Federated database systems for managing distributed, heterogeneous, and autonomous databases
ACM Computing Surveys (CSUR) - Special issue on heterogeneous databases
The evolving mSpace platform: leveraging the semantic web on the trail of the memex
Proceedings of the sixteenth ACM conference on Hypertext and hypermedia
Proceedings of the 17th international conference on World Wide Web
Evaluating advanced search interfaces using established information-seeking models
Journal of the American Society for Information Science and Technology
COMM: designing a well-founded multimedia ontology for the web
ISWC'07/ASWC'07 Proceedings of the 6th international The semantic web and 2nd Asian conference on Asian semantic web conference
YARS2: a federated repository for querying graph structured data from the web
ISWC'07/ASWC'07 Proceedings of the 6th international The semantic web and 2nd Asian conference on Asian semantic web conference
Querying distributed RDF data sources with SPARQL
ESWC'08 Proceedings of the 5th European semantic web conference on The semantic web: research and applications
/facet: a browser for heterogeneous semantic web repositories
ISWC'06 Proceedings of the 5th international conference on The Semantic Web
Proceedings of the 12th International Conference on Information Integration and Web-based Applications & Services
Creating knowledge out of interlinked data: making the web a data washing machine
Proceedings of the International Conference on Web Intelligence, Mining and Semantics
Hybrid query processing for personalized information retrieval on the Semantic Web
Knowledge-Based Systems
Automatic classification of building types in 3D city models
Geoinformatica
A core ontology on events for representing occurrences in the real world
Multimedia Tools and Applications
Semantics visualization for fostering search result comprehension
ESWC'12 Proceedings of the 9th international conference on The Semantic Web: research and applications
Semantic technologies for multimedia content: foundations and applications
Proceedings of the 21st ACM international conference on Multimedia
An analysis framework for ontology querying tools
Proceedings of the 9th International Conference on Semantic Systems
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SemaPlorer is an easy to use application that allows end users to interactively explore and visualize a very large, mixed-quality and semantically heterogeneous distributed semantic data set in real-time. Its purpose is to acquaint oneself about a city, touristic area, or other area a user is interested in. By visualizing the data using a map, media, and different context views, SemaPlorer advances beyond simple storage and retrieval of large numbers of triples, as the interaction with the large data set is driven by the user. SemaPlorer leverages different semantic data sources such as DBpedia, GeoNames, WordNet, and personal FOAF files. These make a significant portion of the data provided for the Billion Triple Challenge. SemaPlorer intriguingly connects with a large Flickr data set converted to RDF. The storage infrastructure bases on Amazon's Elastic Computing Cloud (EC2) and Simple Storage Service. We apply NetworkedGraphs as a conceptual layer on top of EC2, realizing a large, federated data infrastructure for semantically heterogeneous data sources from within and outside of the cloud. Therefore, the application is scalable with respect to the amount of distributed components working together as well as the number of triples managed overall. Hence, SemaPlorer is flexible enough to leverage for exploration of almost arbitrary additional data sources that might be added in the future. We conducted a formative evaluation of the SemaPlorer application with 20 test subjects. The results of this evaluation are analyzed and their implication to future work discussed. SemaPlorer won the first prize at the Billion Triple Challenge of the International Semantic Web Conference in Karlsruhe, 2008.