cIRT
A choice-based IRT model published once in 2019 and kept compiling ever since
Comparison · Analytics
lazyeval vs momentuHMM
A side-by-side editorial comparison of lazyeval and momentuHMM — release velocity, themes, recent moves, and the top alternatives to consider.
lazyeval vs momentuHMM: at a glance
What is lazyeval?
A package retired in 2017 just got rewritten against R's public C API.
lazyeval was the tidyverse's pre-rlang non-standard evaluation layer, formally set aside in 2017 when tidy evaluation replaced it. After eight and a half years without a release, 0.2.3 arrives as a compliance rewrite: the implementation now uses R's public C API, and the release note states it may differ from the historical one in subtle ways. Nothing about the package's role has changed.
What is momentuHMM?
The animal-movement HMM workhorse, feature-frozen since 2021 and coasting on compiler patches
momentuHMM fits hidden Markov models to animal telemetry — multiple data streams, measurement error, temporally irregular tracks, hierarchical and mixture structures. It is one of the reference implementations in movement ecology and is cited as such. Its capability set has been essentially fixed since 2021; the last four years of releases are compiler, dependency and CRAN metadata work.
lazyeval vs momentuHMM: editorial side-by-side
lazyeval
0.0ANALYTICS
A package retired in 2017 just got rewritten against R's public C API.
◆ Current state
lazyeval was the tidyverse's pre-rlang non-standard evaluation layer, formally set aside in 2017 when tidy evaluation replaced it. After eight and a half years without a release, 0.2.3 arrives as a compliance rewrite: the implementation now uses R's public C API, and the release note states it may differ from the historical one in subtle ways. Nothing about the package's role has changed.
◆ Where it's heading
This is a dormancy revival driven entirely from outside, R core tightening what counts as the public C API forces packages using older internals to be rewritten or be archived. lazyeval is still a dependency deep in older package trees, so keeping it installable matters more than developing it. The caveat about subtle behavioural differences is the notable part: a package nobody is developing has changed behaviour in ways its release note declines to enumerate.
◆ Prediction
Expect no further development, only additional compliance releases if R core tightens the C API again.
momentuHMM
0.0ANALYTICS
The animal-movement HMM workhorse, feature-frozen since 2021 and coasting on compiler patches
◆ Current state
momentuHMM fits hidden Markov models to animal telemetry — multiple data streams, measurement error, temporally irregular tracks, hierarchical and mixture structures. It is one of the reference implementations in movement ecology and is cited as such. Its capability set has been essentially fixed since 2021; the last four years of releases are compiler, dependency and CRAN metadata work.
◆ Where it's heading
The development arc peaked with 1.5.0 in 2019, which brought hierarchical HMMs, discrete individual random effects and multivariate normal data streams, and effectively closed with 1.5.4 in 2021. What follows is a maintenance tail driven entirely by other people's changes: RcppArmadillo deprecating a function, Brobdingnag unexporting one, crawl dropping an import, CRAN asking for metadata edits. The package is stable in the sense that matters to its users and dormant in the sense that matters to its roadmap.
◆ Prediction
On this pattern the next release will be another upstream-forced patch rather than new modelling capability, unless a maintainer change or a new methods paper reopens development.
Alternatives to lazyeval and momentuHMM
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 lazyeval or momentuHMM.
MetaboAnalystR
The R engine behind MetaboAnalyst closes the gap from raw spectra to biological interpretation
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
See all lazyeval alternatives → · See all momentuHMM alternatives →
Recent activity from lazyeval and momentuHMM
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 4mo agolazyevalReimplemented against R's public C API after eight years dormant
- 8mo agomomentuHMMDrops an unexported Brobdingnag import
- 9mo agomomentuHMMSwitches to std::isfinite after RcppArmadillo deprecation
- 1y agomomentuHMMCRAN-requested metadata and documentation edits
- 3y agomomentuHMMraster moved to Imports after crawl dropped it
- 4y agomomentuHMMRandom-walk stream offset bug invalidates prior fits
- 5y agomomentuHMMdoFuture becomes the default parallel backend
- 8y agolazyevalDevelopment ends as the tidyverse moves to tidy evaluation
- 10y agolazyevalFormula-based lazy evaluation system introduced
- 11y agolazyevallazyeval 0.1.10
- 11y agolazyevallazyeval 0.1.9
Frequently asked questions
What is the difference between lazyeval and momentuHMM?
They serve adjacent needs but don't currently overlap on shipped themes. lazyeval and momentuHMM 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 lazyeval better than momentuHMM?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. lazyeval and momentuHMM 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 lazyeval?
Top lazyeval alternatives in Analytics are ranked by recent ship velocity. Browse the "lazyeval alternatives" section above for the current picks, or visit /alternatives/lazyeval for the full list with editorial commentary on each.
What are the best alternatives to momentuHMM?
Top momentuHMM alternatives in Analytics are ranked by recent ship velocity. Browse the "momentuHMM alternatives" section above for the current picks, or visit /alternatives/momentuhmm for the full list with editorial commentary on each.