Table 2 . (A) Power to discriminate between alternative demographic models using an “out-of-bag” procedure given the parameter model specification.

From: Population genomic and historical analysis suggests a global invasion by bridgehead processes in Mimulus guttatus

A.

            

Classified models

Simulated models

A2

B3

C2

D8

E1

E2

E3

E4

E5

Total

Classification error

Probability that E4 is selected

A2

8902

1043

24

12

2

9

0

1

7

10000

11.0%

0.0%

B3

2151

7616

26

15

4

73

11

25

79

10000

23.8%

0.3%

C2

210

463

4844

1576

675

642

534

469

587

10000

51.6%

5.5%

D8

447

330

3067

1905

1039

662

908

911

731

10000

81.0%

10.7%

E1

355

336

2094

1342

1462

735

1323

1339

1014

10000

85.4%

15.8%

E2

400

1317

2161

1039

643

1473

756

1062

1149

10000

85.3%

12.5%

E3

28

625

1894

1173

1277

857

1641

1438

1067

10000

83.6%

17.0%

E4

344

1096

1024

993

1219

918

1313

2009

1084

10000

79.9%

23.7%

E5

435

1291

1491

777

963

1170

1006

1228

1639

10000

83.6%

14.5%

Total

13272

14117

16625

8832

7284

6539

7492

8482

7357

   
  1. The comparisons are made at the final selection step between the most likely one- to four-wave introduction models and all possible five-wave introduction models. The table shows how many of the 10,000 simulated datasets generated under a given scenario (A2 to E5, rows) were classified into each demographic scenario (A2 to E5 columns). The number of incorrect classifications is then used to compute the overall classification error. The last column shows the percentage of simulated models classified as E4 (which was the most likely scenario for the observed genetic dataset). Bold numbers indicate correct classification, and underlined numbers indicate >10% incorrect classification. (B) Probability of a given number of origins given that the E4 model is selected.