Search Results for author: Matthias Niewerth

Found 3 papers, 2 papers with code

Containment of Simple Regular Path Queries

no code implementations9 Mar 2020 Diego Figueira, Adwait Godbole, S. Krishna, Wim Martens, Matthias Niewerth, Tina Trautner

Testing containment of queries is a fundamental reasoning task in knowledge representation.

Constant-Delay Enumeration for Nondeterministic Document Spanners

1 code implementation5 Mar 2020 Antoine Amarilli, Pierre Bourhis, Stefan Mengel, Matthias Niewerth

We refute this and show that, given a nondeterministic sequential VA and an input document, we can enumerate the mappings of the VA on the document with the following bounds: the preprocessing is linear in the document size and polynomial in the size of the VA, and the delay is independent of the document and polynomial in the size of the VA.

Constant-Delay Enumeration for Nondeterministic Document Spanners

1 code implementation24 Jul 2018 Antoine Amarilli, Pierre Bourhis, Stefan Mengel, Matthias Niewerth

We refute this and show that, given a nondeterministic sequential VA and an input document, we can enumerate the mappings of the VA on the document with the following bounds: the preprocessing is linear in the document size and polynomial in the size of the VA, and the delay is independent of the document and polynomial in the size of the VA.

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