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
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.