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Holistic and Compact Selectivity Estimation for Hybrid Queries over RDF Graphs
[chapter]
2014
Lecture Notes in Computer Science
Many RDF descriptions today are text-rich: besides structured data they also feature much unstructured text. Text-rich RDF data is frequently queried via predicates matching structured data, combined with string predicates for textual constraints (hybrid queries). Evaluating hybrid queries efficiently requires means for selectivity estimation. Previous works on selectivity estimation, however, suffer from inherent drawbacks, which are reflected in efficiency and effectiveness issues. We propose
doi:10.1007/978-3-319-11915-1_7
fatcat:ufz44u3z4zdedooeusolv2qthi