Erratum to:

Informatik Spektrum (2022)

https://doi.org/10.1007/s00287-022-01487-8

This article was unintentionally published twice in this journal, by the same authors. Following should be considered the version of record and used for citation purposes: “Christensen, S., Tomforde, S. Reinforcement learning as a basis for cross domain fusion of heterogeneous data. Informatik Spektrum 45, 214–217 (2022). https://doi.org/10.1007/s00287-022-01468-x”.

The duplicate “Christensen, S., Tomforde, S. Reinforcement learning as a basis for cross domain fusion of heterogeneous data. Informatik Spektrum 45, 295–299 (2022). https://doi.org/10.1007/s00287-022-01487-8” is to be ignored.

Peter Pagel apologizes to the readers of the journal for not detecting the duplication during the publication process.