Tractability beyond β-acyclicity for conjunctive queries with negation

Tractability beyond β-acyclicity for conjunctive queries with negation

Numerous fundamental database and reasoning problems are known to be NP-hard in general but tractable on instances where the underlying hypergraph structure is β-acyclic. Despite the importance of many of these problems, there has been little success in generalizing these results beyond acyclicity....

書誌詳細
第一著者:	Lanzinger, M
フォーマット:	Conference item
言語:	English
出版事項:	Association for Computing Machinery 2021

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