Bayesian Data Analysis [BDA3]

March 27, 2014
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Bayesian Data Analysis [BDA3]

Andrew Gelman and his coauthors, John Carlin, Hal Stern, David Dunson, Aki Vehtari, and Don Rubin, have now published the latest edition of their book Bayesian Data Analysis. David and Aki are newcomers to the authors’ list, with an extended section on non-linear and non-parametric models. I have been asked by Sam Behseta to write […]

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Bouncing Graphic Replays Human Heartbeat Dynamics of Yesterday

March 27, 2014
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Bouncing Graphic Replays Human Heartbeat Dynamics of Yesterday

One Human Heartbeat [onehumanheartbeat.com] by data scientist and communicator Jen Lowe displays the dynamics of Jen's heartbeat from about one day ago. The data is captured by a Basis B1 band, which is able to detect one's heart rate by measuring t...

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Beyond the Valley of the Trolls

March 27, 2014
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Beyond the Valley of the Trolls

In a further discussion of the discussion about the discussion of a paper in Administrative Science Quarterly, Thomas Basbøll writes: I [Basbøll] feel “entitled”, if that’s the right word (actually, I’d say I feel privileged), to express my opinions to anyone who wants to listen, and while I think it does say something about an […]The post Beyond the Valley of the Trolls appeared first on Statistical Modeling, Causal Inference,…

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Dealing with adapted data

March 27, 2014
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Reader Daniel T. is unhappy about this analysis of the intraday Internet usage by OS and device types. He doesn't like their choice of index, which I'll get to in a second post. (Link appears here when ready.) There is something else wrong with this type of analysis. Let's do a thought experiment. If you are a marketer interested in the diurnal variability in Internet usage, what are some of…

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Phil 6334:Misspecification Testing: Ordering From A Full Diagnostic Menu (part 1)

March 27, 2014
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Phil 6334:Misspecification Testing: Ordering From A Full Diagnostic Menu (part 1)

 We’re going to be discussing the philosophy of m-s testing today in our seminar, so I’m reblogging this from Feb. 2012. I’ve linked the 3 follow-ups below. Check the original posts for some good discussion. (Note visitor*) “This is the kind of cure that kills the patient!” is the line of Aris Spanos that I […]

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Seasonal Unit Roots

March 27, 2014
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As discussed in the MAT8181 course, there are – at least – two kinds of non-stationary time series: those with a trend, and those with a unit-root (they will be called integrated). Unit root tests cannot be used to assess whether a time ser...

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New research journal on observational studies

March 26, 2014
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Dylan Small writes: I am starting an observational studies journal that aims to publish papers on all aspects of observational studies, including study protocols for observational studies, methodologies for observational studies, descriptions of data sets for observational studies, software for observational studies and analyses of observational studies. One of the goals of the journal is […]The post New research journal on observational studies appeared first on Statistical Modeling, Causal Inference,…

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MCMC for Econometrics Students – IV

March 26, 2014
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MCMC for Econometrics Students – IV

This is the fourth in a sequence of posts designed to introduce econometrics students to the use of Markov Chain Monte Carlo (MCMC, or MC2) simulation methods for Bayesian inference. The first three posts can be found here, here, and here, and I'll ass...

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Big Data Without Statisticians: BD2K Symposium At UCLA

March 26, 2014
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UCLA is having a big data conference on Thursday and Friday Mar 27, 28 2014.  The conference is organized by four computer science and genomic biology types. Speakers cluster [one of the rare appropriate uses of cluster analysis I know of] into three...

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Big Data Without Statisticians: BD2K Symposium At UCLA

March 26, 2014
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UCLA is having a big data conference on Thursday and Friday Mar 27, 28 2014.  The conference is organized by four computer science and genomic biology types. Speakers cluster [one of the rare appropriate uses of cluster analysis I know of] into three...

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A non-comprehensive comparison of prominent data science programs on cost and frequency.

March 26, 2014
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A non-comprehensive comparison of prominent data science programs on cost and frequency.

We did a really brief comparison of a few notable data science programs for a grant submission we were working on. I thought it was pretty fascinating, so I'm posting it here. A couple of notes about the table. 1. Our … Continue reading →

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Is a steal really worth 9 points?

