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A domain-agnostic simulation engine for structural causal models with heterogeneous variable types. Users define systems of continuous, categorical, and ordinal features, declare a directed acyclic graph (DAG) over them, attach typed generative mechanisms to each node, and simulate synthetic populations. A pre-built mechanism library covers all nine parent-type/child-type combinations. Vine copula mechanisms estimate full joint dependence from observed data via pair-copula constructions (Bedford and Cooke, 2002) <doi:10.1214/aos/1031689014>. Individual-level counterfactual queries are supported through partial propagation, which freezes unaffected random draws and resamples only the downstream subgraph, enabling individual treatment effect (ITE) estimation alongside population-level average treatment effects (ATE). Any pre-fitted predictive model can serve as a generative mechanism through three wrapper functions. Systems serialise to JSON for cross-language portability with the companion Python package.
| Version: | 0.1.2 |
| Depends: | R (≥ 4.1.0) |
| Imports: | stats |
| Suggests: | testthat (≥ 3.0.0), igraph, rvinecopulib (≥ 0.6.0), jsonlite, yaml, knitr, rmarkdown |
| Published: | 2026-10-28 |
| DOI: | 10.32614/CRAN.package.lepidoptera |
| Author: | Danilo Sarti [aut, cre] |
| Maintainer: | Danilo Sarti <danilosarti at rcsi.ie> |
| BugReports: | https://github.com/danilosarti/lepidoptera/issues |
| License: | MIT + file LICENSE |
| URL: | https://github.com/danilosarti/lepidoptera |
| NeedsCompilation: | no |
| Citation: | lepidoptera citation info |
| Materials: | NEWS |
| CRAN checks: | lepidoptera results |
| Reference manual: | lepidoptera.html , lepidoptera.pdf |
| Vignettes: |
Getting Started with lepidoptera (source, R code) |
| Package source: | lepidoptera_0.1.2.tar.gz |
| Windows binaries: | r-devel: lepidoptera_0.1.2.zip, r-release: lepidoptera_0.1.2.zip, r-oldrel: not available |
| macOS binaries: | r-release (arm64): lepidoptera_0.1.2.tgz, r-oldrel (arm64): lepidoptera_0.1.2.tgz, r-release (x86_64): lepidoptera_0.1.2.tgz, r-oldrel (x86_64): lepidoptera_0.1.2.tgz |
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These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.