Honey, I shrunk the XQuery!: an XML algebra optimization approach
Proceedings of the 4th international workshop on Web information and data management
DBPL '01 Revised Papers from the 8th International Workshop on Database Programming Languages
The complexity of XPath query evaluation and XML typing
Journal of the ACM (JACM)
Efficient algorithms for processing XPath queries
ACM Transactions on Database Systems (TODS)
Embedding SPARQL into XQuery/XSLT
Proceedings of the 2008 ACM symposium on Applied computing
Axiomatizing the Logical Core of XPath 2.0
Theory of Computing Systems
The complexity of query containment in expressive fragments of XPath 2.0
Journal of the ACM (JACM)
From XQuery to relational logics
ACM Transactions on Database Systems (TODS)
Improve efficiency of mapping data between XML and RDF with XSPARQL
RR'11 Proceedings of the 5th international conference on Web reasoning and rule systems
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The Semantic Web provides a wealth of open data in RDF format. XML remains a widespread format for data exchange. When combining data of these two formats several problems arise due to representational incompatibilities. The query language XSPARQL, which is built by combining XQuery and SPARQL, addresses some of these problems. However the evaluation of complex XSPARQL queries by a naive implementation shows slow response times. Establishing an integrated formal model for a core fragment of XSPARQL will allow us to improve performance of query answering by defining query equivalences.