NEWS.md

In posterior: Tools for Working with Posterior Distributions

posterior 1.5.0

Enhancements

• Added support for nested-Rhat via rhat_nested (#256)
• Added support for indexing draws in rvars using rvars (#282):
• x[i] or x[i] <- y where i is a scalar logical rvar slices (or updates) x by its draws. Thus, if y <- x[i], then y is the same shape as x but with sum(i) draws.
• x[[i]] or x[[i]] <- y where i is a scalar numeric rvar slices (or updates) x by selecting the ith element within each corresponding draw. Thus, if y <- x[[i]], then y is an rvar of length 1.
• Added rvar_ifelse(), which is a variant of ifelse() that accepts (and returns) rvars (#282).
• Array broadcasting for rvars has been made faster.

Bug Fixes

• Ensure rfun() works with primitive functions (#290) and dots arguments (#291).
• Provide implementations of vctrs::vec_proxy_equal(), vctrs::vec_proxy_compare(), and vctrs::vec_proxy_order().
• Minor future-proofing of cbind(<rvar>), rbind(<rvar>), and chol(<rvar>) for R 4.4 (#304).
• Ensure that bind_draws(<draws_rvars>) regenerates draw ids when binding along chains or draws; this also fixes a bug in split_chains(<draws_rvars>) (#300).

posterior 1.4.1

Bug Fixes

• Delay applying tibble::num() formatting to output from summarise_draws() until print() is called so that summary output can be easily converted to a vanilla data frame (#275).

posterior 1.4.0

Enhancements

• Added new rvar_factor() and rvar_ordered() subtypes of rvar() that work analogously to factor() and ordered() (#149). See the new section on rvar_factors in vignette("rvar").
• The draws_df(), draws_list(), and draws_rvars() formats now support discrete variables stored as factors / ordereds (or rvar_factors / rvar_ordereds). If converted to formats that do not support discrete variables with named levels (draws_matrix() and draws_array()), factor-like variables are converted to numerics.
• Made match() and %in% generic and added support for rvars to both functions.
• Added modal_category(), entropy(), and dissent() functions for summarizing discrete draws.
• Allow lists of draws objects to be passed as the first argument to bind_draws() (#253).
• Improving formatting of summarise_draws output via tibble::num.
• print.rvar() and format.rvar() now default to a smaller number of significant digits in more cases, including when printing in data frames. This is controlled by the new "posterior.digits" option (see help("posterior-package")).
• Implemented faster vec_proxy.rvar() and vec_restore.rvar(), improving performance of rvars in tibbles (and elsewhere vctrs is used).

Bug Fixes

• Ensure that as_draws_rvars() preserves dimensions of length-1 arrays (#265).
• Fix some minor compatibility issues with rvar, vctrs, dplyr, and ggplot2 (#267, #269).

posterior 1.3.1

• Minor release that fixes some CRAN check failures.

posterior 1.3.0

Enhancements

• Implement for_each_draw(x, expr), which executes expr once for each draw of x, exposing variables in x as arrays of the shape implied by the indices in their names (#224).
• Implement subset_draws(), thin_draws(), and resample_draws() for rvars (#225).
• Allow weights to be optional in resample_draws() (#225).
• Add an implementation of drop() for rvars.
• Speed up subsetting of draws_list objects. (#229, #250)

Bug Fixes

• Support remaining modes of diag() for rvars (#246).
• Better parsing for named indices in as_draws_rvars(), including nested use of [, like x[y[1],2] (#243).
• Allow 0-length rvars with ndraws() > 1 (#242).
• Ensure 0-length rvars can be cast to draws formats (#242).
• Don't treat length-1 rvars with more than 1 dimension as scalars when casting to other formats (#248).

posterior 1.2.2

Enhancements

• Improve the mcse_sd function to not make a normality assumption. (#232)

posterior 1.2.1

Bug Fixes

• Correctly transform lists of data.frames into draws_list objects.
• Correctly drop variables on assigning NULL in mutate_variables. (#222)

posterior 1.2.0

Enhancements

• support casting to/from rvar and distributional::dist_sample (#109)

Bug Fixes

• fix hidden variables in bind_draws.draws_df when binding more than two objects thanks to Jouni Helske (#204)
• fix output of pillar::glimpse() when used on a data frame containing rvars (#210)
• drop "draws" and "draws_df" classes from draws_df objects if meta data columns are removed by a dplyr operation (#202)
• fix output of print.draws_df() on objects with unrepaired draws (#217)
• ensure variance() works properly with summarise_draws() (#219)

posterior 1.1.0

Enhancements

• use matrixStats to speed up convergence functions (#190) and rvar summaries (#200)

Bug Fixes

• ensure that as_draws_rvars() works on lists of lists (#192)
• fix some vector recycling issues with rvar_rng (#195)
• ensure that subset_draws() respects input variable order, thanks to Karl Dunkle Werner and Alexey Stukalov (#188)

Other Changes

• No longer check for constant-per-chain input in effective sample size diagnostics as this is overly conservative especially for ess_tail. (#198)

posterior 1.0.1

• ensure that all unit tests pass on all CRAN environments
• fix a problem that sometimes lead to rvars being unnecessarily slow (#179)

posterior 1.0.0

• initial CRAN release

posterior 0.1.0

• beta release

posterior documentation built on Nov. 2, 2023, 5:56 p.m.