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stm

An R Package for the Structural Topic Model

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Download the Vignette

Authors: Molly Roberts, Brandon Stewart and Dustin Tingley

Please email all comments/questions to bms4 [AT] princeton.edu

Summary

The Structural Topic Model is a general framework for topic modeling with document-level covariate information. The covariates can improve inference and qualitative interpretability and are allowed to affect topical prevalence, topical content or both. The software package implements the estimation algorithms for the model and also includes tools for every stage of a standard workflow from reading in and processing raw text through making publication quality figures.

The package currently includes functionality to:

Methods Papers

Supporting Packages

Published Applications

If you have published a paper using stm that you would like to see included here please email us.

  1. Tingley, Dustin. "Rising Power on the Mind" International Organization. Forthcoming.
  2. Munksgaard, Rasmus and Jakob Demant. "Mixing politics and crime- thre prevalence and decline of political discourse on the cryptomarket." International Journal of Drug Policy. 2016.
  3. Huff, Connor and Dominika Kruszewska. "Banners, Barricades, and Bombs The Tactical Choices of Social Movements and Public Opinion" Comparative Political Studies. 2016.
  4. Bail, Christopher A. "Cultural carrying capacity: Organ donation advocacy, discursive framing, and social media engagement." Social Science & Medicine. 2016.
  5. Law, David S. "Constitutional Archetypes" Texas Law Review. 2016.
  6. Farrell, Justin. "Corporate funding and ideological polarization about climate change" Proceedings of the National Academy of Sciences. 2016.
  7. Wang, Baiyang and Diego Klabjan. "Temporal Topic Analysis with Endogenous and Exogenous Processes." Thirtieth AAAI Conference on Artificial Intelligence. 2016.
  8. Reich, Stewart, Mavon and Tingley "The Civic Mission of MOOCs: Measuring Engagement across Political Differences in Forums." Association for Computing Machinery: Learning at Scale. 2016.
  9. Tvinnereim, Endre and Kjersti Flottum. "Explaining topic prevalence in answers to open-ended survey questions about climate change" Nature Climate Change. 2015.
  10. Milner, Helen and Dustin Tingley. Sailing the Water's Edge: The Domestic Politics of American Foreign Policy . Princeton University Press. 2015.
  11. Romney, David, Brandon Stewart and Dustin Tingley. " Plain Text: Transparency in the Acquisition, Analysis, and Access Stages of the Computer-assisted Analysis of Texts." Qualitative and Multi-Method Research. 2015.
  12. Genovese, Federica. "Politics ex cathedra: Religious authority and the Pope in modern international relations" Research & Politics 2015.
  13. Reich, Tingley, Leder-Luis, Roberts and Stewart. "Computer-Assisted Reading and Discovery for Student Generated Text in Massive Open Online Courses" Journal of Learning Analytics. 2015.

Installation Instructions

The package is available on CRAN and can be installed using:

install.packages("stm")

You can always get the most stable development release from the Github repository. Assuming you already have R installed (if not see http://www.r-project.org/), the easiest way to install from the Github repository is to use the devtools package. First you have to install devtools using the following code. Note that you only have to do this once

if(!require(devtools)) install.packages("devtools")

Then you can load the package and use the function install_github

library(devtools)
install_github("bstewart/stm",dependencies=TRUE)

Note that this will install all the packages suggested and required to run our package. It may take a few minutes the first time, but this only needs to be done on the first use. In the future you can update to the most recent development version using the same code.

You can also grab the binaries or source files for the latest release here: (https://github.com/bstewart/stm/releases). Then use install.packages with repos=NULL so that

install.packages(filepath, repos = NULL)

Getting Started

See the vignette for several example analyses. The main function to estimate the model is stm() but there are a host of other useful functions. If you have your documents already converted to term-document matrices you can ingest them using readCorpus(). If you just have raw texts you will want to start with textProcessor().

Have a large text corpus or need a language we don't provide support for? See our sister project txtorg