Web application developers face increasing difficulties due to wide variations in device capabilities, in the details of the standards they support, the need to support assistive technologies for accessibility, the demand for richer user interfaces, the suites of programming languages and libraries, and the need to contain costs and meet challenging schedules during the development and maintenance of applications. Research work on model-based design of context-sensitive user interfaces has sought to address the challenge of reducing the costs for developing and maintaining multi-target user interfaces through a layered architecture that separates out different concerns. Workshop participants will collectively help to identify opportunities and challenges for new open standards in the area, particularly concerning the semantics and syntaxes of task, abstract and concrete user interface models. In addition, workshop participants will have the opportunity to discuss the role of model-based approaches in relation to other standards, for instance, XForms, ANSI/CEA-2018 and MDA, and the relationship to work on standards for Web delivery including HTML5 and browser scripting APIs.

Augmented reality (AR) is a long standing topic in its own right but it has not been developed on the Web platform. As mobile devices become more powerful and feature-rich, the workshop will explore the possible convergence of AR and the Web. The objective of this Workshop is to provide a single forum for researchers and technologists to discuss the state of the art for AR on the Web, particularly the mobile platform, and what role standardization should play for Open Augmented Reality.

The goal of the workshop is to understand the limitations of the current W3C language model in order to develop a more comprehensive model. We plan to collect and analyze use cases and prioritize requirements that ultimately will be used to identify improvements to the W3C language model. Just as W3C developed SSML 1.1 to broaden the languages for which SSML is useful, this effort will result in improved support for language capabilities that are unsupported today.

The goal of the workshop is to gather feedback from the Web community on whether and, if yes, in which direction RDF should evolve. One of the main issues the Workshop should help deciding is whether it is timely for W3C to start a new RDF Working Group to define and standardize a next version of RDF.

As the Web advances toward becoming an application development platform that addresses needs previously met by native applications, work proceeds on APIs to access information that was previously not available to Web developers. The broad availability of possibly sensitive data collected through location sensors and other facilities in a Web browser is just one example of the broad new privacy challenges that the Web faces today. Earlier approaches to address privacy issues for the Web, especially through policy languages, have not seen broad implementation in current-generation Web browsers.

This workshop serves to investigate strategies toward better privacy protection on the Web that are effective and lead to benefits in the near term.