Pairwise Maximum Likelihood Estimation PMLE with Facets |
This is for 32-bit Facets 3.87. Here is Help for 64-bit Facets 4
Dichotomous pairwise maximum likelihood estimation PMLE can be implemented directly in Facets using the paired comparison technique. The estimate match those using the pairwise maximum likelihood estimation method in Bruce Choppin (1983, 1985)."A Fully Conditional Estimation Procedure for Rasch Model Parameters."
Procedure:
1. from a dataset, such as the Knox Cube Test, use a utility program to loop through all the items, output two data line for each pair of observations where there is a '1" for one item and a "0" for another item. The data looks like this
first item, second item, 1
second item, first item, 0
2. Then construct a Facets specification and data file looking like this:
title = "facets pmle kct.txt"
facets=2
models=?,-?,D
entered=1,1
centered=1
negative=1
labels=
1, items
1-14
*
2,dummy
*
data=
1 6 1
6 1 0
1 7 1
7 1 0
.......
Help for Facets Rasch Measurement and Rasch Analysis Software: www.winsteps.com Author: John Michael Linacre.
Facets Rasch measurement software.
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Jan. 17 - Feb. 21, 2025, Fri.-Fri. | On-line workshop: Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com |
May 16 - June 20, 2025, Fri.-Fri. | On-line workshop: Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com |
June 20 - July 18, 2025, Fri.-Fri. | On-line workshop: Rasch Measurement - Further Topics (E. Smith, Facets), www.statistics.com |
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