parid0435 | 31 Jan 2003 10:47:35
It occurs to me that it may not be possible to achieve the "single-SIDP criterion" directly in a case where different, non-cooperating models are included in a new model that encompasses them. However, in this case, the new encompassing model can have SIDPs whose exhibited values are "derived" from the values exhibited by the SIDPs defined in the included models, in such a way that the derived SIDPs meet the "single-SIDP criterion". This suggests that we need an additional step in the merging process defined by the RM, in which these derived property values are calculated. It also suggests that the values from which they were derived should be ignored by the merging process thereafter. Which, in turn, suggests that the merging process must proceed hierarchically, from the most deeply-included leaf models to the root model that includes them all. What do you think of *that*? If we do all that, we can make the "single-SIDP criterion" a requirement for all model designs.