← Back to home
Comparison · Infra & APIs

midr vs PEIMAN2

A side-by-side editorial comparison of midr and PEIMAN2 — release velocity, themes, recent moves, and the top alternatives to consider.

midr vs PEIMAN2: at a glance

FeaturemidrPEIMAN2
SectorInfra & APIsInfra & APIs
Velocity score0.00.0
Sparks · 30d00
Top themesexplainable-ai, surrogate-models, shapley, survival-analysisproteomics, post-translational-modification, enrichment-analysis, reproducibility
Last editorial update47m ago1h ago
WebsiteVisit →Visit →

What is midr?

A black-box interpreter reaches CRAN, then learns multi-class and survival responses

midr explains black-box models by fitting an interpretable surrogate through Maximum Interpretation Decomposition — main effects plus second-order interactions, with exact Shapley values for the surrogate. Two months after its first CRAN release it can take a matrix response, which covers multi-class classification and survival models, and hold collections of fitted interpretations in midlist and midrib objects for comparison.

Read the full midr trajectory →

What is PEIMAN2?

PEIMAN2 cut its annotation database loose from its release cycle without breaking CRAN.

PEIMAN2 does enrichment analysis over post-translational modifications, testing whether a protein list is enriched for particular PTMs against UniProt-derived annotations, with translation functions bridging to mass spectrometry workflows. Its answers are only as current as its bundled database, and until June that database could only be refreshed by releasing a new package version. Version 1.1.0 changes that.

Read the full PEIMAN2 trajectory →

midr vs PEIMAN2: editorial side-by-side

M
midr
INFRA · APIS
0.0

A black-box interpreter reaches CRAN, then learns multi-class and survival responses

◆ Current state

midr explains black-box models by fitting an interpretable surrogate through Maximum Interpretation Decomposition — main effects plus second-order interactions, with exact Shapley values for the surrogate. Two months after its first CRAN release it can take a matrix response, which covers multi-class classification and survival models, and hold collections of fitted interpretations in midlist and midrib objects for comparison.

◆ Where it's heading

The releases move outward along two axes at once: what can be interpreted, and how much of it fits in memory. Version 0.5.3 rebuilt the fitting path to avoid materialising large design matrices and added a save.memory option; 0.6.0 widened the response from a vector to a matrix and added parametric link functions. Class and argument names were shortened in the same release, so the package is still willing to break itself this early.

◆ Prediction

With multiple models now held in one object and visualisation methods for them, comparison across models is the surface most likely to fill out next — the collection classes exist but the notes describe manipulation and plotting rather than any comparison metric.

P
PEIMAN2
INFRA · APIS
0.0

PEIMAN2 cut its annotation database loose from its release cycle without breaking CRAN.

◆ Current state

PEIMAN2 does enrichment analysis over post-translational modifications, testing whether a protein list is enriched for particular PTMs against UniProt-derived annotations, with translation functions bridging to mass spectrometry workflows. Its answers are only as current as its bundled database, and until June that database could only be refreshed by releasing a new package version. Version 1.1.0 changes that.

◆ Where it's heading

The package has been moving from a fixed snapshot toward versioned, user-selectable data. Earlier releases updated the bundled database in place — 1.0.0 shipped the March 2025 version and said little else — which meant the annotation vintage was whatever the package version implied. Now update_peiman_database() downloads and caches external database files and UniProt PTM lists, enrichment workflows take a database_version argument, and the mass-spec translators take a ptmlist_version, so an analysis can pin a dated database rather than a package release. The CRAN-safe default is preserved deliberately: loading, examples and checks still use the bundled internal data and need no network.

◆ Prediction

Version pinning is now expressible but the release notes do not describe how a chosen version is recorded in output, so surfacing the active database version in results is the natural companion. The database and the UniProt PTM list are versioned separately, which leaves room for a combined manifest.

Alternatives to midr and PEIMAN2

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 midr or PEIMAN2.

See all midr alternatives → · See all PEIMAN2 alternatives →

Recent activity from midr and PEIMAN2

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 2mo agoPEIMAN2Database updates decouple from package releases
  2. 5mo agomidrMatrix responses bring multi-class and survival models in scope
  3. 7mo agomidrFirst CRAN release: MID surrogate models for black-box explanation
  4. 7mo agomidrMemory-efficient fitting for large design matrices
  5. 1y agoPEIMAN2Bundled database refreshed to the March 2025 UniProt vintage
  6. 1y agoPEIMAN2Documentation fix for the second example dataset
  7. 2y agoPEIMAN2Background lists for SEA and PSEA; tidyverse dependency dropped

Frequently asked questions

What is the difference between midr and PEIMAN2?

They serve adjacent needs but don't currently overlap on shipped themes. midr and PEIMAN2 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 midr better than PEIMAN2?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. midr and PEIMAN2 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 midr?

Top midr alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "midr alternatives" section above for the current picks, or visit /alternatives/midr for the full list with editorial commentary on each.

What are the best alternatives to PEIMAN2?

Top PEIMAN2 alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "PEIMAN2 alternatives" section above for the current picks, or visit /alternatives/peiman2 for the full list with editorial commentary on each.