Add compression functionality for sccomp and brms posteriors - #1
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- Introduced `compress_posterior_to_mclust()` for compressing posterior distributions using Gaussian Mixture Models. - Added `sample_from_mclust()` to regenerate samples from compressed posteriors. - Created vignettes for compressing sccomp and brms models, demonstrating workflows and key functions. - Updated `.gitignore` to exclude temporary files and added new files for benchmarks and documentation.
stemangiola
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Copilot and
zhanchen
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Copilot and
zhanchen
November 18, 2025 03:29
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@zhanchen have a look, to the two Rmd files. I have added routines to convert brms and sccomp output to approximate posterior, to be saved online and download them and routines to reconstruct the posterior draws from the approximates one. it is 1000 times less disk space. Try to have a go, after the poster is done. |
… comprehensive tests for `compress_brmsfit` and `compress_sccomp` functionalities - Updated `evaluate_posterior_density_mclust` to convert vectors to row matrices for consistent input handling. - Introduced extensive test cases for `compress_brmsfit` and `compress_sccomp`, covering various scenarios including error handling, parameter management, and integration tests. - Ensured compatibility with `cmdstanr` backend and validated the structure of compressed outputs.
- Introduced a new R Markdown document demonstrating the process of compressing and regenerating a funnel posterior using Gaussian Mixture Models with the `mclust` package. - Included detailed steps for generating samples, visualizing the original and regenerated distributions, and evaluating compression quality. - Provided code for statistical comparisons and density evaluations to assess the performance of the compression method. - Added visualizations for GMM components and their weights to illustrate the fitting process.
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compress_posterior_to_mclust()for compressing posterior distributions using Gaussian Mixture Models.sample_from_mclust()to regenerate samples from compressed posteriors..gitignoreto exclude temporary files and added new files for benchmarks and documentation.