Querying Semantic Web Data Cubes
نویسندگان
چکیده
We address the problem of querying data cubes for Online Analytical Processing (OLAP) analysis, directly on the Semantic Web (SW). We rst introduce CQL, a simple algebra for querying data cubes at a conceptual level. Taking advantage of QB4OLAP metadata, we automatically translate CQL queries into SPARQL ones, and propose query optimization strategies that adapt, to the particular OLAP setting, general-purpose techniques. A web application allows exploring and querying OLAP cubes on the SW, using the machinery presented here.
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