TY - GEN
T1 - FedX
T2 - 10th International Semantic Web Conference, ISWC 2011
AU - Schwarte, Andreas
AU - Haase, Peter
AU - Hose, Katja
AU - Schenkel, Ralf
AU - Schmidt, Michael
PY - 2011/11/2
Y1 - 2011/11/2
N2 - Motivated by the ongoing success of Linked Data and the growing amount of semantic data sources available on the Web, new challenges to query processing are emerging. Especially in distributed settings that require joining data provided by multiple sources, sophisticated optimization techniques are necessary for efficient query processing. We propose novel join processing and grouping techniques to minimize the number of remote requests, and develop an effective solution for source selection in the absence of preprocessed metadata. We present FedX, a practical framework that enables efficient SPARQL query processing on heterogeneous, virtually integrated Linked Data sources. In experiments, we demonstrate the practicability and efficiency of our framework on a set of real-world queries and data sources from the Linked Open Data cloud. With FedX we achieve a significant improvement in query performance over state-of-the-art federated query engines.
AB - Motivated by the ongoing success of Linked Data and the growing amount of semantic data sources available on the Web, new challenges to query processing are emerging. Especially in distributed settings that require joining data provided by multiple sources, sophisticated optimization techniques are necessary for efficient query processing. We propose novel join processing and grouping techniques to minimize the number of remote requests, and develop an effective solution for source selection in the absence of preprocessed metadata. We present FedX, a practical framework that enables efficient SPARQL query processing on heterogeneous, virtually integrated Linked Data sources. In experiments, we demonstrate the practicability and efficiency of our framework on a set of real-world queries and data sources from the Linked Open Data cloud. With FedX we achieve a significant improvement in query performance over state-of-the-art federated query engines.
UR - http://www.scopus.com/inward/record.url?scp=80055049544&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-25073-6_38
DO - 10.1007/978-3-642-25073-6_38
M3 - Article in proceeding
AN - SCOPUS:80055049544
SN - 9783642250729
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 601
EP - 616
BT - The Semantic Web, ISWC 2011 - 10th International Semantic Web Conference, Proceedings
Y2 - 23 October 2011 through 27 October 2011
ER -