MJMLE= or MUCON= maximum number of JMLE iterations = 0, no limit
JMLE iterations may take a long time for big data sets, so initially set this to -1 for no JMLE iterations. Then set MJMLE= to 10 or 15 until you know that more precise measures will be useful. The number of PROX iterations, MPROX=, affects the number of JMLE iterations but does not affect the final estimates.
MJMLE= (or MUCON=) specifies the maximum number of JMLE iterations to be performed. Iteration will always cease when both LCONV= and RCONV= criteria have been met, see CONVERGE=. To specify no maximum number limitation, set MJMLE=0. Iteration always be stopped by Ctrl with F, see "Stopping Winsteps".
Example 1: To allow up to 4 iterations in order to obtain rough estimates of a complex rating (or partial credit) scale:
MJMLE=4 ; 4 JMLE iterations maximum
Example 2: To allow up to as many iterations as needed to meet the other convergence criteria:
MJMLE=0 ; Unlimited JMLE iterations
Example 3: Perform no JMLE iterations, since the PROX estimates are good enough.
MJMLE=-1 ; No JMLE iteration
Example 4: Run as quick estimation as possible to check out control options.
MPROX=-1 ; minimal PROX estimation iterations
MJMLE=-1 ; no JMLE iterations
Example 5: To perform an exact number of JMLE iterations.
a) set the convergence criteria very tight, so that they are never satisfied:
b) set the maximum number of JMLE iterations equal to the desired number:
MJMLE = 99 (or whatever)
Help for Winsteps Rasch Measurement Software: www.winsteps.com. Author: John Michael Linacre
|Facets Rasch measurement software.
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Winsteps Rasch measurement software. Buy for $149. & site licenses. Freeware student/evaluation download
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|Forum||Rasch Measurement Forum to discuss any Rasch-related topic|
|Rasch Measurement Transactions (free, online)||Rasch Measurement research papers (free, online)||Probabilistic Models for Some Intelligence and Attainment Tests, Georg Rasch||Applying the Rasch Model 3rd. Ed., Bond & Fox||Best Test Design, Wright & Stone|
|Rating Scale Analysis, Wright & Masters||Introduction to Rasch Measurement, E. Smith & R. Smith||Introduction to Many-Facet Rasch Measurement, Thomas Eckes||Invariant Measurement: Using Rasch Models in the Social, Behavioral, and Health Sciences, George Engelhard, Jr.||Statistical Analyses for Language Testers, Rita Green|
|Rasch Models: Foundations, Recent Developments, and Applications, Fischer & Molenaar||Journal of Applied Measurement||Rasch models for measurement, David Andrich||Constructing Measures, Mark Wilson||Rasch Analysis in the Human Sciences, Boone, Stave, Yale|
|in Spanish:||Análisis de Rasch para todos, Agustín Tristán||Mediciones, Posicionamientos y Diagnósticos Competitivos, Juan Ramón Oreja Rodríguez|
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|Coming Rasch-related Events|
|Sept. 4 - Oct. 16, 2015, Fri.-Fri.||On-line workshop: Rasch Applications, Part 1: How to Construct a Rasch Scale (W. Fisher), www.statistics.com|
|Sept. 9-11, 2015, Wed.-Fri.||In-person workshop: Introductory Rasch (A. Tennant, RUMM), Leeds, UK, www.leeds.ac.uk/medicine/rehabmed/psychometric|
|Sept. 14-16, 2015, Mon.-Wed.||IACAT Conference: International Association of Computerized Adaptive Testing, Cambridge, UK, iacat.org|
|Sept. 14-16, 2015, Mon.-Wed.||In-person workshop: Intermediate Rasch (A. Tennant, RUMM), Leeds, UK, www.leeds.ac.uk/medicine/rehabmed/psychometric|
|Sept. 17-18, 2015, Thur.-Fri.||In-person workshop: Advanced Rasch (A. Tennant, RUMM), Leeds, UK, www.leeds.ac.uk/medicine/rehabmed/psychometric|
|Sept. 30 - Oct. 2, 2015, Wed.-Fri.||In-person workshop: IRT and Rasch analyses using R and Concerto (C. Gibbons), Cambridge, UK, www.psychometrics.cam.ac.uk|
|Oct. 16 - Nov. 13, 2015, Fri.-Fri.||On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com|
|Oct. 23 - Nov. 20, 2015, Fri.-Fri.||On-line workshop: Rasch Applications, Part 2: Clinical Assessment, Survey Research, and Educational Measurement (W. Fisher), www.statistics.com|
|Nov. 13, 2015, Fri.||In-person workshop: Rasch Models in Business Administration, in Homage to Professor Pedro Álvarez-Martínez, Tenerife, Canary Islands, www.institutos.ull.es|
|Dec. 2-4, 2015, Wed.-Fri.||In-person workshop: Introductory Rasch (A. Tennant, RUMM), Leeds, UK, www.leeds.ac.uk/medicine/rehabmed/psychometric|
|March 18, 2016, Fri.||UK Rasch User Group Meeting, Durham, UK, www.rasch.org.uk|
|March 23-24, 2016, Wed.-Thur.||In-person workshop: Introduction to Rasch using Winsteps (W.Boone), Cincinnati OH, raschmeasurementanalysis.com|
|April 8-12, 2016, Fri.-Tues.||AERA Annual Meeting, Washington DC, www.aera.net|
|Aug. 12 - Sept. 9, 2016, Fri.-Fri.||On-line workshop: Many-Facet Rasch Measurement (E. Smith, Facets), www.statistics.com|
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