This file contains documentation for Chinese Treebank 6.0, Linguistic Data Consortium (LDC) catalog number LDC2007T36 and isbn 1-58563-450-6.
The Chinese Treebank project began at the University of Pennsylvania in 1998 and continues at Penn and the University of Colorado. Chinese Treebank 6.0 is the latest version produced from this effort, consisting of 780,000 words (over 1.28 million Chinese characters) that are segmented, part-of-speech tagged and fully bracketed. The data sources include newswire from Xinhua News Agency, articles from Sinorama Magazine, news from the website of the Hong Kong Special Administrative Region and transcripts from various broadcast news programs.
The LDC published Chinese Treebank 1.0 in 2000; it was later corrected and released in 2001 as Chinese Treebank 2.0 (LDC2001T11) and consisted of approximately 100,000 words. The LDC released Chinese Treebank 4.0 (LDC2004T05), an updated version containing roughly 400,000 words, in 2004. A year later, the LDC published the 500,000 word Chinese Treebank 5.0 (LDC2005T01).
For information about Chinese Treebank methodology and guidelines, consult the attached documentation files and the Penn-CU Chinese Treebank Project website.
This release encompasses 2,036 text files, containing 28,295 sentences, 781,351 words and 1,285,149 hanzi (Chinese characters). The data is provided in two encodings: GBK and UTF-8, and the annotation has Penn Treebank-style labeled brackets. Details of the annotation standard can be found in the enclosed segmentation, POS-tagging and bracketing guidelines. The data is provided in four different formats: raw text, word segmented, word segmented and POS-tagged, and syntactically bracketed.
For an example of the data in this publication, please examine this sample of the bracketed data.
Portions © 2000-2001 China Broadcasting System, © 2000-2001 China Central TV, © 2000-2001 China National Radio, © 2000-2001 China Television System, © 1997 The Government of the Hong Kong Special Administrative Region, © 1996-2001 Sinorama Magazine, © 1994-1998 Xinhua News Agency, © 2001, 2004, 2005, 2007 Trustees of the University of Pennsylvania