X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=NEWS;h=1a5aac64bcf1a7798aa7491249082862aa52c247;hb=813ea1ded4f995c80e4365224303486aa564afdc;hp=186603f3a6811699d601e3a985da251380b06708;hpb=f06ad01d969e37e5d050a238e395751de4b6ebc3;p=pazpar2-moved-to-github.git

diff --git a/NEWS b/NEWS
index 186603f..1a5aac6 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,95 @@
+--- 1.6.24 2013/01/18
+
+New merge attribute type: 'first', which takes all metadata fields
+from first target that returns the particular field.
+
+--- 1.6.23 2013/01/02
+
+Extend info command with hostname and YAZ SHA1
+Indent results for both command stat and info.
+
+Allow limit on merged content. The new configuration metadata
+element, limitcluster, configures that a metadata element (name) be used
+as limit name for search. Applies to the whole service (ie all targets),
+unlike pz:limitmap which is configured per-target (database).
+
+New feature: limitmap local:* matches against all metadata fields.
+
+Allow repeated list in limitmap spec . Separated by comma. For
+example: value="local:title,rpn:@attr 1=4".
+
+New element <message> in bytarget response. Holds diagnostic message
+of code (say 'Unsupported Use Attribute' for Bib-1 114).
+
+Improved logging for record ingestion failures.
+
+Avoid using struct icu_chain in non-YAZ_HAVE_ICU mode. In the rare case,
+when YAZ is compiled without ICU support.
+
+--- 1.6.22 2012/10/11
+
+Requires YAZ-4.2.40 to support native solr support. 
+
+Fix and improve logic handling whether or not to re-do search on sort 
+order changes. A sort order with change in ascending/descending only 
+whould not trigger a new search, which is required for targets with 
+native sorting capabilities. Each client is now checked if instructions
+(sortmap) exist for native sorting and only client that does requires 
+it is researched. Other clients is just re-ingesting the records, 
+they already have. The resultset is now cleared if any researching 
+is done. 
+
+Connection sharing between session has broken since version 1.6.8 with 
+introduction of logic that would minimize searching if pazpar2 could 
+detect this based on same query and limits and partly sort order. 
+This could lead to segementations violations.
+
+Added a chapter in the manaul about relevance ranking.
+
+--- 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 response in
+element <relevance_info>.. This is only printed if <rank debug="yes"/>
+is used in service.
+
+Record as returned by show/record command have a minimal indentation
+which makes things human-readable.
+
+New configuration of default sorting criteria (sort-default) in 
+service definition. If no criteria is defined it will be as before
+'relevance'. 
+
+Search command now supports sort parameter just as the show command. 
+If no parameter is give, it will use the service sort-default value.
+
+--- 1.6.19 2012/09/18
+
+Rank algorithm skips strings that gets normalized to empty string.
+For example, & and ! could map to the empty string. The weight for
+those terms is now 0 (as if they were not part of the query).
+
+Rank algorithm does not use CCL from limitmap; only from the query
+parameter (user query).
+
+Obey -w dir.
+
 --- 1.6.18 2012/09/17
 
 Rank algorithm configurable by 'rank' element inside service. So far