This page contains documentation on the TDT4 Multilingual Text and Annotations, Linguistic Data Consortium (LDC) catalog number LDC2005T16 and ISBN 1-58563-339-9.
The TDT4 corpora were created by Linguistic Data Consortium with support from the DARPA TIDES (Translingual Information Detection, Extraction and Summarization) Program. This release contains the complete set of English, Arabic and Chinese news text (broadcast news transcripts and newswire data) used in the 2002 and 2003 Topic Detection and Tracking technology evaluations, along with topic annotations created for those evaluations. The audio corresponding to the broadcast news transcripts contained in this release can be found in LDC Publication LDC2005S11, TDT4 Multilingual Broadcast News Speech Corpus.
Topic Detection and Tracking (TDT) refers to automatic techniques for finding topically related material in streams of data such as newswire and broadcast news. Evaluation tasks in 2002 and 2003 included the segmentation of a news source into stories, the tracking of known topics, the detection of unknown topics, the detection of initial stories on unknown topics, and the detection of pairs of stories on the same topic. Complete documentation on the TDT evaluation program can be found on NIST's TDT website.
For further information about corpora and annotations to support the TDT Program visit LDC's TDT information pages.
To see an example of this corpus, please examine this sample. This sample is an English translation from an Arabic news broadcast. The translation is the product of the IBM Arabic to English translation engine.
Portions © 2000-2001: Xinhua News Agency, Agence France Presse, New York Times, The Associated Press, SPH AsiaOne Ltd, An Nahar, Al Hayat, Nile TV, Public Radio International, Cable News Network, LP, LLP, American Broadcasting Company, National Broadcasting Company, Inc., China National Radio, China Television System, China Central TV, China Broadcasting System, © 2002, 2003, 2005 Trustees of the University of Pennsylvania
The World is a co-production of Public Radio International and the British Broadcasting Corporation and is produced at WGBH Boston.