I don't know of any international registries but in the UK the Collections Trust (formerly MDA) maintains a list of unique codes allocated to museums for documentation purposes (intended to be machine readable). These are five-letter alphabetical codes (an example of which is contained in a CRM scope note....). For example, the code OXCMS: is used for Oxfordshire County Museums Service. The scheme is voluntary but widely used to ensure that all museum objects in the UK have a UID. I guess that this could be made internationally unique by adding an ISO country prefix. But the CRM is supposed to represent actual documentation practice and unless similar schemes exist on a worldwide basis this wouldn't take us much further...
Best wishes, Matthew -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Vadim Soshkin Sent: 01 December 2008 15:24 To: Martin Doer; Vladimir Ivanov Cc: crm-sig; [email protected] Subject: Re: [Crm-sig] Fwd: URI policies Dear Martin, You are right museum object could be identified by museum local identifiers and global identifier of the museum itself. But I do not know any registry to provide unique identification of museum. Do you have suggestions how to uniquely identify museum? Thanks and best regards Vadim -----Original Message----- From: [email protected] [mailto:[email protected]]On Behalf Of martin Sent: Sunday, November 30, 2008 1:50 PM To: Vladimir Ivanov Cc: crm-sig; [email protected] Subject: Re: [Crm-sig] Fwd: URI policies Dear Vladimir, The point is not if the URIs are human readable. The question is, if we have cataloguing rules, that could allow a larger group to come up with the same URI, without creating one identifier for two things. If I call you xxx578o900yybnn, I have to reconcile every reference to you. We cannot avoid that in general, but we could create some reasonable rules to reduce the number of negotiations. AACR2 is a good example from library science. Since a museum object is at one place at a time, its current location is unique, as is its current inventory number. These numbers are publicly known. Why should I call the object xjdisugfvisg, once we could find a more reasonable URI? We could at least reduce some complexity of the co-reference problem. The same holds for people registered in authority files, as long as we are sure whom we talk about. Best, Martin Vladimir Ivanov wrote: > ---------- Forwarded message ---------- > From: Vladimir Ivanov <[email protected]> > Date: 2008/11/29 > Subject: Re: [Crm-sig] URI policies > To: Guenther Goerz <[email protected]> > > > Dear Guenther , > > 2008/11/29 Guenther Goerz <[email protected]>: >> Dear all, >> >> just a brief remark and a recommendation >> >> On Fri, Nov 28, 2008 at 12:46 PM, Vladimir Ivanov <[email protected]> wrote: >>> Dear all, >>> >>> Why do we need human-readable URIs? >> Well, because occasionally humans read code and this case a label such >> as "reply-to-vladimir" has some advantage over "wrzlpfrmpft", although >> my machine doesn't care. > > ;) > I mean, why do we need human-readable URIs (for machine processing > resources, tasks, etc.)? > > It's clear to me, that the first label ("reply-to-vladimir") is ambiguous, > according to multiple senses of "vladimir". > The second one ("wrzlpfrmpft") means nothing at all. > > In both cases, we need additional information > to understand that meaning (if we want to). > > It's good for CRM classes and properties to have readable labels. > Martin's question was also about instances (e.g. museum objects). > > Best, > Vladimir >> But, jokes aside: The "Cool URIs" paper >> http://www.w3.org/TR/2007/WD-cooluris-20071217/ >> may provide a constructive answer to Martin's original request. >> >> Regards, >> -- Guenther >> >>> Any row in a certain database table could be identified by unique >>> (surrogate) key. >>> An algorithm should only generate different URI for different resources. >>> So, we need to define a difference between resources (or their representations). >>> >>> If identifier should not have any additional inner structure (and meaning), >>> then we could use GUID. >>> >>> For example, "http://url.de/E19_ZZZ";, where ZZZ is GUID. >>> Add name or content of resource into URI is not a very good idea. >>> >>> Alternatively, we could use hashing and add any desirable structure into URI. >>> For example, "http://url.de/cityname_streetname_HASHCODE";. >>> >>> How to make a URI out of DNA? >>> >> Best regards, >>> Vladimir >>> >>> >>> 2008/11/27 martin <[email protected]>: >>>> Dear All, >>>> >>>> I suggest to discuss in more details policies to use URIs in RDF or OWL instances. >>>> >>>> For instance, how to describe a museum: >>>> >>>> How to distinguish the Website from the Actor, if we refer to the museums domain name: >>>> MUSEUM/http://www.gnm.de/ ? >>>> >>>> http://www.gnm.de/MUSEUM ? >>>> http://www.gnm.de/ACTOR? >>>> >>>> If we have a museum URI, we could generate all object IDs by inventory number + museum URL: >>>> >>>> http://www.gnm.de/OBJECT/AB_45678900_1870 ? >>>> http://www.gnm.de/PHYSICAL_OBJECT/... ? >>>> http://www.gnm.de/CRM_E19/... ? >>>> >>>> Does anyone know, if the Getty ULAN suggests a good practice for URIs for ULAN entries? >>>> >>>> I believe these are issues that should be easy to resolve, and should be quickly resolved. >>>> >>>> More complicated: How to you make a URI out of an postal address. Any idea, examples??? >>> >>>> Best, >>>> >>>> Martin >>>> -- >>>> >>>> -------------------------------------------------------------- >>>> Dr. Martin Doerr | Vox:+30(2810)391625 | >>>> Principle Researcher | Fax:+30(2810)391638 | >>>> | Email: [email protected] | >>>> | >>>> Center for Cultural Informatics | >>>> Information Systems Laboratory | >>>> Institute of Computer Science | >>>> Foundation for Research and Technology - Hellas (FORTH) | >>>> | >>>> Vassilika Vouton,P.O.Box1385,GR71110 Heraklion,Crete,Greece | >>>> | >>>> Web-site: http://www.ics.forth.gr/isl | >>>> -------------------------------------------------------------- >>>> >>>> _______________________________________________ >>>> Crm-sig mailing list >>>> [email protected] >>>> http://lists.ics.forth.gr/mailman/listinfo/crm-sig >>>> >>> _______________________________________________ >>> Crm-sig mailing list >>> [email protected] >>> http://lists.ics.forth.gr/mailman/listinfo/crm-sig >>> > _______________________________________________ > Crm-sig mailing list > [email protected] > http://lists.ics.forth.gr/mailman/listinfo/crm-sig > -- -------------------------------------------------------------- Dr. Martin Doerr | Vox:+30(2810)391625 | Principle Researcher | Fax:+30(2810)391638 | | Email: [email protected] | | Center for Cultural Informatics | Information Systems Laboratory | Institute of Computer Science | Foundation for Research and Technology - Hellas (FORTH) | | Vassilika Vouton,P.O.Box1385,GR71110 Heraklion,Crete,Greece | | Web-site: http://www.ics.forth.gr/isl | -------------------------------------------------------------- _______________________________________________ Crm-sig mailing list [email protected] http://lists.ics.forth.gr/mailman/listinfo/crm-sig _______________________________________________ Crm-sig mailing list [email protected] http://lists.ics.forth.gr/mailman/listinfo/crm-sig
