hours 4 for a threshold of 2 when training over transcripts for one third of a lecture.
it can be concluded that, despite being computationally more intensive than a heuristic approximation (for which the learning time is on the order of just a few minutes), a TBL system using a global, WERcorrelated scoring function not only produces better transcripts, but also produces them in a feasible amount of time with only a small amount of manual transcription for each lecture.