Ground truth set for monitoring shifts in vocabulary over time

We made a manually annotated ground truth dataset for evaluating algorithms that detect shifts in vocabularies over time. The research is described in
Ad Hoc Monitoring of Vocabulary Shifts over Time, Tom Kenter, Melvin Wevers, Pim Huijnen, Maarten de Rijke, CIKM 2015.

The data is made publicly available in this Bitbucket repository.