Test Generation from Combinatorial Designs
4.7.1 SHORTCOMINGS OF USING MOLS FOR TEST DESIGN
While the approach of using MOLS to develop test configurations has
been used in practice, it has its shortcomings as enumerated below:
1. A sufficient number of MOLS might not exist for the problem at
hand.
As an illustration, in Example 4.17, we needed only two MOLS of
order 4 that do exist. However, if the number of factors increases,
to say 6, without any change in the value of k = 4, then we would
be short by one MOLS as there exist only three MOLS of order 4.
As mentioned earlier in Step 5 in Procedure PDMOLS, the lack of
sufficient MOLS is compensated by randomizing the generation
of columns for the remaining factors.
2. While the MOLS approach assists with ...