Opsahl UC Irvine Social Network
A UC Irvine online messaging system dataset of 1,899 nodes and 20,296 edges, collected by T. Opsahl. Each record contains directed: True, weighted: True, signed: False. Temporal directed messaging network among UC Irvine students with Unix timestamps.. Suitable for temporal network analysis, online social network analysis. The file holds 59,835 messages, one row per message; the edge count of 20,296 counts distinct pairs.
Cite this dataset at
opsahl-ucsocial.echo.directory
Analytics
The full graph has 1,899 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
opsahl-ucsocial- Authors
- Opsahl, Tore; Panzarasa, Pietro
- Year
- 2009
- Source paper
- Clustering in weighted networks
- DOI / arXiv
- 10.1016/j.socnet.2009.02.002
- License
- CC BY-SA 2.0 Germany (as stated by KONECT) (LicenseRef-CC-BY-SA-2.0-DE)
- Records
- 1,899
- Nodes
- 1,899
- Edges
- 20,296 (directed)
- Nodes are
- student
- Edges are
- message
- Attributes
- nodes have no attributes; edges have attributes
- Languages
- en
- Collected
- 2009 (2000s)
- Tasks
- From the graph: link prediction, community detection
Provenance
- Originally published at
- https://konect.cc/networks/opsahl-ucsocial/ unverified
- Hosted copy
- Mirrored on echo.directory on 2026-10-02, 317.6 KB across 1 files. Checksums in MANIFEST.json.
Citations
Clustering in weighted networks
T. Opsahl, P. Panzarasa
Journal Article · Soc. Networks · 2009
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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}
}
@article{Opsahl_2009,
title = {Clustering in weighted networks},
volume = {31},
issn = {0378-8733},
url = {http://dx.doi.org/10.1016/j.socnet.2009.02.002},
doi = {10.1016/j.socnet.2009.02.002},
number = {2},
journal = {Social Networks},
publisher = {Elsevier BV},
author = {Opsahl, Tore and Panzarasa, Pietro},
year = {2009},
month = May,
pages = {155–163}
} APA
Switzer, B., & Zafarani, R. (2026). ECHO: Exploratory Compendium of Humanity Online [Data repository]. Syracuse University. https://echo.directory
Opsahl, T., & Panzarasa, P. (2009). Opsahl UC Irvine Social Network [Data set]. https://doi.org/10.1016/j.socnet.2009.02.002
MLA
Switzer, Braden, and Reza Zafarani. ECHO: Exploratory Compendium of Humanity Online. Syracuse University, 2026, echo.directory.
Opsahl, Tore, and Pietro Panzarasa. Opsahl UC Irvine Social Network. 2009, doi.org/10.1016/j.socnet.2009.02.002.