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What can we ask respondents in terms of data donation?
With this mixed-mode feasibility pilot, we assessed whether data donation of energy usage via a smart-meter dongle is suitable for official statistics on device-level energy use.
Machine learning transport mode prediction in a smartphone-based travel survey
An evaluation of different of a machine-learning algorithms for transport mode classification in the CBS travel app.
Experiment smartphone-first questionnaire layout
This paper presents the purpose, design, and results of a large-scale field experiment investigating the effects of a smartphone-first redesign of the login process and questionnaire layout for CBS...
Rule-based transport mode classification in a smart travel and mobility survey
Rule-based transport mode classification in a smartphone-based travel survey
New methods to correct data
Scholtus designed a number of new algorithms to automatically correct systematic errors
Big data and methodological challenges
Big data and methodological challenges
Estimating unemployment levels using a mix of three interview modes
Extending the Materials Monitor with Water
Profiling of twitter users a big data selectivity study
Extending the Materials Monitor with Water