We describe a new corpus of over 180,000 handannotated dialog act tags and accompanying adjacency pair annotations for roughly 72 hours of speech from 75 naturally-occurring meetings. We provide a brief summary of the annotation system and labeling procedure, inter-annotator reliability statistics, overall distributional statistics, a description of auxiliary files distributed with the corpus, and information on how to obtain the data.

Dialog act annotation potentially provides a means to aid information retrieval and summarization of meeting data. This work presents an in-depth view of the annotation methods of both the dialog act annotation and adjacency pair labeling schemes used for the Meeting Recorder data. Additionally, detailed descriptions of the individual tags within the Meeting Recorder Dialog Act tagset are provided. Issues such as utterance segmentation as well as numerous examples from the meeting data are found within this work.

In early 2001 we reported (at the Human Language Technology meeting) the early stages of an ICSI project on processing speech from meetings (in collaboration with other sites, principally SRI, Columbia, and UW). In this paper we report our progress from the first few years of this effort, including: the collection and subsequent release of a 75-meeting corpus (over 70 meeting-hours and up to 16 channels for each meeting); the development of a prosodic database for a large subset of these meetings, and its subsequent use for punctuation and disfluency detection; the development of a dialog annotation scheme and its implementation for a large subset of the meetings; and the improvement of both near-mic and far-mic speech recognition results for meeting speech test sets.

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