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IRT can be used to select the most useful items for a shortened scale, and to develop a scoring algorithm that predicts the total score on the full scale [ 15, 16].
The knapsack problem [14] derives its name from the problem that is faced by someone who has a fixed-size knapsack and must fill it with the most useful items.
We culled through the travel section to find some of the most useful items with the steepest discounts.
The most useful items and their combinations are shown in table 4.
An ad-hoc questionnaire was developed and subsequently tested in some pilot surveys to define the most useful items and a final version.
In principle this should lead to a reduction in workload: instead of having a large unordered set of candidates to work through, under ranking the most useful items should tend to appear early in the list.
Similar(52)
Perhaps the most useful item I ever heard on Woman's Hour was in the mid-1970s though, when I was about to buy my first house.
GPs expressed the view that quick reference information would be the most useful item for many GPs.
Prioritize your most used items.
Merino base layers are perhaps the most useful clothing item ever, and have the added benefit (please don't judge your reviewer here) of lasting a good few wears between washes.
The most useful data item was the "adjusted" colonoscopy caecal intubation rate (mean utility score 2.81).
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com