Introduction

2000 Communicator Dialogue Act Tagged was produced by Linguistic Data Consortium (LDC) catalog number LDC2004T15 and ISBN 1-58563-305-4.

This corpus is an addendum to the 2000 Communicator Evaluation corpus produced by the LDC in 2002. This addendum contains annotations on the transcriptions of the system and user utterances as taken from the logfiles of the 2000 Communicator Evaluation corpus.

Dialogue Act annotations are provided for system utterances in the dialogues. The dialogue act tags follow the DATE (Dialogue Act Tagging for Evaluation) scheme. In addition, both system and user utterances are tagged for named entities. For further description of the 2000 Communicator Evaluation corpus, please refer to the main publication from 2002 (LDC2002S56).

Data

The complete Dialogue Act annotated corpus is available as a single XML text file totalling approximately 16 MB.

The total number of dialogues is 648. There are 314,223 words (tokens) and 1,403,985 unique words.

Each dialogue is segmented into system and user turns. The total number of turns for the entire corpus is 24,728 (13,013 system turns and 11,715 user turns).

Except for one system, no utterance segmentation was done within the turns in the logfiles. The number of utterances is therefore the same as the number of turns. Utterance segmentation is carried out and reflected as the dialogue act segmentation. The total number of tagged dialogue acts is 22,701 with 61 unique tags. There are a total of 275,938 words in the system utterances and a total of 38,285 words in the user utterances.

Dialogue Act tagging was done automatically via pattern matching with human-labeled dialogue utterances used by the nine different participating Communicator Systems. Named entity tagging also followed the same methodology.

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Updates

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Content Copyright

Portions © 2004 Trustees of the University of Pennsylvania