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BAS vs campsismod

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

BAS vs campsismod: at a glance

FeatureBAScampsismod
SectorInfra & APIsInfra & APIs
Velocity score0.02.5
Sparks · 30d00
Top themesbayesian-statistics, model-averaging, mcmc, r-packagepharmacometrics, model-objects, json-interface, api-consolidation
Last editorial update1h ago6h ago
WebsiteVisit →Visit →

What is BAS?

A Bayesian model-averaging package spending its 2.0 on memory, not methods.

BAS performs Bayesian variable selection and model averaging for linear and generalized linear models, sampling from a model space too large to enumerate. The visible history splits cleanly: 2023-2024 added sampling machinery — an adaptive independent MCMC sampler with Horvitz-Thompson estimation, hereditary-constraint counting — while 2.0.0 in late 2025 reworked how sampler output is allocated in C. The 2.0.2 patch is a PROTECT fix for rchk warnings.

Read the full BAS trajectory →

What is campsismod?

The model layer under Campsis, renamed in step with it and increasingly JSON-addressable.

Campsismod holds the model object layer for the Campsis pharmacometric simulation suite: reading, editing and writing model definitions that Campsis then simulates. Its recent releases track a single programme, adding a JSON route into model objects and then renaming the whole API to snake_case in 1.4.0, a week before Campsis 1.9.0 did the same. Release notes are terse issue lists, so the reasoning behind each change has to be read from the sibling package.

Read the full campsismod trajectory →

BAS vs campsismod: editorial side-by-side

B
BAS
INFRA · APIS
0.0

A Bayesian model-averaging package spending its 2.0 on memory, not methods.

◆ Current state

BAS performs Bayesian variable selection and model averaging for linear and generalized linear models, sampling from a model space too large to enumerate. The visible history splits cleanly: 2023-2024 added sampling machinery — an adaptive independent MCMC sampler with Horvitz-Thompson estimation, hereditary-constraint counting — while 2.0.0 in late 2025 reworked how sampler output is allocated in C. The 2.0.2 patch is a PROTECT fix for rchk warnings.

◆ Where it's heading

Memory is the binding constraint and the releases say so directly. The hereditary-constraint counter, the GROW option, and the replacement of over-allocation with resizing all attack the same problem: n.models is a guess, and guessing high wastes memory on problems where few unique models are actually visited. The 2.0.0 work was additionally forced by R tightening its C API against non-API calls like SETLENGTH, a constraint every C-heavy CRAN package has been absorbing. Method development has been quiet since 1.7.x.

◆ Prediction

The 1.7.5 notes call the hereditary-constraint counting a first step and say future updates will cover other constraint types, including polynomials, which remain unhandled. That is the one concrete commitment in this history, though nothing since has returned to it.

C
campsismod
INFRA · APIS
2.5

The model layer under Campsis, renamed in step with it and increasingly JSON-addressable.

◆ Current state

Campsismod holds the model object layer for the Campsis pharmacometric simulation suite: reading, editing and writing model definitions that Campsis then simulates. Its recent releases track a single programme, adding a JSON route into model objects and then renaming the whole API to snake_case in 1.4.0, a week before Campsis 1.9.0 did the same. Release notes are terse issue lists, so the reasoning behind each change has to be read from the sibling package.

◆ Where it's heading

This package moves when Campsis needs it to move. The JSON constructor landed here in 1.3.0 and reached Campsis datasets a day later; parameter uncertainty generation was handed down from Campsis in that package's 1.6.0; and the snake_case migration started here before propagating up. That ordering makes Campsismod the place where suite-wide interface decisions are taken first, even though the visible payoff shows up in Campsis.

◆ Prediction

Expect Campsismod to keep absorbing model-level responsibilities that Campsis currently handles, and to extend the JSON mapping to whatever parts of the model object it does not yet cover. The entries give no signal on a 2.0, and with the rename already spent there is little reason to expect one soon.

Alternatives to BAS and campsismod

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 BAS or campsismod.

See all BAS alternatives → · See all campsismod alternatives →

Recent activity from BAS and campsismod

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

  1. 21d agocampsismodsnake_case migration lands here first
  2. 3mo agocampsismodBundled model suite refreshed
  3. 5mo agocampsismodJSON argument added to the CampsisModel constructor
  4. 7mo agocampsismodJSON import for Campsis models
  5. 8mo agoBASBAS 2.0.2
  6. 8mo agoBASBAS 2.0.0
  7. 1y agocampsismodreplaceAll fixed for unrecognised statements
  8. 1y agocampsismodPerformance tests skipped on CRAN
  9. 1y agoBASBAS 1.7.5
  10. 1y agoBASBAS 1.7.3
  11. 1y agoBASBAS 1.7.2
  12. 2y agoBASBAS 1.7.1

Frequently asked questions

What is the difference between BAS and campsismod?

They serve adjacent needs but don't currently overlap on shipped themes. campsismod is currently shipping more aggressively (velocity 2.5 vs 0.0), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.

Is BAS better than campsismod?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. campsismod is currently shipping more aggressively (velocity 2.5 vs 0.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.

What are the best alternatives to BAS?

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

What are the best alternatives to campsismod?

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