March 26, 2014
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Is a steal really worth 9 points?

Theodore Vasiloudis writes: I’d like to bring your attention to this article by Benjamin Morris discussing the value of steals for the NBA. The author argues that a steal should be a highly sought after statistic as it equates to higher chances of victory and is very hard to replace when a player is injured. […]The post Is a steal really worth 9 points? appeared first on Statistical Modeling, Causal…

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Color scatter plot markers by values of a continuous variable in SAS

March 26, 2014
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Color scatter plot markers by values of a continuous variable in SAS

When I visualize three-dimensional data, I prefer to use interactive graphics. For example, I often use the rotating plot in SAS/IML Studio (shown at the left) to create a three-dimensional scatter plot. The interactive plot enables me to rotate the cloud of points and to use a pointer to select […]

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Congratulations to My Colleague!

March 26, 2014
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Congratulations to My Colleague!

This afternoon I had the pleasure of attending the annual Teaching, Research, and Service Awards ceremony for our Faculty of Social Sciences here at the University of Victoria. Our Dean, Peter Keller, does a great job with this event. I was especially ...

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Practical Data Science with R: Release date announced

March 26, 2014
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Practical Data Science with R: Release date announced

It took a little longer than we’d hoped, but we did it! Practical Data Science with R will be released on April 2nd (physical version). The eBook version will follow soon after, on April 15th. You can preorder the pBook now on the Manning book page. The physical version comes with a complimentary eBook version […] Related posts: Data Science, Machine Learning, and Statistics: what is in a name? Setting…

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Three SQL Constructs You Can Forget About

March 25, 2014
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SQL is a very powerful language, which could, of course, be made even more powerful and useful.  This post discusses three features of the language -- ANSI standard features -- that seem not only unnecessary but downright detrimental.  That i...

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HBR, Webinar, Nate Silver, Krugman, writing about data

March 25, 2014
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HBR, Webinar, Nate Silver, Krugman, writing about data

A revised version of my previous post is picked up by Harvard Business Review (link). This post introduces the OCCAM framework for Big Data that I have been speaking about at my book talks (upcoming events are listed on the right column of the blog). The OCCAM framework identifies five elements of today's data sets that present challenges compared to traditional data sets. These challenges are not new but they…

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How to Calculate Regression Coefficients without Data

March 25, 2014
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I’m going to derive the regression formulas without assuming “normality” and in such a way that the coefficients can be calculated from first principles without data. This’ll look magical to anyone who didn’t get the post ...

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A statistical graphics course and statistical graphics advice

March 25, 2014
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Dean Eckles writes: Some of my coworkers at Facebook and I have worked with Udacity to create an online course on exploratory data analysis, including using data visualizations in R as part of EDA. The course has now launched at https://www.udacity.com/course/ud651 so anyone can take it for free. And Kaiser Fung has reviewed it. So definitely feel free […]The post A statistical graphics course and statistical graphics advice appeared first on Statistical Modeling,…

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An easy way to get started with automatic essay scoring

March 25, 2014
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An easy way to get started with automatic essay scoring

Wow, it's been way too long since I have updated this blog! I am going to start making more frequent updates, and I have some cool things in the pipeline, so bear with me. Last year, I wrote this post on automated essay scoring. This was essentially distilling my experience with automated essay scoring and trying to introduce it to people unfamiliar with it. I got a lot of great…

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Update on Dataviz Workshop 3

March 25, 2014
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My chart making workshop has passed the point where each participant (except one) has presented the first draft of his or her project, and the class has opined on these efforts. Previously, I posted the syllabus of the course here....

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An easy way to get started with automated essay scoring

March 25, 2014
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An easy way to get started with automated essay scoring

Wow, it’s been way too long since I have updated this blog! I am going to start making more frequent updates, and I have some cool things in the pipeline, so bear with me.

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Sankey diagrams with googleVis

March 25, 2014
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Sankey diagrams with googleVis

Sankey diagrams are great for visualising flows from one set of data values to another. Although named after Irish Captain Matthew Henry Phineas Riall Sankey, who used this type of diagram in 1898 to show the energy efficiency of a steam engine, the be...

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