Spec-QP: Speculative Query Planning for Joins over Knowledge Graphs
Madhulika Mohanty,
Maya Ramanath,
Mohamed Yahya
et al.
Abstract:Organisations store huge amounts of data from multiple heterogeneous sources in the form of Knowledge Graphs (KGs). One of the ways to query these KGs is to use SPARQL queries over a database engine. Since SPARQL follows exact match semantics, the queries may return too few or no results. Recent works have proposed query relaxation where the query engine judiciously replaces a query predicate with similar predicates using weighted relaxation rules mined from the KG. The space of possible relaxations is potenti… Show more
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