BlogCatalog (v2) Friendship Network
A BlogCatalog (v2) dataset of 97,884 bloggers and 1,668,698 friendship edges, collected by Agarwal et al. / Tang & Liu via BlogCatalog crawl. Each record contains blogger-blogger friendship edges, user IDs. 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.
Cite this dataset at
blogcatalog-v2.echo.directory
Analytics
The full graph has 97,884 nodes; this view shows the 1,000-node sample the pipeline drew for display. Node size is centrality, colour is community.
Computed over the full corpus.
Record
- Catalog key
blogcatalog-v2- Authors
- Zafarani, Reza; Liu, Huan
- Year
- 2009
- Source paper
- Connecting Corresponding Identities across Communities
- DOI / arXiv
- 10.1609/icwsm.v3i1.13993
- License
- Academic Use (see Syracuse Data Lab terms) (LicenseRef-Research-Only)
- Records
- 97,884
- Nodes
- 97,884
- Edges
- 1,668,698
- Nodes are
- blogger
- Edges are
- friendship
- Attributes
- nodes have no 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, 22.5 MB across 3 files. Checksums in MANIFEST.json.
Citations
Connecting Corresponding Identities across Communities
R. Zafarani, Huan Liu
Journal Article · International Conference on Web and Social Media · 2009
Cited by
- Social Media Mining
Mohammad Ali Abbasi, Huan Liu et al. · Encyclopedia of Social Network Analysis and Mining. 2nd Ed. · 2014 · cited 624× - Connecting users across social media sites: a behavioral-modeling approach
R. Zafarani, Huan Liu · Knowledge Discovery and Data Mining · 2013 · cited 443× - Social recommendation: a review
Ji-Liang Tang, Xia Hu et al. · Social Network Analysis and Mining · 2013 · cited 435× - Web Data Extraction, Applications and Techniques: A Survey
Emilio Ferrara, Pasquale De Meo et al. · Knowledge-Based Systems · 2012 · cited 414× - COSNET: Connecting Heterogeneous Social Networks with Local and Global Consistency
Yutao Zhang, Jie Tang et al. · Knowledge Discovery and Data Mining · 2015 · cited 319×
Show all 10
- User Identity Linkage across Online Social Networks: A Review
Kai Shu, Suhang Wang et al. · SKDD · 2017 · cited 279× - An efficient reconciliation algorithm for social networks
Nitish Korula, Silvio Lattanzi · Proceedings of the VLDB Endowment · 2013 · cited 274× - HYDRA: large-scale social identity linkage via heterogeneous behavior modeling
Si-Yuan Liu, Shuhui Wang et al. · SIGMOD Conference · 2014 · cited 267× - What's in a name?: an unsupervised approach to link users across communities
Jing Liu, Fan Zhang et al. · Web Search and Data Mining · 2013 · cited 265× - Predict Anchor Links across Social Networks via an Embedding Approach
Tong Man, Hua-Wei Shen et al. · International Joint Conference on Artificial Intelligence · 2016 · cited 264×
Citation data from Semantic Scholar, retrieved 2026-10-22.
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}
}
@article{Zafarani_2009,
title = {Connecting Corresponding Identities across Communities},
volume = {3},
issn = {2162-3449},
url = {http://dx.doi.org/10.1609/icwsm.v3i1.13993},
doi = {10.1609/icwsm.v3i1.13993},
number = {1},
journal = {Proceedings of the International AAAI Conference on Web and Social Media},
publisher = {Association for the Advancement of Artificial Intelligence (AAAI)},
author = {Zafarani, Reza and Liu, Huan},
year = {2009},
month = Mar,
pages = {354–357}
} APA
Switzer, B., & Zafarani, R. (2026). ECHO: Exploratory Compendium of Humanity Online [Data repository]. Syracuse University. https://echo.directory
Zafarani, R., & Liu, H. (2009). BlogCatalog (v2) Friendship Network [Data set]. https://doi.org/10.1609/icwsm.v3i1.13993
MLA
Switzer, Braden, and Reza Zafarani. ECHO: Exploratory Compendium of Humanity Online. Syracuse University, 2026, echo.directory.
Zafarani, Reza, and Huan Liu. BlogCatalog (v2) Friendship Network. 2009, doi.org/10.1609/icwsm.v3i1.13993.