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It is defined as follows: let I = {i 1,i 2 …i n } denote the set of n binary items, and let D = {t 1,t 2 …t m } denote the set of transactions.
We constructed binary items' representations for each of these metadata, where 1 means that the item has the metadatum while 0 means it does not, and used them as baseline representations, applying them to calculate the item similarity by the same means that our approaches are used.
The survey consisted of 12 Likert scale items and 16 binary items about relevant student interests, motivation to pursue additional opportunities to learn, team collaboration and team goals, and 5 general demographic questions about students and their team (see Additional file 1 for relevant sample items).
For binary items, ordinary kappa coefficients were used.
Percentage agreement will also over-represent reliability for binary items with highly skewed distributions.
Latent class analysis categorizes binary items into like classes based on the underlying assumption of a common latent variable [ 20].
Similar(30)
Binary item disengagement indicators were created by means of item response time thresholds.
For this purpose, binary item disengagement indicators were defined for the Canadian sample by means of response time thresholds and subjected to an item response analysis.
This resulted in, for example, 31 residuals for a binary item and 62 residuals for a polytomous item with three score categories.
For example, the binary item response format of the APZ was too crude to measure subtle alterations of consciousness.
Using the age range a binary item was created.
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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