Realtime Ad Hoc Search in Twitter: Know-Center at TREC Microblog Track 2011. - Christopher Horn; Oliver Pimas; Michael Granitzer; Elisabeth Lex (TREC, 2011)

Measuring the quality of web content using factual information. - Elisabeth Lex; Michael Völske; Marcelo Errecalde; Edgardo Ferretti; Leticia C. Cagnina; Christopher Horn; Benno Stein 001; Michael Granitzer (WebQuality@WWW, 2012)

Using Factual Density to Measure Informativeness of Web Documents. - Christopher Horn; Alisa Zhila; Alexander F. Gelbukh; Roman Kern; Elisabeth Lex (NODALIDA, 2013)

Deriving Public Transportation Timetables with Large-Scale Cell Phone Data. - Christopher Horn; Roman Kern (ANT/SEIT, 2015)

Map-Matching Cell Phone Trajectories of Low Spatial and Temporal Accuracy. - Gunnar Schulze; Christopher Horn; Roman Kern (ITSC, 2015)

Privacy Issues for Cloud Systems. - Christopher Horn; Marina Tropmann-Frick (DEXA Workshops, 2018)

Inferring fine-grained transport modes from mobile phone cellular signaling data. - Kimberley Chin; Haosheng Huang; Christopher Horn; Ivan Kasanicky; Robert Weibel (Comput. Environ. Urban Syst., 2019)