[x] Merge slides in xx-cost-sensitive and xx-imbalanced into xx-costsens-imbalanced (the structure of the lecture is determined by the slideset in xx-costsens-imbalanced)
[x] Read over slides: does the structure make sense? Review notation, spell checker, ...
[ ] Read cost-sensitive paper and compare with our slides. Is there anything missing?
[ ] fill 8 / 9 (probably shorten to one slide)
[ ] Posterior threshold tuning multiclass - are there approaches to it?
[x] fill all "empty" slides as good as possible
[x] 30 / 31: short recap about evaluation measures for imbalanced data (--> I2ML)