64 citations · 362 across the 43 of their papers we have counts for
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Minimally Factorizing the Provenance of Self-join Free Conjunctive Queries
Neha Makhija, Wolfgang Gatterbauer
We consider the problem of finding the minimal-size factorization of the provenance of self-join-free conjunctive queries, i.e., we want to find a formula that minimizes the number…
DomainNet: Homograph Detection for Data Lake Disambiguation
Aristotelis Leventidis, Laura Di Rocco, Wolfgang Gatterbauer +2
Modern data lakes are deeply heterogeneous in the vocabulary that is used to describe data. We study a problem of disambiguation in data lakes: how can we determine if a data value…
Beyond Equi-joins: Ranking, Enumeration and Factorization
Nikolaos Tziavelis, Wolfgang Gatterbauer, Mirek Riedewald
We study theta-joins in general and join predicates with conjunctions and disjunctions of inequalities in particular, focusing on ranked enumeration where the answers are returned…