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arXiv · 2301.08848

Diversity of Answers to Conjunctive Queries

Timo Camillo Merkl·Reinhard Pichler·Sebastian Skritek
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Abstract

Enumeration problems aim at outputting, without repetition, the set of solutions to a given problem instance. However, outputting the entire solution set may be prohibitively expensive if it is too big. In this case, outputting a small, sufficiently diverse subset of the solutions would be preferable. This leads to the Diverse-version of the original enumeration problem, where the goal is to achieve a certain level d of diversity by selecting k solutions. In this paper, we look at the Diverse-version of the query answering problem for Conjunctive Queries and extensions thereof. That is, we study the problem if it is possible to achieve a certain level d of diversity by selecting k answers to the given query and, in the positive case, to actually compute such k answers.

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Timo Camillo Merkl, Reinhard Pichler, Sebastian Skritek. 2023-01-21. Diversity of Answers to Conjunctive Queries. https://doi.org/10.46298/lmcs-21(1%3A9)2025

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