OpenGeist is a RESTful interface that captures insights into the zeitgeist of Wikipedia users. The system is an interface for clustering and comparing concepts based on the time series of the number of views of their Wikipedia page.

For questions, contact Maria-Hendrike Peetz: m.h.peetz AT uva DOT nl and see


Raw Time Series

Similar Time Series

Clustered Category

The gallery features more examples.


Peetz M-H., Meij E.,de Rijke M., "OpenGeist: Insight in the Stream of Page Views on Wikipedia",
SIGIR 2012 Workshop on Time-aware Information Access: August, 2012. Bibtex | download publication


We would like to thank the volunteers at the Wikimedia Foundation for the data.

This research was partially supported by the European Union’s ICT Policy Support Programme as part of the Competitiveness and Innovation Framework Programme, CIP ICT- PSP under grant agreement nr 250430, the European Community’s Seventh Framework Programme (FP7/2007-2013) under grant agreements nr 258191 (PROMISE Network of Excellence) and 288024 (LiMoSINe project), the Netherlands Organisation for Scientific Research (NWO) under project nrs 612.061.814, 612.061.815, 640.- 004.802, 380-70-011, 727.011.005, 612.001.116, the Center for Creation, Content and Technology (CCCT), the Hyperlocal Service Platform project funded by the Service Innovation and ICT program, the WAHSP and BILAND projects funded by the CLARIN-nl program, the Dutch national program COMMIT, and by the ESF Research Network Program ELIAS.


24 October 2012

Demonstration of the system at ICT Delta.

10 October 2012

First stable release of OpenGeist. Known bugs are

  1. One month of data is missing.
  2. Image quality is low.

16 August 2012

Presentation of the system at TAIA.