View Full Table | Close Full ViewTable 1.

Relative time to compute the inverse of a matrix of size n × n by updating an inverse of size n1 × n1 for n2 individuals added (n = n1 + n2), expressed as proportion (in %) of time required for direct inversion of a matrix of the same size

 
New1 Number of “old” animals (n1), in thousands
n2 5 10 15 20 25
50 13 6 4 3 3
100 15 8 5 4 3
200 20 11 7 6 4
500 32 18 12 9 8
1000 47 28 20 16 13
2000 66 44 33 26 32
Time2 6 45 150 353 680
1Number of new animals.
2Computing time, in seconds, required for direct inversion of old matrix of size n1 (no intermediate steps).