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Normal Topic Finding doubles in Chessbase (Read 3351 times)
Keano
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Re: Finding doubles in Chessbase
Reply #6 - 11/27/15 at 18:52:46
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It is a fine art/personal preference thing. Impossible to get them all.

It still annoys me that people are prepared to pay Chessbase for databases when the quality is poorer than my own. Bizarre chessbase can still get away with this.
  
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snits
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Re: Finding doubles in Chessbase
Reply #5 - 11/09/15 at 19:56:16
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codekiddy wrote on 11/09/15 at 11:38:13:
I think the best way would be to use Scid vs PC to delete duplicates.
That means exporting and the importing again.


Why would it require that? The maintenance window has the capabilities for removing duplicates.

Edit: If you are talking about exporting them from Chessbase and deleting the double games in scid, is there something you think is better about the delete twin games facility in scid vs what Chessbase provides?
« Last Edit: 11/10/15 at 02:26:42 by snits »  
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codekiddy
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Re: Finding doubles in Chessbase
Reply #4 - 11/09/15 at 11:38:13
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I think the best way would be to use Scid vs PC to delete duplicates.
That means exporting and the importing again.
  
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Paddy
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Re: Finding doubles in Chessbase
Reply #3 - 09/30/15 at 11:31:30
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Smyslov_Fan wrote on 09/29/15 at 23:15:56:
Yup, that's pretty much how I do it using an older version. I was reluctant to recommend it though because it does require a bit of space to save everything. There's no faster way to do it than to make backups is there?


Obviously large databases take up a lot of space but buying extra storage is quite cheap at the moment.

I don't find making back-ups much of a burden. I use the 'Back up database' in the Tools menu in CB12, and back up to an external hard drive and/or a memory stick.

By the way, I should have mentioned that after deleting all the doubles it's wise to make a back-up of the new slimmed-down database under a slightly different name, to avoid confusion with earlier back-ups.
  
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Smyslov_Fan
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Re: Finding doubles in Chessbase
Reply #2 - 09/29/15 at 23:15:56
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Yup, that's pretty much how I do it using an older version. I was reluctant to recommend it though because it does require a bit of space to save everything. There's no faster way to do it than to make backups is there?
  
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Paddy
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Re: Finding doubles in Chessbase
Reply #1 - 09/29/15 at 14:34:53
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I tend to operate quite conservatively in finding and deleting doubles, and I usually do it in at least three sweeps.

First, though, make two back-ups of the database onto different media (just in case)!

Then call up Find double games and set it as:
Keep better game
Clip doubles
Ignore year (particularly appropriate for corr. games)
Names: similar
Tournaments: Similar
Moves: exact

Then I'd scan the doubles identified. You can always spare a game from deletion if you decide it's not a double.
When I'm happy, I choose Remove deleted games.

If I sense that that there are more doubles in there, I set it to do a second sweep, set something like:
Keep better game
Clip Doubles
Ignore year
Names: Ignore
Tournaments: Ignore
Moves: exact

And again I'd scan the list to check before removing the deleted games.

I might then run it another time, this time with
Moves: similar
and see what that throws up.

I leave trying to find doubles among the annotated games till the very last, and after running the routine with the setting
Keep different annotators
Delete annotated games
I'd check the doubles found carefully to make sure I wasn't about to delete a game I'd want to keep.
  
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proustiskeen
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Finding doubles in Chessbase
09/25/15 at 18:23:55
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Does anyone know what best practices / settings look like when trying to find and remove doubles in Chessbase 12/13? There are a lot of settings and I'm getting wildly varying results when trying to dedupe a large correspondence database.
  
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