歡迎下載(DownLoad)我們研製的中、英文文本(text)資料壓縮軟體
Text data compression (lossless) software for Linux and Windows

教育部校園軟體創作佳作獎

lzga(linux),

lzga(Wins)
(2001) Work-Buffer-Size Adjustable(from 6KB to 120KB) Data-Block Compressor (general, not aimed at Chinese text), revised from lzg. example main
program in C
壓縮率
比 zip 差約 3 至 5% .
歡迎測試
下列程式
(test programs):

lzg

lzg2

lzg3 (Linux)

lzg3 (Windows)

lzgd (Linux)

lzgd (Windows)
(1995) lzg:
A new Chinese text compression scheme combining dictionary coding and adaptive alphabet-character grouping.
整合 詞典式編碼 與 字符集符號調適分群 之 中文文本資料壓縮 的新方法


(2001) lzg2:
improved to compress non-Chinese text better, e.g., English text and object program.
(2002) lzg3:
coding rate further improved about 2% for both English and Chinese text.
中、英文資料俱佳之壓縮方法.
教育部校園軟體創作佳作獎

(2003) lzgd:
coding rate further improved about 2.5% for both Chinese and English text.
摘要
(abstract)

(1995)
中文text 壓縮率
比 gzip 好約
7.5%, 10%(2003).

英文text 壓縮率
比 gzip 差1.5%(小檔案時),
比 gzip 好3.0%(大檔案時)
(2003).
歡迎測試
下列程式
(test programs):

lamenc (linux)

lamencw (linux)

lamencw (MS Win)

lamenca (linux)

(1994)
使用 調適馬可夫模型 與 算術編碼 之 大字符集中文文本資料壓縮.
Large-alphabet Chinese text compression using adaptive Markov model and arithmetic coder.


(2003): lamencw improved in:
(a) English text compression. (not only Chinese text but also English text now)
(b) Adding order two Markov model. (significant for English)
(c) processing-speed promotion: replacing dynamic-lists with trees. (supporting arithmetic coding is needed)

lamencw.exe and lamdecw.exe should be run from a DOS Window.

(2004): lamenca further improved.
A large-alphabet oriented scheme for Chinese and English text compression

摘要
(abstract)

(1994)

摘要
(abstract)

(2004)
中文text 壓縮率
比 gzip 好約 12% (2003)

英文text 壓縮率
比 gzip 好約 10% (2003)

中文text 壓縮率
比 bzip2 好約 3% (2003)
lamdec(linux)

lamdecw(linux)

lamdecw(MS Win)

lamdeca(linux)

The corresponding decoder programs for lamenc, lamencw, lamenca. . .