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arXiv · 1905.12990

Data Complexity and Rewritability of Ontology-Mediated Queries in Metric Temporal Logic under the Event-Based Semantics (Full Version)

Vladislav Ryzhikov·Przemyslaw Andrzej Walega·Michael Zakharyaschev
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Abstract

We investigate the data complexity of answering queries mediated by metric temporal logic ontologies under the event-based semantics assuming that data instances are finite timed words timestamped with binary fractions. We identify classes of ontology-mediated queries answering which can be done in AC0, NC1, L, NL, P, and coNP for data complexity, provide their rewritings to first-order logic and its extensions with primitive recursion, transitive closure or datalog, and establish lower complexity bounds.

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Vladislav Ryzhikov, Przemyslaw Andrzej Walega, Michael Zakharyaschev. 2019-05-30. Data Complexity and Rewritability of Ontology-Mediated Queries in Metric Temporal Logic under the Event-Based Semantics (Full Version). https://arxiv.org/abs/1905.12990

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