Search Contact information
University of Cambridge Home Department of Engineering
University of Cambridge > Engineering Department > Machine Intelligence Lab

Abstract for johnson_eurospeech99

Proc Eurospeech '99 (Budapest, Hungary, September 1999).


S.E. Johnson

September 1999

The problem of labelling speaker turns by automatically segmenting and clustering a continuous audio stream is addressed. A new clustering scheme is presented and evaluated using a clustering efficiency score which treats both agglomerative and divisive clustering strategies equally. Results show an efficiency of 70% can be obtained on both manually and automatically derived segments on the 1996 Hub4 development data.

For the task of identifying potentially unknown anchor speakers within broadcast news shows, the frame classification error rate is very important. To reflect this, a frame-based cluster efficiency is defined and the results show a 90% frame-based efficiency can be achieved. Finally a frame-based comparison between the manually and automatically derived segment/cluster sets shows that approximately one third of the errors are introduced during segmentation and two-thirds during clustering.

| (ftp:) | (http:) | (ftp:) johnson_eurospeech99.pdf | (http:) johnson_eurospeech99.pdf | (http:) johnson_eurospeech99.html/ |

If you have difficulty viewing files that end '.gz', which are gzip compressed, then you may be able to find tools to uncompress them at the gzip web site.

If you have difficulty viewing files that are in PostScript, (ending '.ps' or '.ps.gz'), then you may be able to find tools to view them at the gsview web site.

We have attempted to provide automatically generated PDF copies of documents for which only PostScript versions have previously been available. These are clearly marked in the database - due to the nature of the automatic conversion process, they are likely to be badly aliased when viewed at default resolution on screen by acroread.

© 2005 Cambridge University Engineering Dept
Information provided by milab-maintainer