Fedivertex: lemmy federation_with_blocks
A Fediverse (lemmy, federation_with_blocks graph) dataset of 779 nodes, 289,473 edges (62 snapshots merged), collected by Damie & Cyffers via weekly crawls over 6 months. Each record contains directed edges with signs (+ for federation, - for blocks) between instances. The dataset is notable for its directed graph with both positive (federation) and negative (block) edges, showing communication relationships alongside active blocking between instances. Intended for research into defederation studies, conflict resolution, trust and distrust analysis in decentralized networks.
Cite this dataset at
fedivertex-lemmy-federation-with-blocks.echo.directory
Analytics
Node size is centrality, colour is community. Hover a node for details; click one to isolate its community.
Computed over the full corpus.
Record
- Catalog key
fedivertex-lemmy-federation_with_blocks- Authors
- Damie, Marc; Cyffers, Edwige
- Year
- 2026
- Source paper
- Fedivertex: a Graph Dataset based on Decentralized Social Media
- DOI / arXiv
- 10.48550/arXiv.2505.20882
- License
- CC BY-NC-SA 4.0 (CC-BY-NC-SA-4.0)
- Records
- 779
- Nodes
- 779
- Edges
- 289,473 (directed)
- Nodes are
- instance
- Edges are
- federation / block
- Attributes
- nodes have no attributes; edges have no attributes
- Languages
- en
- Collected
- 20250203 to 20260413 (2020s)
- Tasks
- Edge sign prediction (binary) inferred
From the graph: link prediction, community detection - Region
- Global (inferred: the platform is used worldwide)
Provenance
- Originally published at
- https://huggingface.co/datasets/MarcDamie/Fedivertex link checked
- Hosted copy
- Mirrored on echo.directory on 2026-10-09, 250.6 MB across 124 files. Checksums in MANIFEST.json.
Citations
Fedivertex: a Graph Dataset based on Decentralized Social Networks for Trustworthy Machine Learning
Marc Damie, Edwige Cyffers
Journal Article · arXiv.org · 2025
Cited by
- Unified Privacy Guarantees for Decentralized Learning via Matrix Factorization
A. Bellet, Edwige Cyffers et al. · arXiv.org · 2025 · cited 3×
Citation data from Semantic Scholar, retrieved 2026-10-19.
How to cite
BibTeX
@misc{echo2026,
title = {ECHO: Exploratory Compendium of Humanity Online},
author = {Switzer, Braden and Zafarani, Reza},
year = {2026},
url = {https://echo.directory},
note = {Syracuse University}
}
@inproceedings{10.1145/3774904.3792868,
author = {Damie, Marc and Cyffers, Edwige},
title = {{Fedivertex: a Graph Dataset based on Decentralized Social Media}},
year = {2026},
isbn = {9798400723070},
publisher = {Association for Computing Machinery},
address = {New York, NY, USA},
url = {https://doi.org/10.1145/3774904.3792868},
doi = {10.1145/3774904.3792868},
booktitle = {Proceedings of the ACM Web Conference 2026},
pages = {8393--8396},
numpages = {4},
location = {United Arab Emirates},
series = {WWW '26}
} APA
Switzer, B., & Zafarani, R. (2026). ECHO: Exploratory Compendium of Humanity Online [Data repository]. Syracuse University. https://echo.directory
Damie, M., & Cyffers, E. (2026). Fedivertex: lemmy federation_with_blocks [Data set]. https://doi.org/10.48550/arXiv.2505.20882
MLA
Switzer, Braden, and Reza Zafarani. ECHO: Exploratory Compendium of Humanity Online. Syracuse University, 2026, echo.directory.
Damie, Marc, and Edwige Cyffers. Fedivertex: lemmy federation_with_blocks. 2026, doi.org/10.48550/arXiv.2505.20882.