@inproceedings{Kaufmann/2007/Useful,
	title = {How Useful are Natural Language Interfaces to the Semantic Web for Casual End-users?},
	address = {Berlin, Heidelberg},
	author = {Esther Kaufmann and Abraham Bernstein},
	booktitle = {Proceedings of the 6th International Semantic Web Conference and 2nd Asian Semantic Web Conference (ISWC/ASWC2007), Busan, South Korea},
	crossref = {http://data.semanticweb.org/conference/iswc-aswc/2007/proceedings},
	editor = {Karl Aberer and Key-Sun Choi and Natasha Noy and Dean Allemang and Kyung-Il Lee and Lyndon J B Nixon and Jennifer Golbeck and Peter Mika and Diana Maynard and Guus Schreiber and Philippe Cudré-Mauroux},
	month = {November},
	pages = {281-294},
	publisher = {Springer Verlag},
	series = {LNCS},
	url = {http://iswc2007.semanticweb.org/papers/281.pdf},
	volume = {4825},
	year = {2007},
	biburl = {http://www.bibsonomy.org/bibtex/2fe7ac4a6c225a91fbab806a92a51cb97/iswc2007},
	abstract = {Natural language interfaces offer end-users a familiar and convenient option for querying ontology-based knowledge bases. Several studies have shown that they can achieve high retrieval performance as well as domain independence. This paper focuses on usability and investigates if NLIs are useful from an end-user's point of view. To that end, we introduce four interfaces each allowing a different query language and present a usability study benchmarking these interfaces. The results of the study reveal a clear preference for full sentences as query language and confirm that NLIs are useful for querying Semantic Web data.},
	keywords = {2007 evaluation human-computer_interaction information_extraction interface iswc language natural natural_language_processing research_10 semantic semantic_web web }
}

@inproceedings{Kiefer/2007/Fundamentals,
	title = {The Fundamentals of iSPARQL - A Virtual Triple Approach For Similarity-Based Semantic Web Tasks},
	address = {Berlin, Heidelberg},
	author = {Christoph Kiefer and Abraham Bernstein and Markus Stocker},
	booktitle = {Proceedings of the 6th International Semantic Web Conference and 2nd Asian Semantic Web Conference (ISWC/ASWC2007), Busan, South Korea},
	crossref = {http://data.semanticweb.org/conference/iswc-aswc/2007/proceedings},
	editor = {Karl Aberer and Key-Sun Choi and Natasha Noy and Dean Allemang and Kyung-Il Lee and Lyndon J B Nixon and Jennifer Golbeck and Peter Mika and Diana Maynard and Guus Schreiber and Philippe Cudré-Mauroux},
	month = {November},
	pages = {295--308},
	publisher = {Springer Verlag},
	series = {LNCS},
	url = {http://iswc2007.semanticweb.org/papers/295.pdf},
	volume = {4825},
	year = {2007},
	biburl = {http://www.bibsonomy.org/bibtex/25af761051f5ee7543ac1606fbd91ea96/iswc2007},
	abstract = {This research explores three SPARQL-based techniques to solve Semantic Web tasks that often require similarity measures, such as semantic data integration, ontology mapping, and Semantic Web service matchmaking. Our aim is to see how far it is possible to integrate customized similarity functions (CSF) into SPARQL to achieve good results for these tasks. Our first approach exploits virtual triples calling property functions to establish virtual relations among resources under comparison; the second approach uses extension functions to filter out resources that do not meet the requested similarity criteria; finally, our third technique applies new solution modifiers to post-process a SPARQL solution sequence. The semantics of the three approaches are formally elaborated and discussed. We close the paper with a demonstration of the usefulness of our iSPARQL framework in the context of a data integration and an ontology mapping experiment.},
	keywords = {2007 approach fundamentals isparql iswc research_03 semantic task triple virtual web }
}