RDF関連メモ on Planet masaka : 2009-09

Planet masakaから2009年9月のRDF／セマンティック・ウェブ関連メモを抽出してまとめたものです。

2009-09-29

Linking a public government dataset into the semantic web with RDF [O'Reilly Broadcast]
using RDF well within its limits is actually very convenient. And, more importantly, the linked data approach is not bogus: by which I mean that the use of the RDF adds a semantic that is not present otherwise and that would be useful for processing... I regard the RDF in early versions of, say, RSS, as ... bogus because all the RDF pariphenalia didn't seem to result in any added value - by Rick Jelliffe, 2009-09-27 (original post at 09:55)

thanks SchemaWeb (2003-2009) for the service, whose owner "has confirmed that he closed SchemaWeb.info for good", http://lists.w3.org/Archives... (original post at 23:36)

new iCalendar spec (RFC 2445bis) finally became RFC 5545 http://www.rfc-editor.org/rf... (original post at 09:41)

On Data Reconciliation Strategies and Their Impact on the Web of Data [Stefano’s Linotype]
The semantic web architects correctly identified a priori reconciliation as the biggest scalability impediment for a world-scale data integration effort and decided to avoid worrying about it... [but] If it is not natural for the relational density of a web of data to increase over time ... I cannot help but think that any effort tasked to promote and increase such density will look and feel just like Freebase - by Stefano Mazzocchi, 2009-07-18 (original post at 21:38)
Continuing Thoughts on Reconciliation [Stefano’s Linotype]
The difference between RDFa and Microdata (syntactic differences aside) is basically the fact that the proponents of the first believe that once everybody naturally starts reusing existing ID schemes and ontologies a densely connected web of semantically reconciled information will come together naturally. The second just want to focus on immediate values and avoid speculating on what’s going to happen next - by Stefano Mazzocchi, 2009-09-23 (original post at 20:03)

W3C Provenance Incubator Group
to provide a state-of-the art understanding and develop a roadmap in the area of provenance for Semantic Web technologies, development, and possible standardization - 2009-09 (original post at 17:27)
RDFa for DocBook?
Adding RDFa to DocBook would make it possible to add a class of semantic annotations to DocBook without changing the schema. But is that a good idea? ... I'm not sure - by Norman Walsh, 2009-09-22 (original post at 09:45)

Being Structured and Having Semantics is not Enough [Internet Alchemy]
"Well, it’ll be in this field, UNLESS this other field is X, in which case it’ll be in field Y, UNLESS..." For non-librarians, MARC is a structured data format whose fields have well-defined and rather precise semantics. The missing pieces are that the data structure is not self-describing and there is no strategy for discovering the rules - by Ian Davis, 2009-09-16 (original post at 17:56)
Extension:RDFa [MediaWiki]
This extension provides the functionality of outputing semantic data of Mediawiki pages in the RDFa format. The RDFa formatted data generated from a page will have the page itself as the subject. The properties and objects are retrived from the semantic data of this page - by Jin Guang Zheng and Jie Bao, 2009-09-11 (original post at 16:18)

Naming Properties and Relations (comment) [benjamin nowack's blog]
personally find "role-noun" easier to support in RDF apps than the older hasPropertyOf (now often considered anti-)pattern. And inverse properties are just painful, as they usually require some form of inference to streamline the user experience... different notations users might be comfortable with, for entering factoids using an unstructured input form... could identify the following patterns - by Benjamin Nowack, 2009-09-15 (original post at 11:17)

FRBRoo Introduction [CIDOC CRM]
The FRBRoo is a formal ontology intended to capture and represent the underlying semantics of bibliographic information and to facilitate the integration, mediation, and interchange of bibliographic and museum information... common goals of: a) Expressing the IFLA FRBR model with the concepts, tools, mechanisms, and notation conventions provided by the CIDOC CRM, and: b) Aligning (possibly even merging) the two object-oriented models (original post at 21:51)

RFC 5646 "Tags for Identifying Languages" published, incorporates ISO 639-3 and ISO 639-5, and obsoletes RFC 4646 (original post at 23:48)