Software

 
Item Response Modeling / Latent Structure Models

  • CDM  Cognitive Diagnosis Modeling (with T. Kiefer, A. C. George & A. Ünlü)

    • DINA, DINO and mixed DINA/DINO model (din)
    • GDINA model (de la Torre, 2011; gdina): multiple groups, higher order GDINA, polytomous skills (Chen & de la Torre, 2013)
    • Multiple choice DINA model (de la Torre, 2009; mcdina): multiple groups, group-specific item parameters, polytomous skills
    • General diagnostic model (GDM; von Davier, 2008; gdm) for polytomous item responses with ordered discrete or continuous latent variables and an option for estimating trait locations (Bartolucci, 2007)
    • Structured latent class analysis (SLCA; Formann, 1992, slca): Multidimensional IRT model, Latent class model, Located latent class model, Mixture IRT models, Cognitive diagnostic models, ...
                CRAN version 4.2-12 (2015-02-23)     NEWS   INDEX  crantastic   rdocumentation       github       ianhowson                
                Development version 4.1-27 (2015-02-01)
  zip   tar.gz  pdf


                CRAN version 1.5-0 (2015-03-03)     NEWS   INDEX    crantastic   rdocumentation     github       ianhowson                
                
Development version 1.3-16 (2015-01-25)  zip   tar.gz  pdf


  • TAM  Test Analysis Modules (with T. Kiefer & M. Wu)

                   Development version 1.6-3 (2015-04-22)  zip   tar.gz  pdf


  
Missing Data
                CRAN version 1.1-1 (2015-02-23)     NEWS   INDEX  crantastic   rdocumentation     github    ianhowson
               
Development version 1.1-5 (2015-03-23)  zip   tar.gz  pdf

  • mitml  Multiple imputation tools for multilevel data (with S. Grund)
    • Convenient wrapper to the pan package for imputation of multilevel data
    • D1, D2 and D3 statistics for multi-paramerer tests with multiply imputed data
                CRAN version vv.ss (2015-mm-dd)   to appear


Survey Statistics

                CRAN version 1.2-6 (2015-02-22)     NEWS   INDEX  crantastic   rdocumentation     github      ianhowson

                Development version 1.2-9 (2015-04-03)  zip   tar.gz  pdf




Some contributionsIsingFit, mice, mirt, semTools,