<i>Homo sapiens</i> genome: compression with COMPACT-REF and GReEn of the YH, KOREF_20090224 and KOREF_20090131 versions using hg18 as a reference.

<p>Note: ‘T’ refers to ‘’Total’’. The unit of ‘Time’ is second. ‘Time(c)’ refers to the compression time and ‘Time(d)’ refers to the decompression time. ‘GR’ and ‘CP’ indicate the compared method ‘GReEn’ and the proposed ‘COMPACT-REF’ respectively. The compression/decompression time of KOREF31 which are omitted here approximately equal to that of KOREF24. For ease of comparison, we transformed all characters to lowercase and mapped all unknown nucleotides to ‘n’ before compression. After this transformation, all sequences were composed only of characters from the alphabet {a,c,g,t,n}.