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Table 6 Run time (d:hr:min) and number of iterates required for analyses of SCC.

From: Principal component approach in variance component estimation for international sire evaluation

 

Country addition step

Rank reduction step

Total time

 

Countries

Iterates

Time

Rank

Iterates

Time

 

Bottom-up PC

7

25

0:02:45

5

3+2+4a

0:00:28

0:03:13

 

8

14

0:00:56

6

3

0:00:09

0:01:05

 

9

13

0:01:29

7

5

0:00:22

0:01:51

 

10

6

0:01:19

8

5

0:00:37

0:01:56

 

11

6

0:01:58

9

5

0:00:56

0:02:54

 

12

3

0:01:50

9

21

0:05:05

0:06:55

 

13

11

0:03:59

10

5

0:01:21

0:05:20

 

14

26

0:12:18

11

8

0:02:49

0:15:07

 

15

22

0:13:43

11

6

0:03:11

0:16:54

 

16

8

0:05:26

11

4

0:02:21

0:07:47

 

17

9

0:06:01

11

4

0:02:17

0:08:18

 

18

10

0:06:31

12

8

0:03:58

0:10:29

 

19

12

0:10:09

12

6

0:04:04

0:14:13

 

20

11

0:11:20

13

5

0:03:51

0:15:11

 

21

13

0:14:34

14

7

0:06:25

0:20:59

 

22

15

1:01:54

14

6

0:07:39

1:09:33

 

23

9

0:13:13

15

7

0:07:59

0:21:12

       

7:18:57

Direct PC

23

  

15

86

7:00:02

 
  1. a Three rank reduction steps were needed before the appropriate rank was found.