ECHOExploratory Compendium of Humanity Online

Stack Exchange — opensource.stackexchange.com

AnalyzedSmallgraphtextStack ExchangeAcademicEngagementKnowledge sharingQ&ASocial graphSoftware development

A Stack Exchange (opensource.stackexchange.com) dataset of 3,715 users, 5,956 answer-collaboration edges, 4,763 questions, 6,882 answers, collected by Stack Exchange, Inc. via the annual Stack Exchange Data Dump. Each record contains user nodes (reputation, badge counts, vote history), directed weighted edges (answerer→asker, weight=answer score, count=interactions, accepted=bool), post text, tag distribution. User collaboration network from opensource.stackexchange.com — directed weighted graph where edges represent knowledge-sharing relationships (A answered B's question), with edge weight reflecting answer quality. Enables prestige hierarchy, community detection, and expertise flow analysis.. Suitable for expertise network analysis, reputation systems, community detection, knowledge flow, PageRank-based authority ranking, Q&A platform dynamics..

#Expertise network#Open source#Software license#Stack exchange data dump

Cite this dataset at stackexchange-opensource-stackexchange-com.echo.directory

Download data BibTeX JSONSimilar datasets

Analytics

The interactive network needs JavaScript.

· graph.json

The full graph has 3,715 nodes; this view shows the 1,000-node sample the pipeline drew for display. Node size is centrality, colour is community.

3.7K
Nodes
6K
Edges
4.32e-04
Density
54
Components
-0.2421
Assortativity
1.8%
Reciprocity
2.3K
Bridges
Most central nodes
2710.01481
550.01265
290.01023
690.00969
1990.00646
1750.00619
6060.00619
1380.00592
370.00592
1680.00565
Content metrics

11,645 records scored · min–maxmean ± 0.675 σ (the interquartile range if the values are roughly normal)mean

scoreμ 5.594 ± 9.251
min -8max 242
view countμ 522.15 ± 2.8K
min 0max 138.7K
answer countμ 0.591 ± 1.003
min 0max 11
comment countμ 2.135 ± 2.859
min 0max 29
9.8
Flesch–Kincaid grade
US school grade level
10.6
Automated readability index
Frequent terms
licensecodesourcesoftwaregpluseworkopencopyrightprojectquotquestionlicenseslicensedfreelikelibrarywantdonprogramfilemitversiontermsanswerneedcasedistributewaypeopleoriginalthinkcopyexamplederivativedifferentrightspublicfileslegallgplapachenoticecommercialusersdoesnincludeuserauthorlicence
Topic clusters

Topic 0

gpl
library
program
code
license
lgpl
source
distribute

Topic 1

work
copyright
license
patent
creative
right
domain
public

Topic 2

gpl
lgpl
library
code
gnu
license
software
use

Topic 3

project
open
people
fork
source
request
time
issue

Topic 4

question
answer
vote
meta
close
think
comment
edit

Topic 5

license
licensing
licence
code
project
use
dual
file

Topic 6

mit
license
apache
project
code
use
file
library

Topic 7

linux
kernel
driver
hardware
device
system
gnu
software

Topic 8

free
freedom
software
open
source
definition
osi
license

Topic 9

bsd
clause
license
code
copyright
gpl
notice
use

Topic 10

github
repository
commit
fork
license
git
code
project

Topic 11

agpl
user
network
modify
program
source
code
server
Show all 19 topics

Topic 12

open
source
project
software
closed
contribute
development
programming

Topic 13

open
source
license
commercial
project
use
software
closed

Topic 14

apache
notice
file
license
works
derivative
include
copyright

Topic 15

datum
model
database
dataset
train
license
use
data

Topic 16

mit
notice
license
copyright
software
include
copy
file

Topic 17

game
api
asset
mod
engine
license
use
code

Topic 18

agpl
application
license
service
ghostscript
code
server
use
Top hashtags
#284
#172
#include63
#360
#mereaggregation60
#define48
#gplplugins35
#3927
#license24
#421
#gplincompatiblelibs19
#can15
#gplrequiresourcepostedpublic14
#iflibraryisgpl14
#613
#internaldistribution12
#gploutput11
#developerviolate9
#gplinproprietarysystem9
#gplstaticvsdynamic9

Computed over the full corpus.

Record

Catalog key
stackexchange-opensource-stackexchange-com
Authors
Stack Exchange, Inc.
Year
2025
Source paper
Stack Exchange Data Dump
License
CC BY-SA 2.5 / 3.0 / 4.0 (by post date) (CC-BY-SA-2.5 AND CC-BY-SA-3.0 AND CC-BY-SA-4.0)
Records
41,741
Nodes
3,715
Edges
5,956 (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
2015/2024 (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/download/stackexchange link checked
Hosted copy
Mirrored on echo.directory on 2026-10-09, 16.9 MB across 1 files. Checksums in MANIFEST.json.

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_2025,
  title     = {Stack Exchange Data Dump},
  author    = {{Stack Exchange, Inc.}},
  year      = {2025},
  publisher = {Internet Archive},
  url       = {https://archive.org/download/stackexchange}
}

APA

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

Stack Exchange, Inc. (2025). Stack Exchange — opensource.stackexchange.com [Data set]. https://stackexchange-opensource-stackexchange-com.echo.directory/

MLA

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

Stack Exchange, Inc. Stack Exchange — opensource.stackexchange.com. 2025, stackexchange-opensource-stackexchange-com.echo.directory/.

BibTeX · RIS · CSL-JSON

Similar datasets 10 all with scores →