000083148 001__ 83148
000083148 005__ 20180317093239.0
000083148 037__ $$aREP_WORK
000083148 245__ $$aDetecting Group Interest-level in Meetings
000083148 269__ $$a2004
000083148 260__ $$aMartigny, Switzerland$$bIDIAP$$c2004
000083148 336__ $$aReports
000083148 500__ $$aSubmitted for publication.
000083148 520__ $$aFinding relevant segments in meeting recordings is important for summarization, browsing, and retrieval purposes. In this paper, we define relevance as the interest-level that meeting participants manifest as a group during the course of their interaction (as perceived by an external observer), and investigate the automatic detection of segments of high-interest from audio-visual cues. This is motivated by the assumption that there is a relationship between segments of interest to participants, and those of interest to the end user, e.g. of a meeting browser. We first address the problem of human annotation of group interest-level. On a 50-meeting corpus, recorded in a room equipped with multiple cameras and microphones, we found that the annotations generated by multiple people exhibit a good degree of consistency, providing a stable ground-truth for automatic methods. For the automatic detection of high-interest segments, we investigate a methodology based on Hidden Markov Models (HMMs) and a number of audio and visual features. Single- and multi-stream approaches were studied. Using precision and recall as performance measures, the results suggest that (i) the automatic detection of group interest-level is promising, and (ii) while audio in general constitutes the predominant modality in meetings, the use of a multi-modal approach is beneficial.
000083148 6531_ $$aspeech
000083148 6531_ $$avision
000083148 6531_ $$alearning
000083148 6531_ $$amccowan
000083148 6531_ $$agatica
000083148 6531_ $$azhang
000083148 6531_ $$abengio
000083148 700__ $$0241066$$aGatica-Perez, Daniel$$g171600
000083148 700__ $$aMcCowan, Iain A.
000083148 700__ $$aZhang, Dong
000083148 700__ $$0243961$$aBengio, Samy$$g140142
000083148 8564_ $$uhttp://publications.idiap.ch/downloads/reports/2004/gatica-rr-04-51.pdf$$zURL
000083148 8564_ $$s85593$$uhttps://infoscience.epfl.ch/record/83148/files/gatica-rr-04-51.pdf$$zn/a
000083148 909CO $$ooai:infoscience.tind.io:83148$$preport$$pSTI
000083148 909C0 $$0252189$$pLIDIAP$$xU10381
000083148 937__ $$aEPFL-REPORT-83148
000083148 970__ $$agatica-rr-04-51/LIDIAP
000083148 973__ $$aEPFL$$sPUBLISHED
000083148 980__ $$aREPORT