A survey on semantic schema discovery

K Kellou-Menouer, N Kardoulakis, G Troullinou… - The VLDB Journal, 2022 - Springer
More and more weakly structured, and irregular data sources are becoming available every
day. The schema of these sources is useful for a number of tasks, such as query answering …

Formal concept analysis: from knowledge discovery to knowledge processing

S Ferré, M Huchard, M Kaytoue, SO Kuznetsov… - A Guided Tour of …, 2020 - Springer
In this chapter, we introduce Formal Concept Analysis (FCA) and some of its extensions.
FCA is a formalism based on lattice theory aimed at data analysis and knowledge …

A 'Best-of-Breed'approach for designing a fast algorithm for computing fixpoints of Galois Connections

S Andrews - Information Sciences, 2015 - Elsevier
Abstract The fixpoints of Galois Connections form patterns in binary relational data, such as
object-attribute relations, that are important in a number of data analysis fields, including …

Modelling dynamics in semantic web knowledge graphs with formal concept analysis

L González, A Hogan - Proceedings of the 2018 world wide web …, 2018 - dl.acm.org
In this paper, we propose a novel data-driven schema for large-scale heterogeneous
knowledge graphs inspired by Formal Concept Analysis (FCA). We first extract the sets of …

Similarity reasoning in formal concept analysis: from one-to many-valued contexts

A Formica - Knowledge and Information Systems, 2019 - Springer
In this paper, concept similarity in formal concept analysis (FCA) with many-valued contexts
is addressed. In particular, this work focuses on FCA many-valued contexts where attribute …

[HTML][HTML] Rhizomer: Interactive semantic knowledge graphs exploration

R García, JM López-Gil, R Gil - SoftwareX, 2022 - Elsevier
Rhizomer helps researchers and practitioners explore knowledge graphs available as
Semantic Web data by performing the three data analysis tasks: overview, zoom and filter …

[PDF][PDF] Ld-vowl: Extracting and visualizing schema information for linked data

M Weise, S Lohmann, F Haag - 2nd international workshop on …, 2016 - diva-portal.org
Users currently face the problem that schema information for Linked Data is often not
available. If it is available, it tends to be incomplete or does not adequately represent the …

Hint: Hybrid and incremental type discovery for large RDF data sources

N Kardoulakis, K Kellou-Menouer… - Proceedings of the 33rd …, 2021 - dl.acm.org
The rapid explosion of linked data has resulted into many weakly structured and incomplete
data sources, where typing information might be missing. On the other hand, type …

[PDF][PDF] Similar Structures inside RDF-Graphs.

A Alzogbi, G Lausen - LDOW, 2013 - ceur-ws.org
ABSTRACT RDF is the common data model to publish structured data on the Web. RDF
data sets are given as subject-predicateobject triples and typically are represented as …

Extraction and visualization of tbox information from sparql endpoints

M Weise, S Lohmann, F Haag - … EKAW 2016, Bologna, Italy, November 19 …, 2016 - Springer
The growing amount of data being published as Linked Data has a huge potential, but the
usage of this data is still cumbersome, especially for non-technical users. Visualizations can …