MetaboAnalystR
The R engine behind MetaboAnalyst closes the gap from raw spectra to biological interpretation
Comparison · Analytics
cIRT vs epidict
A side-by-side editorial comparison of cIRT and epidict — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:r-package
cIRT vs epidict: at a glance
What is cIRT?
A choice-based IRT model published once in 2019 and kept compiling ever since
cIRT implements Choice Item Response Theory, jointly modelling which item a respondent picks and how they perform on it — the setting where subjects choose between a harder and an easier question and the choice itself carries information. It comes out of the TMSA Lab, is built on Rcpp and RcppArmadillo, and has had one substantive release since reaching CRAN. Everything after early 2019 is build-system and toolchain upkeep.
What is epidict?
A spin-out dictionary reader for MSF epidemiological data, finding its shape on CRAN
epidict reads and applies the data dictionaries MSF field epidemiologists use to standardise outbreak and survey datasets. It was split out of the larger sitrep toolchain so the dictionary-reading and variable-renaming functions could ship on CRAN independently. Three releases in roughly two months have taken it from that initial separation to handling intersectional dictionaries.
cIRT vs epidict: editorial side-by-side
cIRT
0.0ANALYTICS
A choice-based IRT model published once in 2019 and kept compiling ever since
◆ Current state
cIRT implements Choice Item Response Theory, jointly modelling which item a respondent picks and how they perform on it — the setting where subjects choose between a harder and an easier question and the choice itself carries information. It comes out of the TMSA Lab, is built on Rcpp and RcppArmadillo, and has had one substantive release since reaching CRAN. Everything after early 2019 is build-system and toolchain upkeep.
◆ Where it's heading
The package's whole functional history fits in a two-day window in January 2019, when the CRAN release and its immediate follow-ups were tagged in one batch, followed a day later by a release enabling C++11 and OpenMP and fixing the choice generation procedure. Since then the releases track other people's deprecations: Armadillo dropping conversions, RcppArmadillo requiring a different Makevars, R raising its floor. The 2025 release is entirely of that kind, down to swapping the README to Quarto.
◆ Prediction
The dependency floors were just raised to current Rcpp and RcppArmadillo, so the next release is most likely the one after Armadillo deprecates something else.
epidict
0.0ANALYTICS
A spin-out dictionary reader for MSF epidemiological data, finding its shape on CRAN
◆ Current state
epidict reads and applies the data dictionaries MSF field epidemiologists use to standardise outbreak and survey datasets. It was split out of the larger sitrep toolchain so the dictionary-reading and variable-renaming functions could ship on CRAN independently. Three releases in roughly two months have taken it from that initial separation to handling intersectional dictionaries.
◆ Where it's heading
The arc is a package being unbundled and then reassembled as its dependencies land on CRAN. The 0.1.0 release deliberately dropped msf_dict_rename_helper() because its dependencies weren't available; 0.2.0 put it back. 0.3.0 is the first release that adds rather than restores, extending intersectional dictionary support and giving callers control over name cleaning.
◆ Prediction
Expect the next releases to keep widening dictionary coverage rather than changing the API, since the reinstatement work that dominated 0.1.0 to 0.2.0 is now finished.
Alternatives to cIRT and epidict
Other Analytics products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either cIRT or epidict.
fmtr
Rebuilding SAS's formatting layer in R, one format specification at a time
betaselectr
Standardised coefficients for models where standardising everything is wrong — but the feed only links out
SSN2
Stream-network spatial models learning to run on data that no longer fits in memory
BiocManager
Bioconductor's installer, frozen at 1.30.x and tuned almost entirely through environment variables
dcurves
Decision curve analysis, settled since 2022 and now moving only when its neighbours do
See all cIRT alternatives → · See all epidict alternatives →
Recent activity from cIRT and epidict
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 6mo agoepidictIntersectional dictionaries plus an opt-out for name cleaning
- 7mo agoepidictVariable-renaming helper returns once sitrep is reachable
- 9mo agoepidictFirst CRAN release, carved out of the sitrep toolchain
- 10mo agocIRTArmadillo deprecations cleared, build config modernised
- 4y agocIRTperson() argument fix and dependency floor raise
- 6y agocIRTpkgdown site added, CI moved to GitHub Actions
- 7y agocIRTOpenMP enabled and the choice generation bug fixed
- 7y agocIRTcIRT 1.0.0: Initial Package Released to CRAN
- 7y agocIRTChoice matrix gains hard and easy question ids
Frequently asked questions
What is the difference between cIRT and epidict?
Both compete on the same themes — r-package — within Analytics. cIRT and epidict are shipping at a similar cadence (velocity 0.0 vs 0.0, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is cIRT better than epidict?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. cIRT and epidict are shipping at a similar cadence (velocity 0.0 vs 0.0, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Analytics products to evaluate alongside.
What are the best alternatives to cIRT?
Top cIRT alternatives in Analytics are ranked by recent ship velocity. Browse the "cIRT alternatives" section above for the current picks, or visit /alternatives/cirt for the full list with editorial commentary on each.
What are the best alternatives to epidict?
Top epidict alternatives in Analytics are ranked by recent ship velocity. Browse the "epidict alternatives" section above for the current picks, or visit /alternatives/epidict for the full list with editorial commentary on each.