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fix process_init_approx #984

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May 24, 2024
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fix process_init_approx #984

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4 changes: 3 additions & 1 deletion R/args.R
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Original file line number Diff line number Diff line change
Expand Up @@ -1290,6 +1290,8 @@ process_init_approx <- function(init, num_procs, model_variables = NULL,
model_variables = list(parameters = colnames(draws_df)[3:(length(colnames(draws_df)) - 3)])
}
draws_df$lw = draws_df$lp__ - draws_df$lp_approx__
# Replace NaN and Inf with -Inf
draws_df$lw[!is.finite(draws_df$lw)] <- -Inf
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# Calculate unique draws based on 'lw' using base R functions
unique_draws = length(unique(draws_df$lw))
if (num_procs > unique_draws) {
Expand All @@ -1315,7 +1317,7 @@ process_init_approx <- function(init, num_procs, model_variables = NULL,
draws_df$weight = exp(draws_df$lw - max(draws_df$lw))
} else {
draws_df$weight = posterior::pareto_smooth(
exp(draws_df$lw - max(draws_df$lw)), tail = "right", return_k=FALSE)
exp(draws_df$lw - max(draws_df$lw)), tail = "right", r_eff=1, return_k=FALSE)
}
init_draws_df = posterior::resample_draws(draws_df, ndraws = num_procs,
weights = draws_df$weight, method = "simple_no_replace")
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