Hybrid Graph Visualizations With ChordLink: Algorithms, Experiments, and Applications

Angori, Lorenzo; Didimo, Walter; Montecchiani, Fabrizio; Pagliuca, Daniele; Tappini, Alessandra

doi:10.1109/tvcg.2020.3016055

Cited by 14 publications

(26 citation statements)

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“…Angori et al [9] introduce the ChordLink model. Similarly to NodeTrix, this model is designed to work in a system where the user can visually identify and select clusters on a node-link diagram; differently from NodeTrix, the selected cluster regions are represented as chord diagrams.…”

Section: Related Workmentioning

confidence: 99%

“…-ChordLink (CL). This model has been introduced in [9,10]. Nodes outside clusters and inter-cluster edges are drawn as in the NodeLink model.…”

Section: Visualization Modelsmentioning

confidence: 99%

“…1(c)). After the introduction of NodeTrix, hybrid visualizations have become an emerging topic in graph drawing and network visualization, and inspired an array of both theoretical and application results (see, e.g., [7,8,9,11,14,22,23,24,33,39,41,59]).…”

Section: Introductionmentioning

confidence: 99%

“…To investigate these questions, we designed a user study that compares three hybrid visualization models and the classical node-link model. Namely, we considered two hybrid models that are designed to work on similar types of networks: the aforementioned NodeTrix model [35] and the ChordLink model [9], which represents clusters as chord diagrams instead of adjacency matrices (Fig. 1(b)).…”

Section: Introductionmentioning

confidence: 99%

“…To the best of our knowledge, our study is the first that addresses research question RQ1, and that considers RQ2 for hybrid visualizations that adopt different styles to represent clusters. Our work is also motivated by open questions from [9,41], namely: [9] suggests to perform a user study to compare ChordLink and other hybrid visualizations; [41] asks what is the impact of reducing crossings between inter-cluster edges at the expenses of independent row/column orderings in NodeTrix. The results of our study provide some hints about the usefulness of hybrid visualizations in the execution of topology-based tasks with respect to node-link diagrams.…”

Section: Introductionmentioning

confidence: 99%

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A User Study on Hybrid Graph Visualizations

Giacomo¹,

Didimo²,

Fabrizio³

et al. 2021

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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 node-link diagrams and matrix-based representations to support the analysis of real-world networks that are globally sparse but locally dense. That idea inspired a series of works, proposing variants or alternatives to NodeTrix. We present a user study that compares the classical node-link model and three hybrid visualization models designed to work on the same types of networks. The results of our study provide interesting indications about advantages/drawbacks of the considered models on performing classical tasks of analysis. At the same time, our experiment has some limitations and opens up to further research on the subject.

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Section: Related Workmentioning

confidence: 99%

“…-ChordLink (CL). This model has been introduced in [9,10]. Nodes outside clusters and inter-cluster edges are drawn as in the NodeLink model.…”

Section: Visualization Modelsmentioning

confidence: 99%