Alexander Hubmann-Haidvogel

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Visual techniques provide an intuitive way of making sense of the large amounts of microposts available from social media sources, particularly in the case of emerging topics of interest to a global audience, which often raise controversy among key stakeholders. Micropost streams are context-dependent and highly dynamic in nature. We describe a visual(More)
The advantages and positive effects of multiple coordinated views on search performance have been documented in several studies. This paper describes the implementation of multiple coordinated views within the Media Watch on Climate Change, a domain-specific news aggregation portal available at that combines a portfolio of(More)
This paper presents the Media Watch on Climate Change, a public Web portal that captures and aggregates large archives of digital content from multiple stakeholder groups. Each week it assesses the domain-specific relevance of millions of documents and user comments from news media, blogs, Web 2.0 platforms such as Facebook, Twitter and YouTube, the Web(More)
This paper introduces an interactive <i>news flow</i> visualization that reveals emerging topics in dynamic digital content archives. The presented approach combines several visual metaphors and can be easily adapted to present multi-source social media datasets. In the context of this work, we discuss various methods for improving visual interfaces for(More)
This paper presents the 'Media Watch on Climate Change', an interactive Web portal that combines a portfolio of semantic services with a visual interface based on tightly coupled views. The interface enables users to access a repository of environmental knowledge, built by crawling about 300,000 news media articles in weekly intervals. Tagging services(More)
The <i>webLyzard</i> media monitoring and Web intelligence platform ( presented in this paper is a generic tool for assessing the strategic positioning of an organization and the effectiveness of its communication strategies. The platform captures and aggregates large archives of digital content from multiple stakeholder groups. Each week(More)
This paper discusses the role of context information in building the next generation of human-centered information systems, and classifies the various aspects of contextualiza-tion with a special emphasis on the production and consumption of digital content. The real-time annotation of resources is a crucial element when moving from content aggregators(More)