Description Usage Arguments Examples
Estimates the abilities based on known item difficulties. More info here: https://www.rasch.org/rmt/rmt122q.htm
1 | amle_fun(response, response_max, scale_id, scale_cuts, it_diffic)
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response |
is a vector of scored responses. |
response_max |
is a vector of the maximum of the scored responses. |
scale_id |
is a vector indicating the scale for each item. The scale ID must be the row ID in 'scale_cuts'. |
scale_cuts |
is a list of the cuts/thresholds for each scale type. Should be ordered to ID with 'scale_id'. |
it_diffic |
is a vector of item difficulties. |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | set.seed(1010)
#Simulate some response string
resp = c(1,1,2,2,3,3,4,4)
#Simulate maximum responses
max_responses = c(2,2,3,3,3,3,4,4)
#Identify the scale type for each item
scale_ID = c(1,1,2,2,2,2,3,3)
#List of a made-up scale thresholds
final_scale = list("ScaleA" = c(-0.2,0.2),
"ScaleB" = c(-0.3, -0.2, 0.5),
"ScaleC" = c(-0.4, -0.1, 0.3, 0.2))
#Simulate item difficulty parameters
item_difficulties = c(runif(8, min = -3, max = 3) )
amle_fun(resp, max_responses, scale_ID, final_scale, item_difficulties)
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