Flexible Query Answering with the powerset-AI Operator and Star-Based Ranking

  • Lena Wiese
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10333)


Query generalization is one option to implement flexible query answering. In this paper, we introduce a generalization operator (called powerset-AI) that extends conventional Anti-Instantiation (AI). We analyze structural modifications imposed by the generalization to obtain syntactic similarity measures (based on the star feature) that rank generalized queries with regard to their closeness to the original query.


Generalization Operator Predicate Symbol Jaccard Index Conjunctive Query Original Query 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.Institute of Computer ScienceUniversity of GöttingenGöttingenGermany

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