When the user is searching multiple namespaces assign boost to the article score based on namespace. This is the configuration lsearchd is:
Explicitly called out namespaces:
commonswiki : (0, 1) (6, 4)
<default> : (0, 1) (1, 0.0005) (2, 0.005) (3, 0.001) (4, 0.01), (6, 0.02), (8, 0.005), (10, 0.0005), (12, 0.01), (14, 0.02)
Defaults for the page:
If not defined the default it 1 for non-talk namespaces and .25 for talk pages. But, things like the "talk" namespace, as you can see, got 0.0005 in most wikis.
Honestly this should be configurable on wiki the same with boost-templates is with some sane defaults.
Version: unspecified
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=22774