• Textual resources
• Speech resources
• Resources from Previous Tests (Topics/Assessments)

Textual resources

The following textual resources are available from the LDC for SDR recognition/retrieval training:

• LDC95T21 North American News Text Corpus:

Source	Dates Covered	Approx. # Words (Millions)
Los Angeles Times & Washington Post	05/94-08/97	52
New York Times News Syndicate	07/94-12/96	173
Reuters News Service (General & Financial)	04/94-12/96	85
Wall Street Journal	07/94-12/96	40




• LDC98T30 North American News Text Supplement:

Source	Dates Covered	Approx. # Words (Millions)
Los Angeles Times & Washington Post	09/97-04/98	11
New York Times News Syndicate	01/97-04/98	116
Associated Press World Stream English	11/94-04/98	143




• LDC99E12 SDR-99 Text Compendium:

Source	Dates Covered	Approx. # Words (Millions)
New York Times News Syndicate	01/98 - 06/98	18
Associated Press World Stream English	01/98 - 06/98	32




• LDC99E13 North American News Text Supplement 2:
  

Source	Dates Covered	Approx. # Words (Millions)
Los Angeles Times and Washington Post	05/98 - 06/98	---

Some of this material is contemporaneous with the 1999 SDR test material and may be used by sites wishing to create rolling language model recognition systems for the recognition component of the SDR Track. Contemporaneous data may not be used in creating traditional fixed language model recognition systems for the SDR task.

Note that some of these materials overlap.

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Speech resources

A compendium containing the 1998 Hub-4 English Language training, development test, and evaluation test transcripts in the Universal Transcription Format (UTF) is available from the LDC via LDC Order Number LDC98E10. A subset of the transcripts in this release have been SGML-tagged with named-, numeric- and time-entities and provided the training and development test reference transcripts for the 1998 Information Extraction - Named Entity Spoke. Contact the LDC to obtain this release.

The Hub-4 Broadcast News corpora are licensed through the Linguistic Data Consortium (LDC) and are subject to usage restrictions. Contact the LDC for license agreement information.

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Resources from Previous Tests (Topics/Assessments)

The following resources that were used in the previous tests could still be used for current tests:

• Resources from TREC-6 SDR97:
  • Website
  • Topics
  • Assessments
  • Papers
  
  
  • Topics and assessments contributed by Cambridge University.
  
  
• Resources from TREC-7 SDR98:
  • Website
  • Topics
  • Assessments
  • Papers

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