X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=NEWS;h=4a3d378666e9319b5f2c7ecc174db16c85bd0a06;hb=d0aea584697ca17916844a892c3f17a6dd2afb70;hp=d9165e80f88de98632b5d34aa73dcc2ec9241f0d;hpb=49737fc1110a572e32168401fb70b9de0088d843;p=pazpar2-moved-to-github.git

diff --git a/NEWS b/NEWS
index d9165e8..4a3d378 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,20 @@
+--- 1.6.21 2012/09/24
+
+Rank tweak: follow=number will increase mult by number if two terms
+occur next to each other; number-1 if they are one term apart , .. 0
+if they are number a part (all in order). Default is 0 (following
+terms has no effect).
+
+Rank tweak: lead=k will divide mult by 1 + log2(1+k*l) where k is
+value given by lead and l is length from beginning of field where
+term occurs (l=0 for first term, l=1 for second term, ..). Default
+value of k is 0.0.
+
+Rank tweak: length=strategy. length="linear" if mult is to be divided
+by length (existing, default behavior), length="log" if mult is to be 
+divided by log2(1+length), length="none" if mult is not to be affected
+by length.
+
 --- 1.6.20 2012/09/21
 
 Rank algorithm details may be printed as part of show reseponse in