11 citations · 13 across the 4 of their papers we have counts for
7 papers · 1 filter
Rewriting Ontology-Mediated Property Graph Queries into GQL
Bianca Löhnert, Nikolaus Augsten, Cem Okulmus +1
Ontology-based data access is intended for graph data, but practical support remains limited to SQL-like languages lacking the navigational and path-matching features fundamental t…
Towards Practicable Algorithms for Rewriting Graph Queries beyond DL-Lite
Bianca Löhnert, Nikolaus Augsten, Cem Okulmus +1
Despite the many advantages that ontology-based data access (OBDA) has brought to a range of application domains, state-of-the-art OBDA systems still do not support popular graph d…
KOIOS: Top-k Semantic Overlap Set Search
Pranay Mundra, Jianhao Zhang, Fatemeh Nargesian +1
We study the top-k set similarity search problem using semantic overlap. While vanilla overlap requires exact matches between set elements, semantic overlap allows elements that ar…
FINEX: A Fast Index for Exact & Flexible Density-Based Clustering (Extended Version with Proofs)*
Konstantin Emil Thiel, Daniel Kocher, Nikolaus Augsten +3
Density-based clustering aims to find groups of similar objects (i.e., clusters) in a given dataset. Applications include, e.g., process mining and anomaly detection. It comes with…
JEDI: These aren't the JSON documents you're looking for... (Extended Version*)
Thomas Hütter, Nikolaus Augsten, Christoph M. Kirsch +2
The JavaScript Object Notation (JSON) is a popular data format used in document stores to natively support semi-structured data. In this paper, we address the problem of JSON simil…
Statistics of Knowledge Graphs Based On The Conceptual Schema
Iztok Savnik, Kiyoshi Nitta, Riste Skrekovski +1
In this paper, we propose a new approach for the computation of the statistics of knowledge graphs. We introduce a schema graph that represents the main framework for the computati…