Approximately counting answers to conjunctive queries with disequalities and negations

<p>We study the complexity of approximating the number of answers to a small query 𝜑 in a large database D. We establish an exhaustive classification into tractable and intractable cases if 𝜑 is a conjunctive query possibly including disequalities and negations:</p> <br> <p>•...

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मुख्य लेखकों: Focke, J, Goldberg, L, Roth, M, Zivny, S
स्वरूप: Journal article
भाषा:English
प्रकाशित: Association for Computing Machinery 2024

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