RDF関連メモ on Planet masaka : 2008-07

Planet masakaから2008年7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。

2008-07-31

@dwd, ah sorry, RFC 3920 mentions UCS2, but as character set, not encoding (original post at 22:16)
Berlin SPARQL Benchmark
BSBM defines a suite of benchmarks for comparing the performance of storage systems across architectures, built around an e-commerce use case, query mix illustrates the search and navigation pattern of a consumer looking for a product (original post at 16:24)

tried to get RDF for Roger Norrington on BBC Music Linked Data: only got sameAs DBpedia + html page of MusicBrainz ... not very interesting (original post at 22:00)
IESR: Information Environment Service Registry
a machine readable registry of electronic resources to help learning, teaching and research; also information about resources; can access with REST and get several schema XML formats (original post at 21:26)
wonders 2-use-cases story is too simplistic and naive, and inclines to agree with Bijan (re: Southampton Pub thread on semantic-web list) (original post at 18:26)

Does metadata matter? [eFoundations]
a 30 minute slidecast (using 130 slides), to cover a broad sweep of history from library cataloguing, thru the Dublin Core, Web search engines, IEEE LOM, the Semantic Web, arXiv, etc - by Andy Powell, 2008-07-18 (original post at 16:02)
cleaning up flickr2foaf, and getting much better FOAF RDF (original post at 15:24)
@bengee, Semantic CrunchBase with SPARQL endpoint is great ! (original post at 10:52)

wants some way to attatch time value directly into a triple, @kasei. If there is something 'timestamp' in RDF, that's far better (original post at 08:14)
Semantic Search Arrives at the Web
intro to semantic search, comparison btw NLP and semweb, etc: "the trend is toward sacrificing some expressive power in return for usability and robustness in the face of mistakes" - by Peter Mika, 2008-07-18 (original post at 00:16)

@kasei, that's to express time dependent value in RDF, e.g. :boy foaf:age "10"^^tag:asof.org,2008-07-19. (original post at 13:41)

receiving term-end reports. Assignment is, of cource, application of RDF ;-) (original post at 23:16)
'Internationalized Email Headers' (utf8headers) and 'SMTP extension for internationalized email address' will be Experimental RFCs (original post at 11:56)
surprised that Creative Commons has changed its schema namespace without notice (or any announcement ?) (original post at 09:39)
found @markbirbeck's argument on RFC 2731 interesting (original post at 07:40)

Scalable Highly Expressive Reasoner [alphaWorks]
SHER provides ontology analytics (OWL-DL without nominals) over highly expressive ontologies; can reason on approx 7 million triples in seconds; answers semantic queries issued in a SPARQL format, and relies on DB2 (original post at 00:39)

hmm... "An ontology of signs" seems to be an attempt to capture meta level of RDF semantics, which might fall into self-reference loop (original post at 19:01)
Everything is a Sign [the wheel and the hub]
Salience, Signification, Representation: the basis for a general semiosis framework which will be a solid theoretical foundation to the emerging semiosphere, e.g. Semantic Web - by Bernard Vatant, 2008-07-15 (original post at 18:39)
... and it should be careful to distinguish global property (e.g. video:duration) from local attribute (e.g. start), otherwise get odd RDF (original post at 16:08)

@dorzey, that's "How do you deprecate URIs? Re: OWL-DL and linked data" on semantic-web and public-lod @w3c, probably you have read them (original post at 23:05)
discussed about RDF representation of academic paper biblio (search results) (original post at 12:46)

thinking how to express ordered authors list in RDF. Container model is a possibility, with additional URI for rdf:Seq itself (original post at 18:07)

is there very few needs to have search results as RDF ? (original post at 23:41)
wondering what's going on SPARQL Calendar Demo (original post at 08:14)

don't want to read so many verbos posts on RDF and XML (original post at 23:42)
semanticflash - Google Code
Semantic Web Framework for the Flash Platform (Flash, Flex, AIR et Al) ... main objective is to bring the power of the Semantic Web to the Flex guys (at 11:48)
何でいまさら"RDF Parsing in XSLT"とか"comparing XML and RDF data models"なんて話題になるのかと思ったら、xml.comの記事が元だったのか (original post at 11:39)
reading AtomTriples I-D ... hmm, let each feed (and each entry) has mapping from Atom to RDF ... not sure who will do this (original post at 10:47)

discussed how to describe different statuses of one person, say 'as a bassist' and 'as a semweb advocate' in RDF (original post at 01:07)
@vant, thanks for pointer, hopinge RDF parsers will follow this update (original post at 00:42)