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cs.DB2020
Constant-Delay Enumeration for Nondeterministic Document Spanners
Antoine Amarilli, Pierre Bourhis, Stefan Mengel +1
We consider the information extraction framework known as document spanners, and study the problem of efficiently computing the results of the extraction from an input document, wh…
cs.DB2012★ 6 cited
Queries with Guarded Negation (full version)
Vince Barany, Balder ten Cate, Martin Otto
A well-established and fundamental insight in database theory is that negation (also known as complementation) tends to make queries difficult to process and difficult to reason ab…