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Comparison · Infra & APIs
cofad vs vimp
A side-by-side editorial comparison of cofad and vimp — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:maintenance
cofad vs vimp: at a glance
What is cofad?
Contrast analysis with a Shiny front end, shipping about one release a year
cofad performs contrast analyses for factorial designs in both between- and within-subject forms, and ships a Shiny GUI alongside the R interface. The 0.3.0 release in 2024 was the substantial one: a helper for calculating differences between two sets of lambdas for competing contrast analysis, improved summary output, removal of the plyr dependency, a rebuilt Shiny interface using standard elements after the sortable drag-and-drop proved unstable, and a change of maintainer to Johannes Titz. The most recent release is a one-line patch fixing degrees of freedom in the t-test table.
What is vimp?
Algorithm-agnostic variable importance, settled since 2022 and now answering CRAN checks
vimp performs inference on variable importance measures that do not depend on the fitting algorithm, using sample-splitting so tests stay valid under the zero-importance null. The statistical design settled in 2022: predictiveness measures gained their own S3 class, point estimation was decoupled from inference through the final_point_estimate argument, and method and family moved to the outer functions so binary outcomes work. The two 2025 releases are a CRAN documentation fix and an edge-case correction for cutoff-based measures when every prediction is the same value.
cofad vs vimp: editorial side-by-side
cofad
0.0INFRA · APIS
Contrast analysis with a Shiny front end, shipping about one release a year
◆ Current state
cofad performs contrast analyses for factorial designs in both between- and within-subject forms, and ships a Shiny GUI alongside the R interface. The 0.3.0 release in 2024 was the substantial one: a helper for calculating differences between two sets of lambdas for competing contrast analysis, improved summary output, removal of the plyr dependency, a rebuilt Shiny interface using standard elements after the sortable drag-and-drop proved unstable, and a change of maintainer to Johannes Titz. The most recent release is a one-line patch fixing degrees of freedom in the t-test table.
◆ Where it's heading
Development is slow and correctness-led. The record runs from a JOSS publication in 2021 through a near three-year gap to a release that both extended the method and repaired the GUI, then a degrees-of-freedom fix. Maintainer and author order changed in 0.3.0, which typically marks a handover rather than a burst of new work, and the cadence since is consistent with that.
◆ Prediction
Expect low-frequency correctness releases; the competing contrast analysis helper added in 0.3.0 is the most likely thing to be extended if anything is.
vimp
0.0INFRA · APIS
Algorithm-agnostic variable importance, settled since 2022 and now answering CRAN checks
◆ Current state
vimp performs inference on variable importance measures that do not depend on the fitting algorithm, using sample-splitting so tests stay valid under the zero-importance null. The statistical design settled in 2022: predictiveness measures gained their own S3 class, point estimation was decoupled from inference through the final_point_estimate argument, and method and family moved to the outer functions so binary outcomes work. The two 2025 releases are a CRAN documentation fix and an edge-case correction for cutoff-based measures when every prediction is the same value.
◆ Where it's heading
Substantive development ended in 2022, followed by one narrow addition — a cluster bootstrap for correlated data in 2023 — and two housekeeping releases. What remains visible are careful decisions about the boundary between estimation and inference, including the warning that a Wald interval will not be centred on the point estimate when the full-data or averaged option is used. The maintainer is keeping the package correct and installable rather than extending it.
◆ Prediction
Expect maintenance releases keyed to CRAN check changes; new predictiveness measures are the plausible extension, since the S3 class added in 2.3.0 was introduced specifically to make adding them simpler.
Alternatives to cofad and vimp
Other Infra & APIs 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 cofad or vimp.
Cursor
Cursor's agents stop waiting to be asked - they subscribe, and they hold a goal until it's done.
incident.io
Nexus does the diagnosis; the agent is now reaching into the status page too.
Warp
Warp turned its quarter of software-factory essays into infrastructure you can buy.
Okta
Okta's developer blog is a Cross App Access campaign, now diluted by advocacy-team storytelling.
tealeaves
A leaf-temperature model that finished its job in 2020 and has stayed finished
Recent activity from cofad and vimp
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 11mo agovimpUpdate PPV, NPV, Sensitivity, Specificity
- 1y agovimpFix documentation NOTEs
- 1y agocofadDegrees of freedom corrected in the t-test table
- 2y agocofadCompeting contrast helper, rebuilt Shiny GUI, maintainer change
- 2y agovimpAdd cluster bootstrap
- 3y agovimpEnhanced VIM point estimation
- 3y agovimpS3 class for predictiveness measures
- 4y agovimpSpecify 'method' and 'family' in outer functions
- 4y agocofadDocumentation and references for JOSS publication
- 4y agocofadShiny GUI added; aggregated-data function and 0-variance fix
Frequently asked questions
What is the difference between cofad and vimp?
Both compete on the same themes — maintenance — within Infra & APIs. cofad and vimp 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 cofad better than vimp?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. cofad and vimp 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 Infra & APIs products to evaluate alongside.
What are the best alternatives to cofad?
Top cofad alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "cofad alternatives" section above for the current picks, or visit /alternatives/cofad for the full list with editorial commentary on each.
What are the best alternatives to vimp?
Top vimp alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "vimp alternatives" section above for the current picks, or visit /alternatives/vimp for the full list with editorial commentary on each.