Jürgen T. Geiger Frank Wallhoff Gerhard Rigoll GMM-UBM based open-set online speaker diarization. 2330-2333 2010 INTERSPEECH https://doi.org/10.21437/Interspeech.2010-638 conf/interspeech/2010 db/conf/interspeech/interspeech2010.html#GeigerWR10