How does SharePoint determine files are duplicates in search results?

In the search results, some files are grouped as duplicates (a hyperlink view duplicates appears under the search result).
How does SharePoint determines that 2 files are duplicates?
How does SharePoint determines the one that is shown in the search result (the 'main' file)?
Can we influence both?
Patrik | My Blog

I don't know if this helps, but I've been looking into the same problem that's come to light a few times during troubleshooting customised deployments of SharePoint recently. This is my understanding so far (paraphrased from http://blogs.technet.com/harikumh/archive/2008/11/14/some-interesting-facts-about-sharepoint-2007-search.aspx):
Document similarity or matching for the purposes of identifying duplicates is based only on a hash of the content of the document. None of the file properties are used in calculating the hash (i.e. things like filename, author, create and modify dates are not used). The SQL table MSSDuplicateHashes in the SSP’s search database holds all the 64bit hashes necessary to determine if one document is a near-duplicate of another against each indexed document. This table is read while doing a search to determine duplicates if removal of duplicates is enabled.
Steve

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VC wrote:
Go to that application > shared components > Static files you should see the file.the problem is that there are multiple files with that name, and that sometimes the file being served is linked to application "0" and it doesn't show in the "shared components" interface ...
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Filename is unique for the given workspace[and application]I disagree. I have multiple files with the same name ... the root of this problem ...
so apparently the only parameters that matter are the workspace and the file name. The associated application is irrelevant.How is your static file referenced??
But not always, try associating an static file with and application and reference it using #APP_IMAGES# instead of #WORKSPACE_IMAGES#
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http://docs.oracle.com/cd/E37097_01/doc/doc.42/e35125/concept_sub.htm#BEIDCGAJ
http://docs.oracle.com/cd/E37097_01/doc/doc.42/e35125/ui_file_manage.htm#HTMDB06011
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Also, I find it somewhat misleading that you can have files associate with applications that don't exist anymore (e.g. have been deleted).
Edited by: GChierico on Apr 11, 2013 2:16 PM

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Please vote or mark your question answered, if my reply helps you

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Hi,
You can achive in many ways... demo
Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Users\Pavan>sqlplus scott/tiger@orcl
SQL*Plus: Release 11.2.0.1.0 Production on Sun Dec 19 14:19:36 2010
Copyright (c) 1982, 2010, Oracle. All rights reserved.
Connected to:
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How does SharePoint determine files are duplicates in search results?

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