From 1d06594709c8529861911d550aa41018fc855b40 Mon Sep 17 00:00:00 2001
From: fweber144 <fweber144@protonmail.com>
Date: Tue, 10 Jan 2023 14:43:15 +0100
Subject: [PATCH] Fix and enhance the `NEWS.md` entry for the simplification of
 KL divergence to cross-entropy.

---
 NEWS.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/NEWS.md b/NEWS.md
index 4772ce98d..16a4f9d27 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -11,7 +11,7 @@ If you read this from a place other than <https://mc-stan.org/projpred/news/inde
 ## Minor changes
 
 * The deprecated function `ggplot2::aes_string()` is not used anymore, thereby avoiding an occasional soft-deprecation warning thrown by **ggplot2** 3.4.0. (GitHub: #367)
-* The KL divergence from the reference model to the submodels was simplified to the corresponding cross-entropy part (i.e., the reference model's negative entropy was dropped), for consistency of "typical" and "custom"" reference models. This should not be a user-facing change as users are discouraged to make use of specific output elements (like the former element `kl` of objects of class `projection` or `vsel`) directly. (GitHub: #369)
+* The KL divergence from the reference model to a submodel is simplified to the corresponding cross-entropy (i.e., the reference model's entropy is dropped), with some caveats described in the documentation for output element `ce` of `project()`. The reason for this change is that the former KL divergence assumed the reference model's family to be the same as the submodel's family, which does not need to be the case for custom reference models. This should not be a user-facing change as users are discouraged to make use of specific output elements (like the former element `kl` of objects of class `projection` or `vsel`) directly. (GitHub: #369)
 * Improvements in the documentation (especially for argument `family` of `init_refmodel()` and `get_refmodel.default()`).
 
 # projpred 2.2.2