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Displaying 1-11 out of 11 total
From Web Intelligence to Knowledge Co-Creation: A Platform for Analyzing and Supporting Stakeholder Communication
Found in: IEEE Internet Computing
By Arno Scharl,Alexander Hubmann-Haidvogel,Marta Sabou,Albert Weichselbraun,Heinz-Peter Lang
Issue Date:September 2013
pp. 21-29
Organizations require tools that can assess their online reputations as well as the impact of their marketing and public outreach activities. The Media Watch on Climate Change is a Web intelligence and online collaboration platform that addresses this requ...
 
Extracting and Grounding Contextualized Sentiment Lexicons
Found in: IEEE Intelligent Systems
By Albert Weichselbraun,Stefan Gindl,Arno Scharl
Issue Date:March 2013
pp. 39-46
A context-aware approach based on machine learning and lexical analysis identifies ambiguous terms and stores them in contextualized sentiment lexicons, which ground the terms to concepts corresponding to their polarity.
 
Media Watch on Climate Change -- Visual Analytics for Aggregating and Managing Environmental Knowledge from Online Sources
Found in: 2013 46th Hawaii International Conference on System Sciences (HICSS)
By Arno Scharl,Alexander Hubmann-Haidvogel,Albert Weichselbraun,Heinz-Peter Lang,Marta Sabou
Issue Date:January 2013
pp. 955-964
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 use...
   
Augmenting Lightweight Domain Ontologies with Social Evidence Sources
Found in: Database and Expert Systems Applications, International Workshop on
By Albert Weichselbraun, Gerhard Wohlgenannt, Arno Scharl
Issue Date:September 2010
pp. 193-197
Recent research shows the potential of utilizing data collected through Web 2.0 applications to capture changes in a domain's terminology. This paper presents an approach to augment corpus-based ontology learning by considering terms from collaborative tag...
 
An Ontology-Based Architecture for Tracking Information across Interactive Electronic Environments
Found in: Hawaii International Conference on System Sciences
By Arno Scharl, Albert Weichselbraun
Issue Date:January 2006
pp. 160b
This paper presents technical foundation, roadmap and initial results of the IDIOM project (Information Diffusion across Interactive Online Media). Information spreads rapidly across Web sites, Web logs and online forums. IDIOM tracks this process and comp...
   
Applying Optimal Stopping Theory to Improve the Performance of Ontology Refinement Methods
Found in: Hawaii International Conference on System Sciences
By Albert Weichselbraun, Gerhard Wohlgenannt, Arno Scharl
Issue Date:January 2011
pp. 1-10
Recent research shows the potential of utilizing data collected through Web 2.0 applications to capture domain evolution. Relying on external data sources, however, often introduces delays due to the time spent retrieving data from these sources. The metho...
   
Integrating Structural Data into Methods for Labeling Relations in Domain Ontologies
Found in: Database and Expert Systems Applications, International Workshop on
By Gerhard Wohlgenannt, Albert Weichselbraun, Arno Scharl
Issue Date:September 2009
pp. 94-98
This paper presents a method for integrating DBpedia data into an ontology learning system that automatically suggests labels for relations in domain ontologies based on large corpora of unstructured text. The method extracts and aggregates verb vectors fo...
 
Capturing and Classifying Ontology Evolution in News Media Archives
Found in: Database and Expert Systems Applications, International Workshop on
By Albert Weichselbraun, Arno Scharl, Wei Liu
Issue Date:September 2008
pp. 197-201
Ontology evolution is an intrinsic phenomenon of any knowledge-intensive system, which can be addressed either implicitly or explicitly. This paper describes an approach to capture and visualize implicit data-driven ontology evolution using ontologies semi...
 
Extraction and interactive exploration of knowledge from aggregated news and social media content
Found in: Proceedings of the 4th ACM SIGCHI symposium on Engineering interactive computing systems (EICS '12)
By Albert Weichselbraun, Alexander Hubmann-Haidvogel, Arno Scharl, Gerhard Wohlgenannt, Heinz-Peter Lang, Marta Sabou
Issue Date:June 2012
pp. 163-168
The webLyzard media monitoring and Web intelligence platform (www.webLyzard.com) 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 captur...
     
Using games with a purpose and bootstrapping to create domain-specific sentiment lexicons
Found in: Proceedings of the 20th ACM international conference on Information and knowledge management (CIKM '11)
By Albert Weichselbraun, Arno Scharl, Stefan Gindl
Issue Date:October 2011
pp. 1053-1060
Sentiment detection analyzes the positive or negative polarity of text. The field has received considerable attention in recent years, since it plays an important role in providing means to assess user opinions regarding an organization's products, service...
     
Annotating and visualizing location data in geospatial web applications
Found in: Proceedings of the first international workshop on Location and the web (LOCWEB '08)
By Albert Weichselbraun, Arno Scharl, Hermann Stern
Issue Date:April 2008
pp. 65-68
This paper presents the IDIOM Media Watch on Climate Change (www.ecoresearch.net/climate), a prototypical implementation of an environmental portal that emphasizes the importance of location data for advanced Web applications. The introductory section outl...
     
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