Supplementary Item Response Theory Models
Overview
Supplementary functions for item response models aiming to complement existing R packages. The functionality includes among others multidimensional compensatory and noncompensatory IRT models (Reckase, 2009, doi:10.1007/978-0-387-89976-3), MCMC for hierarchical IRT models and testlet models (Fox, 2010, doi:10.1007/978-1-4419-0742-4), NOHARM (McDonald, 1982, doi:10.1177/014662168200600402), Rasch copula model (Braeken, 2011, doi:10.1007/s11336-010-9190-4; Schroeders, Robitzsch & Schipolowski, 2014, doi:10.1111/jedm.12054), faceted and hierarchical rater models (DeCarlo, Kim & Johnson, 2011, doi:10.1111/j.1745-3984.2011.00143.x), ordinal IRT model (ISOP; Scheiblechner, 1995, doi:10.1007/BF02301417), DETECT statistic (Stout, Habing, Douglas & Kim, 1996, doi:10.1177/014662169602000403), local structural equation modeling (LSEM; Hildebrandt, Luedtke, Robitzsch, Sommer & Wilhelm, 2016, doi:10.1080/00273171.2016.1142856).
Install
Health
- OK13 OK2026-08-04
- NOTE12 OK, 1 NOTE2026-08-01
- OK13 OK2026-05-02
- ERROR11 OK, 1 ERROR2026-04-25
- NOTE11 OK, 3 NOTE2026-04-22
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- ERROR10 OK, 3 NOTE, 1 ERROR2026-04-18
- NOTE8 OK, 6 NOTE2026-03-30
- ERROR8 OK, 5 NOTE, 1 ERROR2026-03-28
- NOTE11 OK, 3 NOTE2026-03-10
Documentation
- Help pages
- 158includes a package overview page
- Examples that run
- 63%80 run in a plain check · 47 never run · 1 hold no code
- Exported functions with examples
- 93%
- Documented parameters
- 96%
- Return-value docs
- 98%
- Help pages citing references
- 91%
Downloads
Repository
- PRs merged (all time)
- 0%
- Median days to close, 50 most recently updated closed issues
- 5
- Median days to close, 50 most recently updated closed PRs
- 8
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Checks run against github.com/alexanderrobitzsch/sirt on 2026-10-22.
GitHub Pages site last deployed 2025-12-10
Dependencies
Installing sirt adds 9 packages (7 with compiled code, 5.7 MB of source tarballs). Heaviest: Rcpp 1.8 MB, CDM 1.1 MB, RcppArmadillo 1.0 MB.
Show all 18 packagesHide all 18 packages
Code & Tests
Datasets
People & History
Pick two releases to compare their code metrics.
- RR 4.6.0 released · 2026-04-24
- 4.2-133Latest2025-09-28 · current release · diff ↗ ·
added 3 exports
linking_2groups, locpolycor, xxirt_sandwich_pml - RR 4.5.0 released · 2025-04-11
- RR 4.4.0 released · 2024-04-24
- 4.1-152024-02-06 · diff ↗
- 4.0-32
- 3.13-228
- RR 4.3.0 released · 2023-04-21
- unarchivedReturned to CRAN2022-05-17
- 3.12-66
- archivedRemoved from CRAN2022-05-12requires archived package 'CDM'
- RR 4.2.0 released · 2022-04-22
- 3.11-212021-12-09 · diff ↗
- 3.10-1182021-09-23 · diff ↗ ·
added 8 exports
dexppow, linking_haberman_itempars_convert, linking.haberman.lq, lq_fit, lq_fit_estimate_power, predict_scale_group_means, rexppow, sirt_rcpp_discrete_inverse - RR 4.1.0 released · 2021-05-18
- RR 4.0.0 released · 2020-04-24
Show 58 earlier eventsHide 58 earlier events
- 3.9-42020-02-17 · diff ↗
- 3.8-112020-02-15 · diff ↗
- 3.7-40
- 3.6-21
- 3.5-532019-06-20 · diff ↗
- 3.4-64
- RR 3.6.0 released · 2019-04-26
- 3.3-26
- 3.2-392019-02-08 · diff ↗ ·
added 4 exports
invariance_alignment_cfa_config, invariance_alignment_simulate, L0_polish, linking_haberman_itempars_prepare - 3.1-802019-01-04 · diff ↗ ·
removed 1 export
eigenvalues.sirtadded 13 exports
