WebID

Abstract: WeBid is a prototype web-based framework for supporting early supplier involvement in new product development on the Internet It provides a suite of tools for establishing and managing the customer-supplier relationships in new product development pro cess Through WeBid, this paper discusses the issues related to the development and implementation of web applications in product de sign and manufacture The typical 3-tier architecture is explained to show how the main WeBid components work together to achieve the intended functionality A number of Java features are discussed for their suitability for implementing and deploying particular application components Various options for the connection and deployment of the remote databases are compared in terms of their strengths and limitations The paper provides some useful guidelines for those who are interested in developing and applying web applications in prod uct design and manufacture in a supply chain or extended enterprise environment

Abstract: Schema.org is one of the main drivers for the adoption of Semantic Web principles by a broad number of organizations and individuals for real business needs. GoodRelations is a well-established conceptual model for representing e-commerce information, one of the few widely used OWL DL ontologies, and since 2012 the official e-commerce model of schema.org. In this tutorial, we will 1 give a comprehensive overview and hands-on training on the advanced conceptual structures of schema.org for e-commerce, including patterns for ownership and demand, 2 present the full tool chain for producing and consuming respective data, 3 explain the long-term vision of Linked Open Commerce, and 4 discuss advanced topics, like access control, identity and authentication e.g. with WebID; micropayment services, and data management issues from the publisher and consumer perspective. We will also cover research opportunities resulting from the growing adoption and the respective amount of data in RDFa, Microdata, and JSON-LD syntaxes.

Abstract: With the proliferation of WiFi-enabled devices, people expect to be able to use them everywhere, be it at work, while commuting, or when visiting friends. In the latter case, home owners are confronted with the burden of controlling the access to their WiFi router, and usually resort to simply sharing the password. Although convenient, this solution breaches basic security principles, and puts the burden on the friends who have to enter the password in each and every of their devices. The use of social networks, specifying the trust relations between people and devices, provides for a more secure and more friendly authentication mechanism. In this paper, we progress the state-of-the-art by abandoning the centralized solution to embed social networks in WiFi authen-tication; we introduce EAP-SocTLS, a decentralized approach for authentication and authorization of WiFi access points and other devices, exploiting the embedded trust relations. In particular, we address the (quadratic) search complexity when indirect trust relations, like the smartphone of a friend's kid, are involved. We show that the simple heuristic of limiting the search to friends and devices in physical proximity makes for a scalable solution. Our prototype implementation, which is based on WebID and EAP-TLS, uses WiFi probe requests to determine the pool of neighboring devices and was shown to reduce the search time from 1 minute for the naive policy down to 11 seconds in the case of granting access over an indirect friend.

Abstract: WebID as an extensible and distributed identification approach enables users to globally authenticate themselves, connect to each other and manage their identity data at a self-defined place. Identity data stored in WebID profile documents can be protected from unauthorized access using appropriate access control methods. While existing methods are primarily about securing resources, they lack providing adequate mechanisms for controlling access to specific data within profiles. This paper presents our approach to create customized views on profiles in WebID-based distributed social networks. We introduce fine-grained personalized filters based on SPARQL templates and demonstrate their integration into an existing identity management platform.