Hybrid graph visualizations with ChordLink: algorithms, experiments, and applications

L Angori, W Didimo, F Montecchiani… - … on Visualization and …, 2020 - ieeexplore.ieee.org
Many real-world networks are globally sparse but locally dense. Typical examples are social
networks, biological networks, and information networks. This double structural nature …

Comparative study and evaluation of hybrid visualizations of graphs

E Di Giacomo, W Didimo, G Liotta… - … on Visualization and …, 2023 - ieeexplore.ieee.org
Hybrid visualizations combine different metaphors into a single network layout, in order to
help humans in finding the “right way” of displaying the different portions of the network …

ChordLink: A New Hybrid Visualization Model

L Angori, W Didimo, F Montecchiani, D Pagliuca… - … Symposium on Graph …, 2019 - Springer
Many real-world networks are globally sparse but locally dense. Typical examples are social
networks, biological networks, and information networks. This double structural nature …

[HTML][HTML] Parameterized complexity of graph planarity with restricted cyclic orders

G Liotta, I Rutter, A Tappini - Journal of Computer and System Sciences, 2023 - Elsevier
We study the complexity of testing whether a biconnected graph G=(V, E) is planar with the
constraint that some cyclic orders of the edges incident to its vertices are allowed while …

Parameterized complexity of graph planarity with restricted cyclic orders

G Liotta, I Rutter, A Tappini - … Workshop on Graph-Theoretic Concepts in …, 2022 - Springer
We study the complexity of testing whether a biconnected graph is planar with the additional
constraint that some cyclic orders of the edges incident to its vertices are allowed while …

Simultaneous FPQ-ordering and hybrid planarity testing

G Liotta, I Rutter, A Tappini - Theoretical Computer Science, 2021 - Elsevier
We introduce and study a constrained planarity testing problem, called 1-Fixed Constrained
Planarity, and prove that this problem can be solved in quadratic time for biconnected …

A user study on hybrid graph visualizations

E Di Giacomo, W Didimo, F Montecchiani… - … Symposium on Graph …, 2021 - Springer
Hybrid visualizations mix different metaphors in a single layout of a network. In particular, the
popular NodeTrix model, introduced by Henry, Fekete, and McGuffin in 2007, combines …

Graph planarity by replacing cliques with paths

P Angelini, P Eades, SH Hong, K Klein, S Kobourov… - Algorithms, 2020 - mdpi.com
This paper introduces and studies the following beyond-planarity problem, which we call h-
Clique2Path Planarity. Let G be a simple topological graph whose vertices are partitioned …

Graph planarity testing with hierarchical embedding constraints

G Liotta, I Rutter, A Tappini - arXiv preprint arXiv:1904.12596, 2019 - arxiv.org
Hierarchical embedding constraints define a set of allowed cyclic orders for the edges
incident to the vertices of a graph. These constraints are expressed in terms of FPQ-trees …