[Data-modeling] About Freebase dump data and relation between twoTypes

Jeff Prucher jeff at metaweb.com
Mon Dec 29 18:08:04 UTC 2008


> -----Original Message-----
> From: data-modeling-bounces at freebase.com 
> [mailto:data-modeling-bounces at freebase.com] On Behalf Of 
> Nguyen Minh Tuan
> Sent: Thursday, December 25, 2008 8:16 PM
> To: data-modeling at freebase.com
> Subject: [Data-modeling] About Freebase dump data and 
> relation between twoTypes
> 
> Hi all,
> I have just studied in Freebase. The database is very 
> interesting and, I hope my project can use it. I have got 
> some question, I have search on 
> http://www.freebase.com/discuss/hub, but have not yet found. 
> So I post my questions in the maillist.
> Firstly about Freebase dump data structure :
> - The next time you export your new dump data is when ?
> - I downloaded your dump data, there is many folder and file, 
> and I do not really understand its structure :
>     + Does each folder correspond to a domain ?
>     + Does each domain correspong to a folder ? :D that is 
> two different questions, I mean 1-1 correspondance.
>     + Does files correspond to a type ?
>     + Does a type correspond to a file ?

Somebody else will be able to help you with the dump questions, but I can
help with the others:

> Secondly, Is there inheritance relation between two Types ? 
> Because I found that almost folders in dump date have not any 
> sub folder, instead of the "base" folder.

There is no strict inheritance in Freebase.  There are a couple ways that
the type system can be set up to resemble inheritance.

> Thirdly, should I post my question in the mailling list OR on 
> the discussion on the web site. ?

Either place should get you a response, but the mailing lists are probably
the best place for questions about the data dumps.

> And finally, how can I search on old questions on the mailling list ?

Mailing lists are archived at lists.freebase.com, and can be searched either
by constraining a Google search to that site or via MarkMail.

Jeff Prucher



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