Table 3.

The compositions and experiment results of simulated datasets

Features	Low-complexity		Medium-complexity		High-complexity
Taxonomic level	≤ Genus		≤ Family		≤ Class
No. of species	2		5		10
No. of cases	10		10		5
Expression level	Uniform	Log normal	Uniform	Log normal	Uniform	Log normal
Meta-IDBA
Component accuracy (%)	98.82	98.80	98.32	98.16	99.35	99.1
N50	18 729	20 689	11 111	14 610	8246	9553
Coverage (%)	91.76	89.20	87.39	81.62	91.47	84.16
No. of contigs	2674	2180	13 627	7716	55 249	38 500
No. of bases	5 418 695	5 223 474	20 615 422	17 644 012	68 465 188	58 088 054
No. of error contigs	9	9	26	21	90	223
No. of error bases	57 645	44 427	115 050	82 159	336 429	371 334
Time (min)	12.5	12.1	54.1	55.2	120.1	115.7
Velvet
N50	11 437	9771	3356	3433	1983	1997
Coverage (%)	87.29	83.70	86.83	84.88	92.39	75.77
No. of contigs	2309	2230	12 839	11 208	106 917	37 567
No. of bases	4 876 110	4 674 621	15 824 798	16 017 085	70 072 915	44 948 173
No. of error contigs	9	7	16	14	196	59
No. of error bases	54 364	34 796	62 470	70 148	401 434	230 525
Time (min)	16.8	15.2	44.7	45.0	96.4	95.8
Abyss
N50	2395	3608	1188	1570	1484	2511
Coverage (%)	95.06	93.40	93.80	88.97	94.56	86.53
No. of contigs	10 724	8448	48 409	35 796	123 583	85 837
No. of bases	8 199 665	8 151 930	31 072 592	26 252 905	94 857 363	81 759 539
No. of error contigs	15	20	45	42	426	389
No. of error bases	24 035	22 733	43 112	39 118	173 856	163 246
Time (min)	38.3	37.5	147.7	145.7	319.0	323.1
SOAPdenovo
N50	7457	8233	2502	2171	1806	1351
Coverage (%)	93.57	93.91	94.97	93.77	97.27	87.37
No. of contigs	7742	7566	42 158	41 446	124 756	116 723
No. of bases	6 253 699	6 210 923	25 421 067	24 160 482	80 261 153	63 438 459
No. of error contigs	6	7	20	26	94	159
No. of error bases	16 337	28 987	57 283	60 601	185 439	160 779
Time (min)	11.3	10.2	39.8	37.6	84.7	85.1