The Web Content Accessibility Guidelines Working Group (WCAG WG) requests review of draft updates to Notes that accompany WCAG 2.0: Techniques for WCAG 2.0 (Editors’ Draft) and Understanding WCAG 2.0 (Editors’ Draft). Comments are welcome through 14 February 2014. (This is not an update to WCAG 2.0, which is a stable document.) To learn more about the updates, see the Call for Review: WCAG 2.0 Techniques Draft Updates e-mail. Read about the Web Accessibility Initiative (WAI).

Three Recommendations were published today to enhance data interoperability, especially in government data. Each one specifies an RDF vocabulary (a set of properties and classes) for conveying a particular kind of information:

• The Data Catalog (DCAT) Vocabulary is used to provide information about available data sources. When data sources are described using DCAT, it becomes much easier to create high-quality integrated and customized catalogs including entries from many different providers. Many national data portals are already using DCAT.
• The Data Cube Vocabulary brings the cube model underlying SDMX (Statistical Data and Metadata eXchange, a popular ISO standard) to Linked Data. This vocabulary enables statistical and other regular data, such as measurements, to be published and then integrated and analyzed with RDF-based tools.
• The Organization Ontology provides a powerful and flexible vocabulary for expressing the official relationships and roles within an organization. This allows for interoperation of personnel tools and will support emerging socially-aware software.

All three vocabularies have been developed by the Government Linked Data Working Group, but they are applicable beyond just government data. For a list of data sources or software known to be using these vocabularies, see the “Implementation Report” linked from each document. Learn more about the Data Activity.

The RDF Working Group has published two Recommendations today:

• JSON-LD 1.0. 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.
• JSON-LD 1.0 Processing Algorithms and API. This specification defines a set of algorithms for programmatic transformations of JSON-LD documents. Restructuring data according to the defined transformations often dramatically simplifies its usage. Furthermore, this document proposes an Application Programming Interface (API) for developers implementing the specified algorithms.

Learn more about the Data Activity.

The NFC Working Group has published a First Public Working Draft of Web NFC API. Near Field Communication (NFC) is an international standard (ISO/IEC 18092) that specifies an interface and protocol for simple wireless interconnection of closely coupled devices operating at 13.56 MHz. NFC enables wireless communication between two devices at close proximity, usually less than a few centimeters, according to three groups of scenarios; holding a device close to a wireless tag to exchange some digital information or data, holding two devices close to each other in order to exchange some information or data between them, making payments by holding mobile phones close to point of sales terminals instead of swiping smart cards. Learn more about the Ubiquitous Web Applications Activity.