Apriori-based generation creates candidates containing given constraint items.
An optimization function which is composed of the interpolation error and the constraint items of the vertical scaling factors in the fractal interpolation iterated function system is designed.
Overall, "time constraints" (items combined median 3 [IQR 2 5]), represented the greatest barrier to trial recruitment followed by "Difficulties including eligible patients" (items combined median 5 [IQR 3 6]).
To test whether partial uniqueness invariance could be obtained, the procedure for searching for items that were not invariant was repeated several times, and the equality constraint of item intercepts of three items (depressed, fearful, and dislike) were eventually lifted.
[21] proposes of relaxing the equal-support constraint introducing item k-anonymity as a compromise.
As in the strip packing problem, we have to pack all items, minimizing the height used, but now we have the additional constraint that items of higher classes cannot block the way out of items of lower classes.
As in the strip packing problem with rotations, we have to pack all items minimizing the used height, but now we have the additional constraint that items of higher classes cannot block the way out of lower classes items.
A similar pattern of results was found when comparing across phases of pregnancy: configural and weak invariance assumptions held, but equality constraints on item intercepts led to significant worsening of model.
However, additional equality constraints on item intercepts led to non-ignorable changes in CFI values: ΔCFI = .014 for feeling fat-general, ΔCFI = .018 for feeling fat – clothing specific, ΔCFI = .067 for attractiveness, ΔCFI = .019 for salience, and ΔCFI = .019 for strength and fitness.
