SPACE: SPARQL Index for Efficient Autocompletion

Querying Linked Data means to pose queries on various data sources without information about the data and the schema of the data. This demo shows SPACE, a tool to support autocompletion for SPARQL queries. It takes as input SPARQL query logs and builds an index structure for efficient and fast computation of query suggestions. To demonstrate SPACE, we use available query logs from the USEWOD Data Challenge 2013.

[1]  Ansgar Scherp,et al.  LODatio: using a schema-level index to support users infinding relevant sources of linked data , 2013, K-CAP.

[2]  Giovanni Tummarello,et al.  Introducing RDF Graph Summary with Application to Assisted SPARQL Formulation , 2012, 2012 23rd International Workshop on Database and Expert Systems Applications.

[3]  Marios D. Dikaiakos,et al.  A Query Formulation Language for the Data Web , 2012, IEEE Transactions on Knowledge and Data Engineering.

[4]  Marcelo Arenas,et al.  Semantics and complexity of SPARQL , 2006, TODS.

[5]  Guntis Barzdins,et al.  ViziQuer: A Tool to Explore and Query SPARQL Endpoints , 2011, ESWC.