default values for BM25 Similarity (#18778)

assuming elasticsearch uses the lucene default values
2016-06-13 18:57:01 +02:00 · 2016-06-13 18:57:01 +02:00 · 26aacfff72
parent 4c15d143d9
commit 26aacfff72
1 changed files with 2 additions and 1 deletions
--- a/docs/reference/index-modules/similarity.asciidoc
+++ b/docs/reference/index-modules/similarity.asciidoc
@ -73,10 +73,11 @@ This similarity has the following options:
 [horizontal]
 `k1`::
    Controls non-linear term frequency normalization
-    (saturation).
+    (saturation). The default value is `1.2`.

 `b`::
    Controls to what degree document length normalizes tf values.
+    The default value is `0.75`.

 `discount_overlaps`::
    Determines whether overlap tokens (Tokens with