Entwicklung eines mobilen Social Semantic Web Clients

Diese Arbeit befasst sich mit der Konzeption und der Entwicklung eines mobilen Social Semantic Web Clients. Er ist auf internetf\u7fahigen Handys, Internettablets, Netbooks und weiteren Ger\u7faten mit dem Android-System einsetzbar. Der Client ermöglicht es, das Onlineprofil des Benutzers zu importieren und zu bearbeiten. Er importiert ebenfalls die darin referenzierten Profile von Bekannten von den verschiedenen verteilten Servern. Außerdem beherrscht der Client eine Authentifizierung mittels FOAF+SSL, um dasAbrufen von privaten Daten zu ermöglichen. Diese Arbeit befasst sich damit, die genannte Funktionalität durch eine Middleware bereitzustellen. Dies bietet die Möglichkeit darauf aufbauende Anwendungen in Zukunft zu entwickeln. Im Rahmen dieser Arbeit wird zusätzlich eine auf diese Middleware aufbauende Benutzeroberfäche und eine Integration der Kontakte in das Android-Adressbuch entwickelt

Xodx – Konzeption und Implementierung eines Distributed Semantic Social Network Knotens

Betrieb eines Knotens in einem Distributed Semantic Social Network. Der Knoten umfasst Funktionen zur Erstellung einer persönlichen Beschreibung, zur Verwaltung von Freundschaftsbeziehungen und zur Kommunikation mit anderen Teilnehmern des Netzwerks. Die entstandene Implementierung ist bereits auf leistungsschwacher, kostengünstiger und energieeffizienter Hardware praktisch im Einsatz. Zusätzlich wurden ihre Skalierungseigenschaften in einem Testaufbau mit mehreren Knoten untersucht

OntoWiki 1.0: 10 years of development - what's new in OntoWiki

In this demonstration (with supportive poster) we present the semantic data wiki OntoWiki, which was released in version 1.0 just recently. We focus on the changes introduced to the tool in the latest release and showcase the generic data wiki, improvements we made with regard to the documentation as well as three success stories where OntoWiki was adapted and deployed

Second International Workshop on Linked Data-driven Resilience Research 2023

In the face of continuously changing contextual conditions and ubiquitous disruptive crisis events, the concept of resilience refers to some of the most urgent, challenging, and interesting issues of nowadays society. Economic value networks, technical infrastructures, health systems, and social textures alike need to unfold capacities to withstand, adapt, recover, or even refine and transform themselves to stay ahead of changes

RDF Editing on the Web

ABSTRACT While several tools for simplifying the task of visualizing (SPARQL accessible) RDF data on the Web are available today, there is a lack of corresponding tools for exploiting standard HTML forms directly for RDF editing. The few related existing systems roughly fall in the categories of (a) applications that are not aimed at being reused as components, (b) form generators, which automatically create forms from a given schema -possibly derived from instance data -or (c) form template processors which create forms from a manually created specification. Furthermore, these systems usually come with their own widget library, which can only be extended by wrapping existing widgets. In this paper, we present the AngularJS-based Rdf Edit eXtension (REX) system, which facilitates the enhancement of standard HTML forms as well as many existing AngularJS widgets with RDF editing support by means of a set of HTML attributes. We demonstrate our system though the realization of several usage scenarios

Publish and subscribe for RDF in enterprise value networks

Sharing information securely between business partners and managing large supply chains effciently will be a crucial competitive advantage for enterprises in the near future. In this paper, we present a concept that allows for building value networks between business partners in a distributed manner. Companies are able to publish Linked Data which participants of the network can clone and subscribe to. Subscribers get noticed as soon as new information becomes available. This provides a technical infrastructure for business communication acts such as supply chain communication or master data management. In addition to the conceptual analysis, we provide an implementation enabling companies to create such dynamic semantic value networks

Structured feedback: a distributed protocol for feedback and patches on the Web of Data

The World Wide Web is an infrastructure to publish and retrieve information through web resources. It evolved from a static Web 1.0 to a multimodal and interactive communication and information space which is used to collaboratively contribute and discuss web resources, which is better known as Web 2.0. The evolution into a Semantic Web (Web 3.0) proceeds. One of its remarkable advantages is the decentralized and interlinked data composition. Hence, in contrast to its data distribution, workflows and technologies for decentralized collaborative contribution are missing. In this paper we propose the Structured Feedback protocol as an interactive addition to the Web of Data. It offers support for users to contribute to the evolution of web resources, by providing structured data artifacts as patches for web resources, as well as simple plain text comments. Based on this approach it enables crowd-supported quality assessment and web data cleansing processes in an ad-hoc fashion most web users are familiar with

Collaborative Work on Ontologies - A Report

Supply chains are vulnerable and inherently complex processes. In-creasing the resilience of supply chains is realised, if the stakeholders involved have agreed on a clear language. Only this enables a comprehensive, unambiguous and fast exchange of information. Ontologies serve as a powerful formal tool to realize an appropriate communication framework. They are designed to make communication and information exchange between stakeholders and machines unambiguous and thus efficient. This paper addresses the challenges and solutions associated with the fact that ontologies need to reflect agreed definitions of a domain, as we face them in the SC3 and CoyPu projects