Canterbury corpus
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The Canterbury corpus is a collection of files intended for use as a benchmark for testing lossless data compression algorithms. It was created in 1997 at the University of Canterbury, New Zealand and designed to replace the Calgary corpus. The files were selected based on their ability to provide representative performance results.[1]
Contents
Contents[edit]
In its most commonly used form, the corpus consists of 11 files, selected as "average" documents from 11 classes of documents,[2] totaling 2,810,784 bytes as follows.
| Size (bytes) | File name | Description |
|---|---|---|
| 152,089 | alice29.txt | English text |
| 125,179 | asyoulik.txt | Shakespeare |
| 24,603 | cp.html | HTML source |
| 11,150 | fields.c | C source |
| 3,721 | grammar.lsp | LISP source |
| 1,029,744 | kennedy.xls | Excel spreadsheet |
| 426,754 | lcet10.txt | Technical writing |
| 481,861 | plrabn12.txt | Poetry |
| 513,216 | ptt5 | CCITT test set |
| 38,240 | sum | SPARC executable |
| 4,227 | xargs.1 | GNU manual page |
See also[edit]
References[edit]
- ^ Ian H. Witten; Alistair Moffat; Timothy C. Bell (1999). Managing Gigabytes: Compressing and Indexing Documents and Images. Morgan Kaufmann. p. 92. ISBN 9781558605701.
- ^ Salomon, David (2007). Data Compression: The Complete Reference (Fourth ed.). Springer. p. 12. ISBN 9781846286032.
External links[edit]
Data compression methods | |||||||
|---|---|---|---|---|---|---|---|
| Lossless |
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| Audio |
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| Image |
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| Video |
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| Theory | |||||||
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