fisher (1922) pioneered modern frequentist statistics as a model-based approach to statistical induction anchored on the notion of a […]

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Bivariate Densities with N(0,1) Margins

February 19, 2014
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This Monday, in the ACT8595 course, we came back on elliptical distributions and conditional independence (here is an old post on de Finetti’s theorem, and the extension to Hewitt-Savage’s). I have shown simulations, to illustrate those two...

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Slime-Based Maps Simulate Real-World Transportation Networks

February 18, 2014
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Slime-Based Maps Simulate Real-World Transportation Networks

Several research groups around the world in the area of mobility and transportion optimization are exploring the use of a particular slime mould, Physarum polycephalum (the "many-headed slime"), to establish the most efficient routes around congested ...

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3D Globe Visualizes the Flows of Food-Aid Funding among Countries

February 18, 2014
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3D Globe Visualizes the Flows of Food-Aid Funding among Countries

WFP: Country Donors and Recipients [wfp.org] by Santiago Ortiz shows all World Food Programme (WFP) funding from 2003 to present as flows among individual countries. Each country on the low-polygon count, interactive 3D globe can be selected, in orde...

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k-means clustering in a GIF

February 18, 2014
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k-means clustering in a GIF

k-means is a simple and intuitive clustering approach. Here is a movie showing how it works:

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Florida backlash

February 18, 2014
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Florida backlash

In a post entitled, “A holiday message from the creative class to Richard Florida — screw you,” Mark Palko argues that Florida’s famous theories about the rise of the creative class have not held up over time: Florida paints a bright picture of these people and their future, with rapidly increasing numbers, influence and wealth. […]The post Florida backlash appeared first on Statistical Modeling, Causal Inference, and Social Science.

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Adding labels within lattice panels by group

February 18, 2014
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Adding labels within lattice panels by group

The other day I had data that showed the development of many products over time. I grouped the products into categories and visualised the data as line graphs in lattice. But instead of adding an extensive legend to the plot I wanted to add labels to e...

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TV analysis

February 17, 2014
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TV attribution is one of the hardest problems to get right in all web analytics. To be clear, attribution is how marketers make sense out of their spend, so they know where to invest more or less in the future. Since attribution, for most companies, is...

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The Washington Post reprints university press releases without editing them

February 17, 2014
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Somebody points me to this horrifying exposé by Paul Raeburn on a new series by the Washington Post where they reprint press releases as if they are actual news. And the gimmick is, the reason why it’s appearing on this blog, is that these are university press releases on science stories. What could possibly go […]The post The Washington Post reprints university press releases without editing them appeared first on…

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Repost: Ronald Fisher is one of the few scientists with a legit claim to most influential scientist ever

February 17, 2014
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Repost: Ronald Fisher is one of the few scientists with a legit claim to most influential scientist ever

Editor's Note: Ronald  This is a repost of the post "R.A. Fisher is the most influential scientist ever" with a picture of my pilgrimage to his  gravesite in Adelaide, Australia.  You can now see profiles of famous scientists on Google Scholar citations. … Continue reading →

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Happy Birthday Sir Ronald Fisher

February 17, 2014
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Happy Birthday Sir Ronald Fisher

Ronald Aylmer Fisher.Born: 17 February, 1890, in East Finchley, London, England Knighted: 1952Other major Honours: Fellow of the Royal Society (1929), Royal Medal (1938), Guy Medal in Gold (1947), Copley Medal (1956), Darwin-Wallace Meda...

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Thoughts on "Factor-Augmented VAR’s"

February 17, 2014
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Let's use the standard term, principal-components regression (PCR). It's irrelevant whether it's a "regular" regression or an autoregression, univariate or multivariate. Econometricians have always liked PCR. (I am no exception.) In this "data-rich" ag...

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On deck this week

February 17, 2014
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Mon: The Washington Post reprints university press releases without editing them Tues: Florida backlash Wed: The replication and criticism movement is not about suppressing speculative research; rather, it’s all about enabling science’s fabled self-correcting nature Thurs: Do differences between biology and statistics explain some of our diverging attitudes regarding criticism and replication of scientific claims? […]The post On deck this week appeared first on Statistical Modeling, Causal Inference, and Social…

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SoFiE Facebook Group and More

February 17, 2014
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SoFiE Facebook Group and More

The next Society for Financial Econometrics (SoFiE) Facebbok Group member will be our 1000th!  If you're not a member of the Facebook group, simply go to https://www.facebook.com/groups/sofienyu/ to join. Related, may I please ask you to...

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The missing value trick for scoring a regression model

February 17, 2014
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The missing value trick for scoring a regression model

A fundamental operation in statistical data analysis is to fit a statistical regression model on one set of data and then evaluate the model on another set of data. The act of evaluating the model on the second set of data is called scoring. One of first "tricks" that I [...]

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