Where did i go wrong?: identifying troublesome segments for speaker diarization systems
Mary Tai Knox, Nikki Mirghafori, Gerald H Friedland · 2012
The focus of this work is to identify types of segments that are difficult for speaker diarization systems. The diarization outputs of five state-of-the-art systems are analyzed on short/long seg-ments as well as segments surrounding speaker changepoints. We found that for all five systems as the duration of the segment decreased the diarization error rate (DER) increased. Also, seg-ments immediately preceding and following speaker change-points performed much worse than their respective counter-parts. In fact, at least 40 % of the DER for all five systems is attributed to time within 0.5 seconds of a speaker changepoint. We hope the results of this work motivate future improvements of speaker diarization systems. Index Terms: speaker diarization, error analysis, rich transcrip-tion