Data Mining Breaking Changes?
- From: "Dejan Sarka" <dejan_please_reply_to_newsgroups.sarka@xxxxxxxxxx>
- Date: Tue, 16 Sep 2008 08:53:38 +0200
BOL 2008, Breaking Changes to Analysis Services Features in SQL Server 2008
(http://msdn.microsoft.com/en-us/library/ms143742.aspx) page says:
Previous versions of Analysis Services support using the MINIMUM_LEAF_CASES
parameter with the Microsoft Decision Trees algorithm, and the
MINIMUM_CLUSTER_CASES parameter with the Microsoft Clustering algorithm.
Since SQL Server 2005 Analysis Services, both of these parameters have been
renamed to MINIMUM_SUPPORT. If these parameters were used in mining models
created using the previous version of Analysis Services , the parameters are
not migrated.
From my tests, in SSAS 2008, they are migrated and even used in processingthe model. BTW, there is definitely a typo in BOL, as you can see from the
copied from BOL referring to SSAS 2005 and not 2008. Nevertheless,
forgetting about the typo, I am interested whether this behavior in SSAS
2008 is intended, is it a bug, undocumented feature, or simply an error in
BOL.
--
Dejan Sarka
.
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