RDF関連メモ on Planet masaka : 2009-05

Planet masakaから2009年5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。

2009-05-29

Enterprises, Struggling to Manage Your Data? Give The Semantic Web a Try... [ReadWriteWeb]
A new PricewaterhouseCoopersTechnology report explains how the Semantic Web and Linked Data can help enterprises manage their large scale data better - by Richard MacManus, 2009-05-29 (original post at 22:44)
Europeana Semantic Search
A research prototype of a semantic search engine for Europeana (original post at 20:27)

@myakura, we need to know version because #html5 has changed semantics of several elements/attributes (original post at 10:39)

Just printed first printing copies of Semantic HTML/XHTML arrived this morning (at 13:10)

URI Declaration in Semantic Web Architecture
argues that it is important to Semantic Web architecture to distinguish between core assertions for a URI, which are mandatory for anyone choosing to use that URI to make statements about the resource it denotes, and ancillary assertions for the URI, which are optional. Core assertions are those provided in an authoritative declaration for that URI; all other assertions involving that URI are ancillary assertions - by David Booth, 2007-07-25 (original post at 14:19)
The URI Lifecycle in Semantic Web Architecture
proposes a set of roles and responsibilities for establishing and determining a URI's resource identity through its lifecycle (Preprint from IJCAI-09) - by David Booth, 2009-05-19 (original post at 14:02)

RDFa in HTML 5
This document is a very rough initial attempt to define the process of extracting RDF triples from an HTML or XHTML document. The goal is for all RDFa implementations to extract the same collection of triples from a given document - Totally Unofficial Unfinished Experimental Draft - by Philip Taylor, 2009-05-18 (original post at 09:31)

Linked Data is Blooming: Why You Should Care [ReadWriteWeb]
If there's one idea we want to leave you with about Linked Data, it's that the data is there to be used. Linked Data enables data to be opened up and connected so that people can build interesting new things from it - by Richard MacManus, 2009-05-18 (original post at 23:43)
Google's Rich Snippets and the Semantic Web [O'Reilly Radar]
while Google is famous as a machine-learning company, their initial breakthrough with pagerank was based on the realization that there was hidden metadata in the link structure of the web - by Tim O'Reilly, 2009-05-14 (original post at 15:52)

RDFa in HTML: a lightweight profile
This document extends that significant advantage beyond XML / XHTML into traditional HTML-based documents. Since HTML is by far the most prevalent grammar for web pages, enabling their easy annotation will dramatically increase the penetration of semantic information throughout the web - by Shane McCarron (ed.), 2009-05-14 (original post at 09:36)
Understanding the New Web Era: Web 3.0, Linked Data, Semantic Web [ReadWriteWeb]
it's clear to us that the time for structured data has come. We're beginning to see it in the current wave of Linked Data sets being released, and in the support that big companies like Google and Yahoo are showing for structured data - by Richard MacManus, 2009-05-14 (original post at 01:14)

Tokenising the semantic web [webBackplane]
By adding a new attribute -- @token -- to the CURIE processing rules, we can tokenise full URIs, which gives authors the same level of simplicity that Microformats has. The key difference though, is that this tokenisation is completely scaleable, and so overcomes one of the major drawbacks of Microformats -- by Mark Birbeck, 2009-04-30 (original post at 15:10)
good to see that Google is updating cluttered documents and schema about structured data, though slowly (original post at 11:51)

Re: [Welcoming feedback] Semantic Web: Information wants to be useful
Be careful. Using owl:SameAs too freely is very dangerous. This is a current hot-button topic in several SWeb application areas. People should only use owl:sameAs when the entities are not only *exactly* identical, but also what each of their 'defining' (home) ontologies say about them is compatible - by Pat Hayes, 2009-05-07 (original post at 00:37)

new book "Semantic HTML/XHTML" (#rdfa, #microformats, #grddl, #lod in Japanese) is now ready for pre-order at Amazon: http://bit.ly/12SamM (original post at 23:10)

Annotating structured data that HTML has no semantics for [whatwg]
added to HTML5 a simple syntax (three new attributes) based on RDFa. It doesn't have the full power of RDF, because that didn't seem to be necessary to address the use cases. It doesn't really have anything in common with Microformats; I didn't find the Microformats syntax to be very convenient - by Ian Hickson, 2009-05-10 (original post at 03:12)

ugh, new hgroup element and redefined semantics of header in #html5 draft, via @sideshowbarker (original post at 08:24)