North American News Text, General Release
|Item Name:||North American News Text, General Release|
|LDC Catalog No.:||LDC2008T16|
|Release Date:||August 19, 2008|
|Application(s):||natural language processing, machine learning, linguistic analysis, language modeling, information retrieval, information extraction, information detection, parsing|
North American News Text, General Release
|Online Documentation:||LDC2008T16 Documents|
|Licensing Instructions:||Subscription & Standard Members, and Non-Members|
|Citation:||Graff, David. North American News Text, General Release LDC2008T16. Web Download. Philadelphia: Linguistic Data Consortium, 2008.|
North American News Text, General Release, Linguistic Data Consortium (LDC) catalog number LDC2008T16 and isbn 1-58563-484-0, is a collection of English news text from the Los Angeles Times, Washington Post, New York Times and Reuters. This data is a subset of the data contained in the North American News Text Corpus (LDC95T21) released in 1995 and is reissued to complement the release of the Brown Laboratory for Linguistic Information Processing (BLLIP) North American News Text sets (LDC2008T13, LDC2008T14), which consist of Penn Treebank-style parsing of the North American News Text Corpus text.
North American News Text is reissued in two versions: North American News Text, Complete, LDC2008T15, the members-only original version, now available as a 2008 Membership Year corpus; and North American News Text, General Release LDC2008T16 (which does not include text from the Wall Street Journal), available to nonmembers for the first time. The directory structure of each of these publications has been restructured to be identical to the directory structure of the BLLIP releases.
The table below contains a breakdown of the sources, epochs and word counts for the data in the North American News Text releases:
|Source||Dates||# Words (millions)|
|Los Angeles Times & Washington Post||May 1994 - August 1997||52|
|New York Times News & Syndicate||July 1994 - December 1996||173|
|Reuters News Service (General and Finanical)||April 1994 - December 1996||85|
|Wall Street Journal (not in General Release)||July 1994 - December 1996||40|
The New York Times and the Los Angeles Times/Washington Post services include a range of other newspaper sources in their syndicated newswires. The Los Angeles Times/Washington Post material in this corpus includes some news text from the following sources:
- The Baltimore Sun
- The Hartford Courant
The New York Times material in this corpus contains some data from the following sources, although New York Times articles predominate:
- Bloomberg Business News
- The Boston Globe
- Los Angeles Daily News
- Fort Worth Star-Telegram
- Cox News Service
- The Arizona Republic
- Seattle Post-Intelligencer
- San Francisco Examiner
- Houston Chronicle
- San Francisco Chronicle
- Economist Newspaper Ltd.
- Hearst Newspapers
The text content of each data file (following uncompression with the GNU-unzip utility) consists of plain ASCII character data with SGML tags to indicate article boundaries and organization of information within each article.
There are differences among the five primary newswire sources in terms of the number and types of SGML tags used in the text, but the following tag structure is common to all data sets:
-- start of a new article ... -- some variety of "header" tags appears here -- start of the text content of the article
-- all paragraph boundaries are marked by this tag ... -- text data as it is provided by the newswire service-- end of text content of the article ... -- some variety of "trailer" tags appears here -- end of article
In general, the differences in format among the various newswire sources will be found in the SGML tags that appear between and , and those that appear between and . The actual text content of articles (the region between and ) is consistent in format across sources, except for some uses of the SGML "&..;" notation to represent special characters in the data. For example, "&MD;" is used in the "latwp" material to represent the "em-dash" character, which is typically used to separate the "dateline" from the opening sentence in the first paragraph of each article. There may also be differences in how quotation marks are rendered.
As this re-release is intended to complement the BLLIP North American News Text releases, the directory structure of this corpus is identical to that of the BLLIP publications.