Posts Tagged ‘W3C’
This week saw schema.org introduce vocabulary that enables websites to describe the actions they enable and how these actions can be invoked, in the hope that these additions will help unleash new categories of applications, according to a new post by Dan Brickley.
This represents an expansion of the vocabulary’s focus point from describing entities to taking action on these entities. The work has been in progress, Brickley explains here, for the last couple of years, building on the http://schema.org/Action types added last August by providing a way of describing the capability to perform actions in the future.
The three action status type now includes PotentialActionStatus for a description of an action that is supported, ActiveActionStatus for an in-progress action, and CompletedActionStatus, for an action that has already taken place.
Today the Web celebrates its 25th birthday, and we celebrate the Semantic Web’s role in that milestone. And what a milestone it is: As of this month, the Indexed Web contains at least 2.31 billion pages, according to WorldWideWebSize.
The Semantic Web Blog reached out to the World Wide Web Consortium’s current and former semantic leads to get their perspective on the roads The Semantic Web has traveled and the value it has so far brought to the Web’s table: Phil Archer, W3C Data Activity Lead coordinating work on the Semantic Web and related technologies; Ivan Herman, who last year transitioned roles at the W3C from Semantic Activity Lead to Digital Publishing Activity Lead; and Eric Miller, co-founder and president of Zepheira and the leader of the Semantic Web Initiative at the W3C until 2007.
While The Semantic Web came to the attention of the wider public in 2001, with the publication in The Scientific American of The Semantic Web by Tim Berners-Lee, James Hendler and Ora Lassila, Archer points out that “one could argue that the Semantic Web is 25 years old,” too. He cites Berners-Lee’s March 1989 paper, Information Management: A Proposal, that includes a diagram that shows relationships that are immediately recognizable as triples. “That’s how Tim envisaged it from Day 1,” Archer says.
Reuven Cohen of Forbes recently wrote, “New audible interaction methods and API standards could be poised to usher in a new generation of web technology. Technology specifically tailored to interact with us as individuals rather than having us adapt to interact with the web. At the heart of this transformation is a new crop of technologies focused on natural language interaction through the use of verbal commands. In its most simple form, speech recognition is the ability to translate spoken words into text. The technology is certainly not a new concept; it has been around for almost 60 years. In 1954, the so-called Georgetown-IBM experiment was an influential demonstration of the first machine-based translation program.” Read more
Almost exactly 10 years after the publication of RDF 1.0 (10 Feb 2004, http://www.w3.org/TR/rdf-concepts/), the World Wide Web Consortium (W3C) has announced today that RDF 1.1 has become a “Recommendation.” In fact, the RDF Working Group has published a set of eight Resource Description Framework (RDF) Recommendations and four Working Group Notes. One of those notes, the RDF 1.1 primer, is a good starting place for those new to the standard.
Lanthaler said of the recommendation, “Semantic Web technologies are often criticized for their complexity–mostly because RDF is being conflated with RDF/XML. Thus, with RDF 1.1 we put a strong focus on simplicity. The new specifications are much more accessible and there’s a clear separation between RDF, the data model, and its serialization formats. Furthermore, the primer provides a great introduction for newcomers. I’m convinced that, along with the standardization of Turtle (and previously JSON-LD), this will mark an important point in the history of the Semantic Web.”
We reported yesterday on the news that JSON-LD has reached Recommendation status at W3C. Three formal vocabularies also reached that important milestone yesterday:
The W3C Documentation for The Data Catalog Vocabulary (DCAT), says that DCAT “is an RDF vocabulary designed to facilitate interoperability between data catalogs published on the Web….By using DCAT to describe datasets in data catalogs, publishers increase discoverability and enable applications easily to consume metadata from multiple catalogs. It further enables decentralized publishing of catalogs and facilitates federated dataset search across sites. Aggregated DCAT metadata can serve as a manifest file to facilitate digital preservation.”
Meanwhile, The RDF Data Cube Vocabulary addresses the following issue: “There are many situations where it would be useful to be able to publish multi-dimensional data, such as statistics, on the web in such a way that it can be linked to related data sets and concepts. The Data Cube vocabulary provides a means to do this using the W3C RDF (Resource Description Framework) standard. The model underpinning the Data Cube vocabulary is compatible with the cube model that underlies SDMX (Statistical Data and Metadata eXchange), an ISO standard for exchanging and sharing statistical data and metadata among organizations. The Data Cube vocabulary is a core foundation which supports extension vocabularies to enable publication of other aspects of statistical data flows or other multidimensional data sets.”
Lastly, W3C now recommends use of the Organization Ontology, “a core ontology for organizational structures, aimed at supporting linked data publishing of organizational information across a number of domains. It is designed to allow domain-specific extensions to add classification of organizations and roles, as well as extensions to support neighbouring information such as organizational activities.”
JSON-LD has reached the status of being an official “Recommendation” of the W3C. JSON-LD provides yet another way for web developers to add structured data into web pages, joining RDFa.The W3C documentation says, “JSON is a useful data serialization and messaging format. This specification defines JSON-LD, a JSON-based format to serialize Linked Data. The syntax is designed to easily integrate into deployed systems that already use JSON, and provides a smooth upgrade path from JSON to JSON-LD. It is primarily intended to be a way to use Linked Data in Web-based programming environments, to build interoperable Web services, and to store Linked Data in JSON-based storage engines.” This addition should be welcome news for Linked Data developers familiar with JSON and/or faced with systems based on JSON.
SemanticWeb.com caught up with the JSON-LD specfication editors to get their comments…
Manu Sporny (Digital Bazaar), told us, “When we created JSON-LD, we wanted to make Linked Data accessible to Web developers that had not traditionally been able to keep up with the steep learning curve associated with the Semantic Web technology stack. Instead, we wanted people that were comfortable working with great solutions like JSON, MongoDB, and REST to be able to easily integrate Linked Data technologies into their day-to-day work. The adoption of JSON-LD by Google and schema.org demonstrates that we’re well on our way to achieving this goal.”
Ivan Herman Discusses Lead Role At W3C Digital Publishing Activity — And Where The Semantic Web Can Fit In Its Work
There’s a (fairly) new World Wide Web Consortium (W3C) activity, the Digital Publishing Activity, and it’s headed up by Ivan Herman, formerly the Semantic Web Activity Lead there. That activity was subsumed in December by the W3c Data Activity, with Phil Archer taking the role as Lead (see our story here).
Begun last summer, the Digital Publishing Activity has, as Herman describes it, “millions of aspects, some that have nothing to do with the semantic web.” But some, happily, that do – and that are extremely important to the publishing community, as well.
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