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Christopher Gandrud
Works at Hertie School of Governance
Attended London School of Economics
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Christopher Gandrud

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A Link Between topicmodels LDA and LDAvis
Carson Sievert and Kenny Shirley have put together the really nice LDAvis R package. It provides a Shiny-based interactive interface for exploring the output from Latent Dirichlet Allocation topic models. If you've never used it, I highly recommend checking...
Carson Sievert and Kenny Shirley have put together the really nice LDAvis R package. It provides a Shiny-based interactive interface for exploring the output from Latent Dirichlet Allocation topic models. If you've never used it, I highly recommend checking out their XKCD example (this paper ...
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Simulated or Real: What type of data should we use when teaching social science statistics?
I just finished teaching a new course on collaborative data science to social science students. The materials are on GitHub if you're interested. What did we do and why? Maybe the most unusual thing about this class from a statistics pedagogy perspective wa...
Simulated or Real: What type of data should we use when teaching social science statistics? I just finished teaching a new course on collaborative data science to social science students. The materials are on GitHub if you're interested.
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Set up R/Stan on Amazon EC2
A few months ago I posted the script that I use to set up my R/JAGS working environment on an Amazon EC2 instance. Since then I've largely transitioned to using R/ Stan to
estimate my models. So, I've updated my setup script (see below). There are a few oth...
A few months ago I posted the script that I use to set up my R/JAGS working environment on an Amazon EC2 instance. Since then I've largely transitioned to using R/Stan to estimate my models. So, I've updated my setup script (see below). There are a few other changes: ...
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Do Political Scientists Care About Effect Sizes: Replication and Type M Errors
Reproducibility has come a long way in political science since I began my PhD all the way back in 2008. Many major journals now require replication materials be made available either on their websites or some service such as the Dataverse Network . This is ...
Reproducibility has come a long way in political science since I began my PhD all the way back in 2008. Many major journals now require replication materials be made available either on their websites or some service such as the Dataverse Network. This is certainly progress.
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Slides for a simple introduction to Bayesian data analysis
Here is the slide deck from a simple introductory talk I gave yesterday on Bayesian data analysis:
Here is the slide deck from a simple introductory talk I gave yesterday on Bayesian data analysis: Posted by Christopher Gandrud at 10:39 · Email ThisBlogThis!Share to TwitterShare to FacebookShare to Pinterest. Labels: Bayesian, data analysis teaching. No comments: Post a Comment ...
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Updates to repmis: caching downloaded data and Excel data downloading
Over the past few months I’ve added a few improvements to the repmis –miscellaneous functions for reproducible research–R package. I just want to briefly highlight two of them: Caching downloaded data sets. source_XlsxData for downloading data in Excel form...
Caching. When working with data sourced directly from the internet, it can be time consuming (and make the data hoster angry) to repeatedly download the data. So, repmis's source functions ( source_data , source_DropboxData , and source_XlsxData ) can now cache a downloaded data set by setting ...
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European Parliament Candidates Have a Unique Opportunity to Advocate for Banking Union Transparency and Accountability
This is reposted from the original on the Hertie School of Governance European Elections blog . The discussion of issues around the European Parliament Elections has been beating around the bush for quite some time now. Karlheinz Reif and Hermann Schmitt fa...
The discussion of issues around the European Parliament Elections has been beating around the bush for quite some time now. Karlheinz Reif and Hermann Schmitt famously described European Elections as ”second-order elections”, in that they are secondary to national elections.
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Our developing Financial Regulatory Transparency Index
Here is a presentation I just gave on a work in-progress. We are developing a new Financial Regulatory Transparency Index using a Bayesian IRT approach.
Here is a presentation I just gave on a work in-progress. We are developing a new Financial Regulatory Transparency Index using a Bayesian IRT approach. Posted by Christopher Gandrud at 13:51 · Email ThisBlogThis!Share to TwitterShare to FacebookShare to Pinterest ...
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Note to self: brew cleanup r
Note to self: after updating R with Homebrew remember to cleanup old versions: brew cleanup r Otherwise I'm liable to get a segfault . ( see also )
Note to self: after updating R with Homebrew remember to cleanup old versions: brew cleanup r. Otherwise I'm liable to get a segfault. (see also). Posted by Christopher Gandrud at 10:51 · Email ThisBlogThis!Share to TwitterShare to FacebookShare to Pinterest. Labels: homebrew, install.packages, ...
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Simple script from setting up R, Git, and Jags on Amazon EC2 Ubuntu Instance
Just wanted to put up the script I've been using to create an Amazon EC2 Ubuntu instance for running RStudio, Git, and Jags. There isn't anything really new in here, but it it has been serving me well. The script begins after the basic instance has been set...
Just wanted to put up the script I've been using to create an Amazon EC2 Ubuntu instance for running RStudio, Git, and Jags. There isn't anything really new in here, but it it has been serving me well. The script begins after the basic instance has been set up in the Amazon EC2 console (yhat has ...
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d3Network Plays Nice with Shiny Web Apps
After some delay (and because of helpful prompting by Giles Heywood and code contributions by John Harrison ) d3Network now plays nicely with Shiny web apps . This means you can fully integrate R/D3.js network graphs into your web apps. Here is what one sim...
After some delay (and because of helpful prompting by Giles Heywood and code contributions by John Harrison) d3Network now plays nicely with Shiny web apps. This means you can fully integrate R/D3.js network graphs into your web apps. Here is what one simpleexample looks like: ...
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Education
  • London School of Economics
  • McGill University
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  • Hertie School of Governance
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