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Endeca MDEX Engine 

GENERAL (6.4.0) 

* Release Date: December 2012
  
* The release notes may have been updated since the release date.  
  The latest release notes are available through the Oracle Endeca 
  Commerce documentation page on the Oracle Technology Network at 
  http://www.oracle.com/technetwork/indexes/documentation/endecaguidedsearch-1552767.html 
  or by contacting Oracle Endeca Customer Support.

BUG FIXES (6.4.0)

Dgraph (6.4.0)

* IFCORE-1631: Fixed an intermittent Dgraph failure when printing out 
  log messages. 

* IFCORE-1642: To improve the accuracy of reported query times, query
  read and elapsed times are now measured starting from the first
  successful socket read from the client rather than from when the
  client connection is accepted.  This change may affect elapsed times
  reported in the request log and read/elapsed times reported on the
  Dgraph stats page.

* IFCORE-1645: UNICODE non-spacing marks are now included in the class
  of characters which compose words.  This change is needed to support
  languages such as Thai where vowels are represented by non-spacing marks.

* IFCORE-1657: A bug was fixed in the First relevance ranking module when 
  computing the relevance score on expanded terms. 

* IFCORE-1667: In the MAX API, the mdex:dimension-value-id-from-path() function 
  caused the Dgraph to fail if the function received an invalid path. 
  A catchable exception is now thrown instead.

KNOWN ISSUES (6.4.0)

Dgraph (6.4.0)

* IFCORE-1637: A dimension search query with D=* produces results ordered 
  by the default dimension value ranking regardless of the value of 
  the Dk parameter (Dimension Search Rank). Only a query with D=* has 
  this limitation with Dk. Relevance ranking may be used successfully 
  for other types of dimension search queries. 

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