n-Gram-Based Text Compression

Table 10

Compression ratio of our method, WinRAR, and WinZIP.

Number	OFS	CFS-O	CR-O	CFS-RAR	CR-RAR	CFS-ZIP	CR-ZIP
1	1,166	136	88.34%	617	47.08%	676	42.02%
2	2,240	222	90.09%	887	60.40%	946	57.77%
3	6,628	887	86.62%	2,052	69.04%	2,111	68.15%
4	12,224	1,179	90.36%	3,378	72.37%	3,442	71.84%
5	22,692	2,180	90.39%	6,162	72.85%	6,150	72.90%
6	49,428	4,538	90.82%	12,504	74.70%	12,286	75.14%
7	96,994	10,416	89.26%	21,389	77.95%	21,321	78.02%
8	156,516	15,889	89.85%	34,162	78.17%	34,362	78.05%
9	269,000	28,937	89.24%	56,152	79.13%	57,671	78.56%
10	489,530	54,117	88.95%	101,269	79.31%	108,175	77.90%