There are some experiments that use a relatively big dataset (100 of authors), each one with 30 documents (to be used as training, validation and test). Then y

There are some experiments that use a relatively big dataset (100 of authors), each one with 30 documents (to be used as training, validation and test). Then you try for authorship (who is the author of _this_ document?) and get it right for 80% of the tries. Or get that the author is in the top-5 100% of the tries. Perhaps those techniques aren't enough to find out the author from the whole world population but are useful enough to reduce the scope of some investigation inside some campus,for example. (Disclaimer: PhD about it)