Last data update: 2014.03.03
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R: Simulated Multifaceted Data
data.sim.mfr | R Documentation |
Simulated Multifaceted Data
Description
Simulated data from multiple facets.
Usage
data(data.sim.mfr)
data(data.sim.facets)
Format
The format of data.sim.mfr is:
num [1:100, 1:5] 3 2 1 1 0 1 0 1 0 0 ...
- attr(*, "dimnames")=List of 2
..$ : chr [1:100] "V1" "V1.1" "V1.2" "V1.3" ...
..$ : NULL
The format of data.sim.facets is:
'data.frame': 100 obs. of 3 variables:
$ rater : num 1 2 3 4 5 1 2 3 4 5 ...
$ topic : num 3 1 3 1 3 2 3 2 2 1 ...
$ female: num 2 2 1 2 1 1 2 1 2 1 ...
Source
Simulated
Examples
#######
# sim multi faceted Rasch model
data(data.sim.mfr)
data(data.sim.facets)
# 1: A-matrix test_rater
test_1_items <- .A.matrix( data.sim.mfr, formulaA = ~rater,
facets = data.sim.facets, constraint = "items" )
test_1_cases <- .A.matrix( data.sim.mfr, formulaA = ~rater,
facets = data.sim.facets, constraint = "cases" )
# 2: test_item+rater
test_2_cases <- .A.matrix( data.sim.mfr, formulaA = ~item+rater,
facets = data.sim.facets, constraint = "cases" )
# 3: test_item+rater+topic+ratertopic
test_3_items <- .A.matrix( data.sim.mfr, formulaA = ~item+rater*topic,
facets = data.sim.facets, constraint = "items" )
# conquest uses a different way of ordering the rows
# these are the first few rows of the conquest design matrix
# test_3_items$A[grep("item1([[:print:]])*topic1", rownames(test_3_items)),]
# 4: test_item+step
test_4_cases <- .A.matrix( data.sim.mfr, formulaA = ~item+step,
facets = data.sim.facets, constraint = "cases" )
# 5: test_item+item:step
test_5_cases <- .A.matrix( data.sim.mfr, formulaA = ~item+item:step,
facets = data.sim.facets, constraint = "cases" )
test_5_cases$A[, grep("item1", colnames(test_5_cases)) ]
# 5+x: more
# => 6: is this even well defined in the conquest-design output
# (see test_item+topicstep_cases.cqc / .des)
# regardless of the meaning of such a formula;
# currently .A.matrix throws a warning
# test_6_cases <- .A.matrix( data.sim.mfr, formulaA = ~item+topic:step,
# facets = data.sim.facets, constraint = "cases" )
test_7_cases <- .A.matrix( data.sim.mfr, formulaA = ~item+topic+topic:step,
facets = data.sim.facets, constraint = "cases" )
## Not run:
# => 8: same as with 6
test_8_cases <- .A.matrix( data.sim.mfr, formulaA = ~item+rater+item:rater:step,
facets = data.sim.facets, constraint = "cases" )
## [1] "Can't proceed the estimation: Lower-order term is missing."
test_9_cases <- .A.matrix( data.sim.mfr, formulaA = ~item+step+rater+item:step+item:rater,
facets = data.sim.facets, constraint = "cases" )
test_10_cases <- .A.matrix( data.sim.mfr, formulaA = ~item+female+item:female,
facets = data.sim.facets, constraint = "cases" )
### All Design matrices
test_1_cases <- designMatrices.mfr( data.sim.mfr, formulaA = ~rater,
facets = data.sim.facets, constraint = "cases" )
test_4_cases <- designMatrices.mfr( data.sim.mfr, formulaA = ~item+item:step,
facets = data.sim.facets, constraint = "cases" )
### TAM
test_4_cases <- tam.mml.mfr( data.sim.mfr, formulaA = ~item+item:step )
test_tam <- tam.mml( data.sim.mfr )
test_1_cases <- tam.mml.mfr( data.sim.mfr, formulaA = ~rater,
facets = data.sim.facets, constraint = "cases" )
test_2_cases <- tam.mml.mfr( data.sim.mfr, formulaA = ~item+rater,
facets = data.sim.facets, constraint = "cases" )
## End(Not run)
Results
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