AAAI Publications, Thirtieth AAAI Conference on Artificial Intelligence

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Column-Oriented Datalog Materialization for Large Knowledge Graphs
Jacopo Urbani, Ceriel Jacobs, Markus Krötzsch

Last modified: 2016-02-21


The evaluation of Datalog rules over large Knowledge Graphs (KGs) is essential for many applications. In this paper, we present a new method of materializing Datalog inferences, which combines a column-based memory layout with novel optimization methods that avoid redundant inferences at runtime. The pro-active caching of certain subqueries further increases efficiency. Our empirical evaluation shows that this approach can often match or even surpass the performance of state-of-the-art systems, especially under restricted resources.

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