Capture all changes to an application state as a sequence of events.
We can query an application's state to find out the current state of the world, and this answers many questions. However there are times when we don't just want to see where we are, we also want to know how we got there.
National Alcohol Screening Day (NASD): annually on Thursday of the first full week of April.
National Depression Screening Day (NDSD): : annually during Mental Illness Awareness Week in October.
M. Atzmueller, и B. Kloepper. Proc. International Conference on Intelligent Data Engineering and Automated Learning, Workshop on Methods for Interpretation of Industrial Event Logs, Heidelberg, Germany, Springer Verlag, ((accepted) 2018)