Differential Item Functioning (DIF)#4
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vandenman merged 10 commits intojasp-stats:masterfrom Feb 4, 2025
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two small comments below, still need to check this in jasp.
| defaultValue: 1 | ||
| min: 1 | ||
| max: 99999999 | ||
| defaultValue: Math.floor(Math.random() * 1000000) // Init with random integer in [1,...,999999] |
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can't this use the setSeed reuseable element?
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It can, but that does not allow initialisation with a known but random seed.
R/itemresponsetheorycommon.R
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| fit <- mirt::multipleGroup(data = state[["items"]], model = 1, itemtype = options[["model"]], group = dataset[[options[["groupingVariable"]]]], SE = FALSE, verbose = FALSE, TOL = options[["emTolerance"]], technical = list(NCYCLES = options[["emIterations"]], set.seed = options[["seed"]])) | ||
| dif <- mirt::DIF(fit, which.par = parameters) |
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haven't tested this, but can it fail/ does it need a try-catch?
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