RDF関連メモ on Planet masaka : 2009-10

Planet masakaから2009年10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。

2009-10-29

BLOGIC [ISWC 2009 Invited Talk]
to capture the intuition that an RDF graph is like a node-arc diagram... "gaph" = RDFgraph + surface, a blank node is a mark on a surface, surfaces provide a way to define syntactic scope in RDF. Negative surfaces claim that an RDF graph on them is false, can include surfaces inside other surfaces... Then, OWL (and much of RIF) are simply organized collections of RDF abbreviations and restrictions - by Pat Hayes, 2009-10-27 (original post at 17:33)
excited about @PatHayes talk slide http://www.slideshare.net/Pa... . Blogic, RDF-graph on surface(s), and RIF/OWL as syntactic sugar. phew! (original post at 16:54)

Semantic Overflow
For questions about semantic web techniques and technologies - by Andrew Matthews (original post at 15:07)
Music recommendation and Linked Data [DBTune blog]
Exploiting links surrounding music, and all the cross-domain information that makes it so rich, to create better music recommendation systems which combine the what is recommended with the why it is recommended - by Yves Raimond, 2009-10-27 (original post at 13:58)

OWL 2 for RDF vocabularies [Semai]
There was some talk about constraint expression languages but I suggested that OWL, and especially OWL 2, already do quite a lot of that. Couple that to closed-world validation tools in the style of Eyeball and we already have quite a lot of what is needed - by Dave Reynolds, 2009-10-06 (original post at 22:12)

@danja, is there any test implementation for SPARQL Entailment ? (original post at 11:32)
wow, Entailment Regimes ! Six SPARQL 1.1 First Drafts Published http://www.w3.org/News/2009#... (original post at 09:50)
SPARQL 1.1 Query (FPWD)
describes changes .. to form SPARQL 1.1 Query... The mandatory features are: Aggregate functions, Subqueries, Negation, Project expressions. The time-permitting features are:, Property paths, Basic federated query, Commonly used SPARQL functions, Query language syntax refinement - by Steve Harris and Andy Seaborne (eds.), 2009-10-22 (original post at 09:42)
SPARQL 1.1 Update (FPWD)
an update language for RDF graphs... Update operations are performed on a collection of graphs in a Graph Store. Operations are provided to change existing RDF graphs as well as create and remove graphs in the Graph Store - by Simon Schenk and Paul Gearon (eds.), 2009-10-22 (original post at 09:37)
SPARQL 1.1 Service Description (FPWD)
a method for discovering and vocabulary for describing SPARQL services made available via the SPARQL Protocol - by Gregory T. Williams (ed.), 2009-10-22 (original post at 09:35)
SPARQL 1.1 Entailment Regimes
to specify conditions such that SPARQL can be used with entailment regimes other than simple entailment. Currently the semantics of SPARQL queries under RDF and RDFS entailment is defined - by Birte Glimm and Bijan Parsia (eds.), 2009-10-22 (FPWD) (original post at 09:26)

Jena Semantic Web Framework
a Java framework for building Semantic Web applications. It provides a programmatic environment for RDF, RDFS and OWL, SPARQL and includes a rule-based inference engine. Jena is open source and grown out of work with the HP Labs Semantic Web Programme - announced by Andy Seaborne, 2009-10-22 (original post at 19:22)

Instance Record and Object Notation (irON) Specification
irON is an abstract notation and associated vocabulary for specifying RDF triples and schema in non-RDF forms [e.g. JSON (irJSON), XML (irXML) and CSV (commON)]... The irON notation and vocabulary is designed to allow the conceptual structure ("schema") of datasets to be described, to facilitate easy description of the instance records that populate those datasets, and to link different structures for different schema to one anothe - by M. Bergman and F. Giasson, 2009-10-20 (rev 0.82) (original post at 16:07)

The Web of Services: Machine-Accessible Services [ReadWriteWeb]
The problem with all of this is that each of the tens of thousands of services is accessible but not findable by a machine without a machine-understandable description... So, what would machines be capable of if services were annotated with semantic descriptions? Service discovery; Contracting and execution; Billing or revenue sharing; Replacement on failure, based on experience; Service orchestration - by Alexander Korth, 2009-10-16 (original post at 10:19)

Semantic Social Networking [S is for Semantics]
who owns the data that you put on social networking servers? FOAF understood this issue over a decade ago, when they envisioned a distributed social network ... This is a key idea behind the Social Web - not just social networking on the web, but making the network part of the web itself - by Dean Allemang, 2009-10-15 (original post at 22:40)

Sir Tim Berners-Lee: The Semantic Web Has Arrived and the Obama Administration is "Onboard" [Beet.TV]
the semantic web is about putting data on the web... So we've got a move to put data on the web so people can actually process it and analyze it and there's a really big push right now in a lot of countries, the UK and the US very particularly, to put government data on the web - by Tim Bernes-Lee (transcription), 2009-10-09 (original post at 22:24)

Product Modelling using Semantic Web Technologies [W3C XG Report]
This report describes the role and scope of product data, and initial work in two technical areas: Quantities, Units & Scales; Product Structure i.e. the decomposition of wholes in parts and the interconnection relationships between these parts - by Michel Bohms et al. (eds), 2009-10-08 (original post at 23:41)

HTML+RDFa
This specification defines rules and guidelines for adapting the RDF in XHTML: Syntax and Processing (RDFa) specification for use in the HTML5 and XHTML5 members of the HTML family. The rules defined in this document not only apply to HTML5 documents in non-XML and XML mode, but also to HTML4 documents interpreted through the HTML5 parsing rules [FPWD] - by Manu Sporny et al. (eds), 2009-10-07 (original post at 13:28)

OWL 2 RL closure [Ivan’s private site]
The second issue was the contrast between RDF triples and “generalized” RDF triples, ie, triples where literals can appear in subject positions and bnodes can appear as properties. OWL 2 explicitly says that it works with generalized triples and the OWL 2 RL rule set also shows why that is necessary - by Ivan Herman, 2009-09-29 (original post at 01:05)