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Table 4 Simulated single-end reads: search time and percent of correct alignments

From: A random-permutations-based approach to fast read alignment

Read length

75

100

150

Mismatch probability

1%

2%

5%

1%

2%

5%

1%

2%

5%

Software

Time/%Correct

         

Bowtie

-v 3

time (s)

% correct

141

94.9

245

89.0

517

45.0

177

94.4

350

81.9

588

24.1

306

89.5

537

60.9

647

5.0

Bowtie

-v 2

time (s)

% correct

58

91.1

90

76.2

165

25.1

79

87.6

125

63.7

190

11.0

126

76.2

194

38.9

218

1.6

Bowtie

-n 3

time (s)

% correct

152

92.6

236

84.6

439

67.7

234

92.5

393

78.8

961

65.2

397

88.2

733

59.4

2430

41.9

Bowtie

-n 2

time (s)

% correct

108

93.1

161

85.7

286

69.6

170

93.0

264

79.7

609

67.0

294

88.6

514

59.9

1560

43.1

Bowtie

-n 2 -k 10

time (s)

% correct

873

96.2

869

88.7

1179

72.9

1242

95.3

1069

81.7

2377

69.2

1511

90.3

1243

61.0

3446

44.0

Bowtie2

-very-fast

time (s)

% correct

169

93.6

163

87.3

136

59.5

234

95.3

233

91.2

196

69.4

363

95.9

366

93.0

299

76.1

Bowtie2

-fast

time (s)

% correct

224

94.0

223

88.2

178

60.8

329

95.9

320

92.4

267

71.0

533

96.9

523

94.7

422

78.2

Bowtie2

-sensitive

time (s)

% correct

354

95.2

315

92.1

275

73.1

498

96.5

462

94.6

396

80.4

791

97.6

765

96.6

638

88.4

Bowtie2

-very sensitive

time (s)

% correct

776

95.7

734

94.2

611

83.6

1124

96.8

1056

95.8

851

89.1

1864

97.8

1730

97.3

1383

94.2

Bowtie2

-very sensitive -k 10

time (s)

% correct

1063

98.0

813

95.8

691

84.6

1743

98.4

1341

96.6

1165

89.9

3498

98.9

2775

97.6

2395

94.9

BWA

-o 0

time (s)

% correct

320

96.5

457

93.3

516

59.9

404

97.2

743

93.9

610

54.2

715

97.4

931

92.5

447

33.1

BWA

-o 1

time (s)

% correct

359

97.1

560

93.8

889

60.2

483

98.1

1007

94.7

1206

54.6

904

98.7

1513

93.6

1034

33.4

Permutations-based

(mode 1)

time (s)

% correct

53

97.5

76

95.8

106

84.5

56

98.4

90

97.5

118

89.0

76

98.5

98

98.0

112

91.3

Permutations-based

(mode 2)

time (s)

% correct

147

97.8

149

96.4

152

86.6

155

98.5

147

97.8

145

90.6

145

98.6

148

98.1

156

92.7

Permutations-based

(fast)

time (s)

% correct

31

93.7

43

88.5

62

64.1

33

95.8

46

91.5

64

66.9

45

96.9

51

93.3

72

69.4

  1. Each dataset contained 106 reads. Mutation rate: 0.1%, indel ratio: 15%.
  2. We report the search time (for BWA: overall run time) and the percent of the reads which were aligned to the correct position in the genome.
  3. In some cases and in some settings, the programs may report several possible alignments for some reads. When needed, additional filtering can be added to aligners in order to eliminate some of the results, as appropriate for specific applications. In the experiment, the programs reported < 4 alignments/read (in average, in sensitive modes), with 0-1 alignments for the majority of reads. In this table, when the program produces multiple possible alignments, it is enough that one of the reported alignments corresponds to the correct location in order to consider the alignment correct.