v2.34.0 (16 January 2024)

• Add option adaptation save_metric=1 to save adapted metric in separate JSON file with elements "stepsize", "metric_type" and "inv_metric" (#1203, #1229)
• New argument under output save_cmdstan_config. If set to 1, creates output_config.json which contains the argument tree and extra information (equivalent to the CSV file header) (#1204)
• Adds psis_resample and calculate_lp as options for Pathfinder (#1234)
• Removed usages of boost::lexical_cast (#1205)
• Resolved various compiler warnings (#1206)
• Fixed a linking issue when building stansummary (#1209)
• Fixed an issue where the default values of some arguments were not printed in sufficient precision (#1215)
• Improved the error users see if they are missing the stan or stan_math submodules (#1217)
• Improved the dependency detection in the build system (#1219)
• Added a warning when more PSIS draws are requested than total number of draws from single-pathfinders (#1221)
• Disallowed pathfinder when the model has no parameters. (#1221)
• Fixed a typo in make help-dev. (#1225)
• Fixed several edge cases and unexpected behaviors in the way output filenames were generated for multi-chain sampling and multi-path Pathfinder (#1228)
• Added a version.hpp header (#1231)

Documentation

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• CmdStan User's Guide 2.34

PDF

• CmdStan User's Guide 2.34