HydroPortailStats
France's national flood statistics, ported out of Fortran and into R.
Comparison · Infra & APIs
BayLum vs daedalus
A side-by-side editorial comparison of BayLum and daedalus — release velocity, themes, recent moves, and the top alternatives to consider.
BayLum vs daedalus: at a glance
What is BayLum?
Bayesian luminescence dating that finally replaced its folder-structure input format.
BayLum runs Bayesian age models for luminescence and combined OSL/C-14 dating on top of JAGS. The 2024 release rebuilt the front end: a single create_DataFile() replaces the separate single-grain and multi-grain generators, reads BIN/BINX and XSYG directly, and takes a YAML config in place of the old prescribed folder layout. Since then the work has been CRAN compliance and documentation.
What is daedalus?
An epidemic-economic model teaching its interventions to react to the outbreak itself.
daedalus couples an infectious-disease model to sector-level economic costs, letting users test non-pharmaceutical interventions against both epidemic and fiscal outcomes. Over autumn 2025 the intervention layer went from a single fixed closure to sequential timed NPIs and then to closures that lift in response to the model's own instantaneous reproduction number. Alongside that, the cost functions were reworked so illness states map more carefully onto lost productivity.
BayLum vs daedalus: editorial side-by-side
BayLum
0.0INFRA · APIS
Bayesian luminescence dating that finally replaced its folder-structure input format.
◆ Current state
BayLum runs Bayesian age models for luminescence and combined OSL/C-14 dating on top of JAGS. The 2024 release rebuilt the front end: a single create_DataFile() replaces the separate single-grain and multi-grain generators, reads BIN/BINX and XSYG directly, and takes a YAML config in place of the old prescribed folder layout. Since then the work has been CRAN compliance and documentation.
◆ Where it's heading
Two long-running threads have converged: making JAGS runs survivable (parallel methods, halved MCMC memory, injectable custom models) and making the inputs survivable (YAML config, consistency checks, auto-detected sample names). With the deprecated generators on their way out, the next phase is removal rather than addition. Release cadence is roughly annual and slowing.
◆ Prediction
The deprecated Generate_DataFile(), Generate_DataFile_MG() and LT_RegenDose() are the obvious next casualties; a release that drops them would be the first breaking change since the YAML rework.
daedalus
0.0INFRA · APIS
An epidemic-economic model teaching its interventions to react to the outbreak itself.
◆ Current state
daedalus couples an infectious-disease model to sector-level economic costs, letting users test non-pharmaceutical interventions against both epidemic and fiscal outcomes. Over autumn 2025 the intervention layer went from a single fixed closure to sequential timed NPIs and then to closures that lift in response to the model's own instantaneous reproduction number. Alongside that, the cost functions were reworked so illness states map more carefully onto lost productivity.
◆ Where it's heading
The arc is toward a model that behaves like a policy simulator rather than a scenario calculator: interventions now have their own state machine, R_t is computed inside the ODE system, and event handling has been pulled out of the output object. Correction releases sit between the feature ones, including an indexing fix the maintainers flag as required for accurate projections. The versioning is patch-level but the changes are structural.
◆ Prediction
With R_t and the next-generation matrix now available in-model, the likely next step is richer response rules keyed to those quantities; the entries give no signal on when a stable 1.0 arrives.
Alternatives to BayLum and daedalus
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 BayLum or daedalus.
bsvarSIGNs
Sign, zero and narrative restrictions brought into the bsvars ecosystem.
estimatr
Fast design-based estimators for experiments, coasting on CRAN patches.
ggdist
The grammar of uncertainty visualization, now drawing the uncertainty in its own estimates.
ipaddress
IP address vectors for R that hit 1.0 and then went quiet.
ltertools
A column-key toolkit for stitching decades of ecological field data into one table.
See all BayLum alternatives → · See all daedalus alternatives →
Recent activity from BayLum and daedalus
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 9mo agodaedalusVersion bump for a symposium preview build
- 9mo agodaedalusInterventions now lift in response to live R_t ⚡
- 10mo agoBayLumCRAN anchor fixes and an R 4.4 floor
- 10mo agodaedalusWithin-sector contact scaling corrected to quadratic
- 10mo agodaedalusIllness-driven absence reworked in the cost model
- 10mo agodaedalusMultiple sequential time-limited closures
- 11mo agodaedalusState array indexing corrections; earlier projections unreliable
- 2y agoBayLumOne data-file function and a YAML config replace the folder layout ⚡
- 3y agoBayLumMCMC memory halved; density plots for age distributions
- 3y agoBayLumParallel JAGS runs and a file-scaffolding helper
- 4y agoBayLumCustom model injection and RNG control for parallel runs
- 5y agoBayLumParallel JAGS experiment plus IntCal20-era calibration data
Frequently asked questions
What is the difference between BayLum and daedalus?
They serve adjacent needs but don't currently overlap on shipped themes. BayLum and daedalus 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 BayLum better than daedalus?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. BayLum and daedalus 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 BayLum?
Top BayLum alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "BayLum alternatives" section above for the current picks, or visit /alternatives/baylum for the full list with editorial commentary on each.
What are the best alternatives to daedalus?
Top daedalus alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "daedalus alternatives" section above for the current picks, or visit /alternatives/daedalus for the full list with editorial commentary on each.