All, During the previous call we tried to understand what the combiner parameters were meant to be referring to. I searched the email archives and it appears that the correct interpretation is that the combiner parameter without a reference is associated with the combining algorithm itself. See here:
http://lists.oasis-open.org/archives/xacml/200404/msg00026.html The spec does say anything about this though, so we should add some text about that. Best regards, Erik