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Use more functions from the posterior package #249

Description

@avehtari

Release 2.7.0 imports posterior. We could use more posterior package functions. This would reduce possibility of having different implementations and thus reduce maintenance burden. Potential functions to replace

  • ess_rfun
    • fft_next_good_size
    • autocovariance
  • part of do_psis_i
    • psis_smooth_tail
    • n_pareto
    • enough_tail_samples
  • ps_khat_threshold
  • pareto_smooth
    • .pareto_smooth_tail
    • as_one_logical
    • should_return_NA
    • is_constant
  • ess_tail
    • ess_quantile
    • .ess_quantile
    • .ess
    • .split_chains
  • gpdfit
    • lx
    • adjust_k_wip
    • qgpd

Activity

  1. VisruthSK commented on Sep 25, 2025

    @VisruthSK
    Member

    What other functions should be updated outside of the ones already changed in #289, #290?

  2. added this to the v3.0.0 milestone on Jun 9, 2026
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