BlogCatalog (v3) Friendship + Group Network

A BlogCatalog (v3) dataset of 10,312 bloggers and 333,983 friendship edges, collected by Agarwal et al. / Tang & Liu via BlogCatalog crawl. Each record contains blogger-blogger friendship edges, user IDs and group memberships. The dataset is notable for its blogosphere friendship network from BlogCatalog, used for familiar stranger detection and latent social dimensions research. Intended for research into social network analysis, community detection, group membership prediction, and blogosphere structure studies.

#Group membership#Node classification

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Analytics

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· graph.json

The full graph has 10,312 nodes; this view shows the 1,000-node sample the pipeline drew for display. Node size is centrality, colour is community.

10.3K
Nodes
334K
Edges
6.28e-03
Density
1
Components
-0.2541
Assortativity
0.0%
Reciprocity
270
Bridges
Most central nodes
48390.3872
1760.3807
43740.3345
81570.2886
12260.2696
49970.2624
49840.2545
88590.2514
6450.2479
4460.2465

Computed over the full corpus.

Record

Catalog key
blogcatalog-v3
Authors
Tang, Lei; Liu, Huan
Year
2009
Source paper
Relational Learning via Latent Social Dimensions
DOI / arXiv
10.1145/1557019.1557109
License
Academic Use (see Syracuse Data Lab terms) (LicenseRef-Research-Only)
Records
10,312
Nodes
10,312
Edges
333,983
Nodes are
blogger
Edges are
friendship
Attributes
nodes have attributes; edges have no attributes
Languages
en
Collected
2009 (2000s)
Tasks
From the graph: link prediction, community detection
Region
Global (inferred: the platform is used worldwide)

Provenance

Originally published at
https://datasets.syr.edu link checked
Hosted copy
Mirrored on echo.directory on 2026-10-16, 3.3 MB across 5 files. Checksums in MANIFEST.json.

Citations

Relational learning via latent social dimensions
Lei Tang, Huan Liu
Journal Article · Knowledge Discovery and Data Mining · 2009

852
citations
well cited
80
influential citations
9% of all citations

Cited by

Show all 10

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{tang2009relational,
  title     = {{Relational Learning via Latent Social Dimensions}},
  author    = {Tang, Lei and Liu, Huan},
  booktitle = {Proceedings of the 15th ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD'09)},
  pages     = {817--826},
  year      = {2009},
  doi       = {10.1145/1557019.1557109}
}

APA

Switzer, B., & Zafarani, R. (2026). ECHO: Exploratory Compendium of Humanity Online [Data repository]. Syracuse University. https://echo.directory

Tang, L., & Liu, H. (2009). BlogCatalog (v3) Friendship + Group Network [Data set]. https://doi.org/10.1145/1557019.1557109

MLA

Switzer, Braden, and Reza Zafarani. ECHO: Exploratory Compendium of Humanity Online. Syracuse University, 2026, echo.directory.

Tang, Lei, and Huan Liu. BlogCatalog (v3) Friendship + Group Network. 2009, doi.org/10.1145/1557019.1557109.

BibTeX · RIS · CSL-JSON

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