Stack Exchange — or.stackexchange.com

A Stack Exchange (or.stackexchange.com) dataset of 1,753 users, 4,296 answer-collaboration edges, 4,082 questions, 5,547 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 or.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..

#Operations research#Optimization#Reputation#Stack exchange data dump

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Analytics

The interactive network needs JavaScript.

· graph.json

The full graph has 1,753 nodes; this view shows the 1,000-node sample the pipeline drew for display. Node size is centrality, colour is community.

1.8K
Nodes
4.3K
Edges
1.40e-03
Density
20
Components
-0.2422
Assortativity
1.3%
Reciprocity
836
Bridges
Most central nodes
3500.02397
59710.0234
33050.02169
33960.02169
8580.02169
1390.02055
1990.02055
380.02055
650.01941
8360.01941
Content metrics

9,629 records scored · min–maxmean ± 0.675 σ (the interquartile range if the values are roughly normal)mean

scoreμ 4.781 ± 4.987
min -9max 62
view countμ 233.04 ± 828.868
min 0max 18.6K
answer countμ 0.576 ± 1.063
min 0max 17
comment countμ 1.968 ± 2.75
min 0max 45
9.8
Flesch–Kincaid grade
US school grade level
10.8
Automated readability index
Frequent terms
problemampmodelquotconstraintssolutionconstrainttimevariablesobjectiveusesolveroptimizationsolvefunctionvariablesetsum_likevaluequestionproblemsnumberendlineartextexampleneedintegerquadwantoptimalbinarysumprogrammingleqfindanswercaseforallwayrightknowcostbeginthinkalignfollowingalgorithmconvex
Topic clusters

Topic 0

convex
problem
objective
function
solution
constraint
linear
variable

Topic 1

question
answer
thank
research
work
people
think
code

Topic 2

variable
constraint
binary
enforce
linearize
value
introduce
linear

Topic 3

gurobi
model
pyomo
solver
pyo
presolve
variable
return

Topic 4

task
job
time
machine
shift
scheduling
worker
day

Topic 5

node
edge
graph
flow
arc
path
problem
network

Topic 6

cplex
solution
iteration
cut
int
callback
constraint
dual

Topic 7

vehicle
route
problem
time
node
routing
travel
customer

Topic 8

inventory
demand
product
order
cost
period
time
unit
Top hashtags
#149
#238
#define36
#include35
#328
#print20
#objective14
#constraints13
#model12
#potência12
#create11
#the11
#410
#ne10
#variables10
#j9
#398
#58
#78
#for8

Computed over the full corpus.

Record

Catalog key
stackexchange-or-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
33,122
Nodes
1,753
Edges
4,296 (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
2019/2024 (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, 12.2 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 — or.stackexchange.com [Data set]. https://stackexchange-or-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 — or.stackexchange.com. 2025, stackexchange-or-stackexchange-com.echo.directory/.

BibTeX · RIS · CSL-JSON

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