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TReView: Visualizing the European Union Transparency Register (Poster Abstract)

Authors Cristiano Bernardini , Davide Campanelli , Walter Didimo , Luca Grilli , Giuseppe Liotta , Benedetto Ponti

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Subject Classification

ACM Subject Classification
  • Mathematics of computing → Graph algorithms
  • Mathematics of computing → Graph theory
  • Theory of computation → Graph algorithms analysis
Keywords
  • Transparency Registry
  • European Union
  • Graph Visualization
  • Interactive Visualization
  • Visual Analytics

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Abstract

We present TReView, the first visual analytics system for the exploration of the European Union (EU) Transparency Register, a large repository that aims to enhance transparency around lobbying activities within the EU, by enabling public oversight of meetings between lobbyists and EU officials.

Cite As Get BibTex

Cristiano Bernardini, Davide Campanelli, Walter Didimo, Luca Grilli, Giuseppe Liotta, and Benedetto Ponti. TReView: Visualizing the European Union Transparency Register (Poster Abstract). In 33rd International Symposium on Graph Drawing and Network Visualization (GD 2025). Leibniz International Proceedings in Informatics (LIPIcs), Volume 357, pp. 45:1-45:5, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2025) https://doi.org/10.4230/LIPIcs.GD.2025.45

Author Details

Cristiano Bernardini
  • University of Perugia, Italy
Davide Campanelli
  • University of Perugia, Italy
Walter Didimo
  • University of Perugia, Italy
Luca Grilli
  • University of Perugia, Italy
Giuseppe Liotta
  • University of Perugia, Italy
Benedetto Ponti
  • University of Perugia, Italy

Funding

  • Bernardini, Cristiano: MUR PRIN 2022JSLZW, Assessing Conflict of Interests.
  • Didimo, Walter: MUR PRIN P2022JSLZW, Assessing Conflict of Interests. MUR PRIN 2022TS4Y3N, EXPAND: scalable algorithms for EXPloratory Analyses of heterogeneous and dynamic Networked Data. MUR PON Proj. ARS01 00540, RASTA
  • Grilli, Luca: MUR PRIN P2022JSLZW, Assessing Conflict of Interest.
  • Liotta, Giuseppe: MUR PRIN 2022JSLZW, Assessing Conflict of Interests. MUR PRIN 2022TS4Y3N, EXPAND: scalable algorithms for EXPloratory Analyses of heterogeneous and dynamic Networked Data. MUR PON Proj. ARS01 00540, RASTA
  • Ponti, Benedetto: MUR PRIN 2022JSLZW, Assessing Conflict of Interests.

Acknowledgements

We are grateful to Francesco Annunziata for his help in collecting useful data.

Supplementary Materials

References

  1. Michael Bostock, Vadim Ogievetsky, and Jeffrey Heer. D³ Data-Driven Documents. IEEE Transactions on Visualization and Computer Graphics, 17:2301-2309, 2011. URL: https://doi.org/10.1109/TVCG.2011.185.
  2. Raj Chari. New perspectives on lobbying regulation and reform: two generations of research. Interest Groups & Advocacy, 13:381-395, 2024. Google Scholar
  3. Transparency International EU. EU Integrity Watch. https://www.integritywatch.eu/, 2025.
  4. Nuria Font and Ixchel Pérez-Durán. Legislative transparency in the European Parliament: Disclosing legislators' meetings with interest groups. JCMS, 61(2):379-396, 2023. Google Scholar
  5. Sofia Heikkonen. Transparency materialised: how registers can regulate access to documents? Cambridge University Press, 3(1), 2024. Google Scholar
  6. Joan R. Martin and Irene A. Galcerà. Lobbying in the EU: prospects and challenges of the mandatory transparency register. Front. Polit. Sci., 6, 2025. URL: https://doi.org/10.3389/fpos.2024.1508017.
  7. Silvia Miksch and Wolfgang Aigner. A matter of time: Applying a data-users-tasks design triangle to visual analytics of time-oriented data. Comput. Graph., 38:286-290, 2014. URL: https://doi.org/10.1016/J.CAG.2013.11.002.
  8. Corporare Europe Observatory and LobbyControl. LobbyFacts.eu. https://www.lobbyfacts.eu/, 2025.
  9. European Union. Trasparency register. https://transparency-register.europa.eu/, 2025.
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