invariance_alignment_constraints, linking.haebara, sirt_abs_smooth, sirt_colMaxs, sirt_colMeans, sirt_colMedians, sirt_colMins, sirt_colSDs, sirt_dnorm_discrete, sirt_eigenvalues, sirt_matrix2, sirt_permutations, sirt_sum_norm - 3.0-322018-11-22 · diff ↗
- RR 3.5.0 released · 2018-04-23
- RR 3.4.0 released · 2017-04-21
- RR 3.3.0 released · 2016-05-03
- RR 3.2.0 released · 2015-04-16
- RR 3.1.0 released · 2014-04-10
- 3.0.32014-01-31 · diff ↗
- 3.0.22013-09-08 · diff ↗
- 2.7-50
- 2.6-92018-03-22 · diff ↗
- 2.5-452018-03-13 · diff ↗
- 2.4-20
- 2.3-572017-11-23 · diff ↗ ·
added 6 exports
sirt_attach_list_elements, sirt_summary_print_objects, sirt_summary_print_package_rsession, sirt_summary_print_package, sirt_summary_print_rsession, sirt_summary_print_call - 2.2-142017-09-20 · diff ↗
- 2.1-24
- 2.0-25
- 1.15-41
- 1.14-0
- 1.13-1
- 1.12-22016-07-19 · diff ↗ ·
added 12 exports
bounds_parameters, CallSwitch, dimproper, ginverse_sym, hard_thresholding, loglike_mvnorm, parmsummary_extend, pmle, pow, prior_model_parse, soft_thresholding, tracemat - 1.11-02016-05-31 · diff ↗ ·
added 16 exports
amh, dinvgamma2, mcmc_coef, mcmc_confint, mcmc_derivedPars, mcmc_plot, mcmc_summary, mcmc_vcov, mcmc_WaldTest, rinvgamma2, xxirt, xxirt_createDiscItem, xxirt_createParTable, xxirt_createThetaDistribution, xxirt_hessian, xxirt_modifyParTable - 1.10-0
- 1.9-02015-11-04 · diff ↗
- 1.8-9
- 1.7-0
- 1.6-02015-05-21 · diff ↗ ·
added 5 exports
categorize, decategorize, lsem.estimate, lsem.permutationTest, lsem.MGM.stepfunctions - 1.5-02015-03-03 · diff ↗
- 1.3
- 1.22014-12-12 · diff ↗
- 1.1
- 1.0-32014-10-27 · diff ↗ ·
removed 1 export
rm.hrmadded 8 exports
rm.sdt, lavaanify.sirt, pcm.conversion, mirt.wrapper.itemplot, mirt.specify.partable, nedelsky.sim, nedelsky.latresp, nedelsky.irf - 0.47-362014-08-30 · diff ↗ ·
added 6 exports
mirt.wrapper.coef, mirt.wrapper.posterior, lavaan2mirt, tam2mirt, R2conquest, mirt.wrapper.fscores - 0.46-152014-08-05 · diff ↗
- 0.45-232014-05-30 · diff ↗ ·
added 8 exports
sia.sirt, rasch.conquest, read.show, read.show.term, read.show.regression, read.pv, read.multidimpv, read.pimap - 0.44-482014-04-27 · diff ↗
- 0.44-47
- 0.43-702014-03-12 · diff ↗ ·
added 6 exports
isop.test, rasch.evm.pcm, unidim.test.csn, linking.robust, lc.2raters, rasch.copula3 - 0.42-252014-01-31 · diff ↗
- 0.41-21
- 0.40-92013-12-09 · diff ↗
- 0.39-30
- 0.38-252013-10-23 · diff ↗ ·
added 4 exports
automatic.recode, genlogis.moments, invariance.alignment, truescore.irt - 0.37-24
- 0.36-302013-09-08 · diff ↗ ·
removed 1 export
rasch.testlet.glmeradded 5 exports
colCumsums.sirt, rowKSmallest2.sirt, md.pattern.sirt, f1d.irt, linking.haberman - 0.34-362013-08-13 · diff ↗ ·
added 12 exports
isop.dich, fit.isop, fit.adisop, isop.scoring, isop.poly, rowMaxs.sirt, rowMins.sirt, rowCumsums.sirt, rowIntervalIndex.sirt, rowKSmallest.sirt, monoreg.rowwise, monoreg.colwise - 0.33-162013-07-09 · diff ↗ ·
removed 1 export
jackknife.rasch.jmladded 11 exports
rasch.jml.jackknife1, mcmc.2pno, mcmc.list.descriptives, mcmclist2coda, mcmc.2pnoh, mcmc.3pno.testlet, mcmc.2pno.ml, R2noharm, summary.R2noharm, R2noharm.jackknife, R2noharm.EAP - 0.31-202013-05-29
- RR 3.0.0 released · 2013-04-03
Package metadata
- First published
- 2013-05-29
- Total releases
- 58 / 13 yrs
- License
- GPL (>= 2) OSI
- Minimum R
- ≥ 3.5
- Bundled data
- 4.7 MB / 63 files
- Download size
- 5.5 MB
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