Stack Exchange — physics.stackexchange.com
The content of physics.stackexchange.com (https://physics.stackexchange.com/), a Stack Exchange question-and-answer site, as published in the Stack Exchange Data Dump of April 2024 on the Internet Archive. The posts table holds 1,712,580 rows: 577,301 posts (234,152 questions, 341,531 answers, 788 tag wiki excerpts, 788 tag wikis, 2 posts of type 3, 34 posts of type 6 and 6 posts of type 7) and 1,135,279 comments, written between 24 August 2010 and 31 March 2024. Beside it are 319,435 user accounts, 2,357,504 votes, 571,923 badges awarded, 897 tags, 1,949,591 post revisions and 106,754 links between posts. Every answer keeps the question it answers and every comment the post it was written on, so the threads can be rebuilt. The Internet Archive item describes the dump as anonymised; the votes table names the voter in only 6,107 rows.
Cite this dataset at
stackexchange-physics.echo.directory
Analytics
The full graph has 83,259 nodes; this view shows the 1,000-node sample the pipeline drew for display. Node size is centrality, colour is community.
Topic 0
Topic 1
Topic 2
Topic 3
Topic 4
Topic 5
Topic 6
Topic 7
Topic 8
Topic 9
Topic 10
Topic 11
Show all 16 topics
Topic 12
Topic 13
Topic 14
Topic 15
Computed over the full corpus.
Record
- Catalog key
stackexchange-physics-stackexchange-com- Authors
- Stack Exchange, Inc.
- Year
- 2024
- Source paper
- Stack Exchange Data Dump
- License
- CC BY-SA 2.5 / 3.0 / 4.0 (by contribution date) (CC-BY-SA-2.5 AND CC-BY-SA-3.0 AND CC-BY-SA-4.0)
- Records
- 1,947,264
- Nodes
- 83,259
- Edges
- 278,777 (directed)
- Nodes are
- user (Stack Exchange account)
- Edges are
- answer collaboration (A answered B's question)
- Attributes
- nodes have attributes; edges have attributes
- Text corpus
- question titles, post bodies, comment text, tag names
- Languages
- en
- Collected
- 2010/2024 (2010s, 2020s)
- Tasks
- From the graph: link prediction, community detection
- Region
- Global (inferred: the platform is used worldwide)
Provenance
- Originally published at
- https://archive.org/details/stackexchange link checked
- Original files as received
- The source files, unconverted, kept for reference: mirrored on echo.directory on 2026-10-09, 695.5 MB across 1 files. Checksums in MANIFEST.json. For use, start with the data package below.
- Data package
- Version 1.0.0 of this dataset as an ECHO Data Package: posts (1,712,580 rows), users (319,435 rows), x_votes (2,357,504 rows), x_badges (571,923 rows), x_tags (897 rows), x_post_history (1,949,591 rows), x_post_links (106,754 rows).
- Structure
- Temporal (timestamped), Node attributes, Text, Threaded conversations
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}
}
@misc{stackexchange_2024,
title = {Stack Exchange Data Dump},
author = {{Stack Exchange, Inc.}},
year = {2024},
month = {apr},
publisher = {Internet Archive},
url = {https://archive.org/details/stackexchange}
} APA
Switzer, B., & Zafarani, R. (2026). ECHO: Exploratory Compendium of Humanity Online [Data repository]. Syracuse University. https://echo.directory
Stack Exchange, Inc. (2024). Stack Exchange — physics.stackexchange.com [Data set]. https://stackexchange-physics.echo.directory/
MLA
Switzer, Braden, and Reza Zafarani. ECHO: Exploratory Compendium of Humanity Online. Syracuse University, 2026, echo.directory.
Stack Exchange, Inc. Stack Exchange — physics.stackexchange.com. 2024, stackexchange-physics.echo.directory/.