[pdb-discuss] [ol-discuss] http://publicdomainworks.net/ and OL Domain Model

Mon Mar 9 13:33:23 UTC 2009

Dear Karen,

Thanks for the info. This sounds a reasonably efficient way to get a
listing of PD works from OL.

To focus for a moment on the domain model question. Our approach to
mapping FRBR to a domain model is roughly:

PDW Item --> FRBR Manifestation/Item
PDW Work --> FRBR Work (and sometimes Expression ...)
PDW Person --> FRBR Entity

We allow works to refer to others works and persons to be associated
with both Works and Persons (with a role attribute). Full details plus
some use cases (more on this below ) are in the comments at the top of
this file:

<http://knowledgeforge.net/pdw/hg/file/tip/pdw/model/frbr.py>

I'm interested in making sure we map well with OL. If I understand correctly:

OL Edition --> FRBR Manifestation
OL Work (in staging) --> FRBR Work
OL Author --> FRBR Entity

This seems quite close but I wondered, for example, about how OL deals
with translations or new editions of a work, do these count as new
works or simply new 'editions'? (Or how FRBR does for that matter!)

Below I've included 2 specific use cases which we've been using to
motivate our efforts. Any comments on these would be very welcome (I'm
still rather hazy on the distinction between expressions/works and
manifestations/items and how they would apply to recordings ...).

Regards,

Rufus

##  Use Cases

1. Book: "Forsyte Saga (vol 1)" by Galsworthy

work: Forsyte Saga (vol 1)
expression: Forsyte Saga X Edition
manifestation/item: Penguin book isbn XXXXX published ...

In our system we'd have a single work for the Forsyte saga. A new edition would
not be registered as a new work *unless* it represented such a major change as
justifying a new copyright (for example a translation would fall into this
category).

The Manifestation/Item becomes an Item in our system.

2. Recording: von Karajan conducting Beethoven Symphony No. 1 in A minor

work: Beethoven Symphony in A minor
work: (recording/performance): von Karajan recording
  * date ...

manifestation/item (release)
  * may contain many recordings
  * has tracks etc

In our system:
  * Work 1: Beethoven Symphony
  * Work 2: von Karajan recording
  * Item: The release

2009/3/6 Karen Coyle <kcoyle at kcoyle.net>:
> Rufus, you should be able to populate your db from OL records by selecting
> all OL items with full text -- I believe that all full text items in OL are
> in the public domain (otherwise, it wouldn't be possible to display the full
> text). Right now, OL full text is keyed to manifestation-level records
> (because the full text is inherently of a manifestation, in the FRBR sense,
> that is a single published book instance). The data would be available,
> though, to fill in your person and work data elements. The difficulty would
> be that you would get some duplicates from OL because sometimes more than
> one edition has been scanned. But otherwise it seems to be a good source,
> and OL has over a million full text at the moment.
>
> kc
>
> Rufus Pollock wrote:
>>
>> I'd meant to come in earlier in the thread about relational DBs and
>> OL's Domain Model.
>>
>> For quite a while now (we first started back in 2005) the Open
>> Knowledge Foundation has had a project entitled Public Domain Works
>> (PDW) which is focused on building a database listing public domain
>> material especially recordings:
>>
>>  <http://www.publicdomainworks.net/>
>>
>> (As an aside: a constant problem for PDW has been obtaining
>> substantial good *open* sources of data. The initial plan had been to
>> obtain data direct from catalogues such as the British Library's or
>> even the Library of Congress but it turns out that there are some
>> serious 'rights' issues involved).
>>
>> Unlike the OL PDW have a rather more traditional schema set up which
>> can be seen in:
>>
>>  <http://knowledgeforge.net/pdw/hg/file/tip/pdw/model/frbr.py>
>>
>> I'm still not entirely clear of the OL's schema, and particularly how
>> it would map across to our one. It would useful to get more clarify
>> here since this would make it easy both to pull and push data to the
>> OL system.
>>
>> Rufus
>>
>> PS: I'm also involved (quite independently) in my capacity as an
>> economist at the University of Cambridge in research for the EU on the
>> size and value of the public domain (I hope to post about this in a
>> separate email).
>> _______________________________________________
>> Ol-discuss mailing list
>> Ol-discuss at archive.org
>> http://mail.archive.org/cgi-bin/mailman/listinfo/ol-discuss
>>
>>
>>
>
> --
> -----------------------------------
> Karen Coyle / Digital Library Consultant
> kcoyle at kcoyle.net http://www.kcoyle.net
> ph.: 510-540-7596   skype: kcoylenet
> fx.: 510-848-3913
> mo.: 510-435-8234
> ------------------------------------
>
>