Stack Exchange — engineering.stackexchange.com

The content of engineering.stackexchange.com (https://engineering.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 108,430 rows: 37,688 posts (16,173 questions, 21,229 answers, 139 tag wiki excerpts, 139 tag wikis and 8 posts of type 6) and 70,742 comments, written between 20 January 2015 and 31 March 2024. Beside it are 40,577 user accounts, 95,211 votes, 49,218 badges awarded, 480 tags, 120,563 post revisions and 985 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 126 rows.

#Engineering#Expertise network#Reputation#Stack exchange data dump

Download data package README Original files as received BibTeX JSONSimilar datasets

Analytics

The interactive network needs JavaScript.

· graph.json

The full graph has 9,421 nodes; this view shows the 1,000-node sample the pipeline drew for display. Node size is centrality, colour is community.

9.4K
Nodes
18K
Edges
2.03e-04
Density
162
Components
-0.1325
Assortativity
0.6%
Reciprocity
5K
Bridges
Most central nodes
133720.00732
610.00584
16720.00573
330.00552
950.00541
1100.0052
1910.00467
2030.00435
3740.00393
90.0035
Content metrics

108,430 records scored · min–maxmean ± 0.675 σ (the interquartile range if the values are roughly normal)mean

x scoreμ 0.795 ± 2.244
min -7max 133
x view countμ 1K ± 6.1K
min 3max 440.5K
x answer countμ 1.313 ± 1.139
min 0max 15
x comment countμ 1.877 ± 2.566
min 0max 49
8.9
Flesch–Kincaid grade
US school grade level
9.5
Automated readability index
Frequent terms
likeuseneedquestionpressurefracforcesystemwaterairknowheatdonpowertimepointflowloadwayrightanswerworkwantthinkenergytemperaturedesigndifferentmaterialmotorproblemfindcaseendbeamstressspeedtorqueexamplehighgoodsmallmassequationsteelleftareasurfacepossiblecontrol
Topic clusters

Topic 0

beam
force
stress
load
moment
shear
support
material

Topic 1

gear
motor
torque
wheel
speed
engine
shaft
car

Topic 2

question
answer
thank
comment
post
ask
edit
help

Topic 3

power
voltage
current
battery
frequency
circuit
light
device

Topic 4

heat
temperature
air
water
cool
energy
transfer
steam

Topic 5

pump
valve
pressure
water
flow
tank
pipe
air

Topic 6

steel
alloy
metal
material
weld
glass
aluminum
mold

Topic 7

sketch
drawing
line
view
draw
dimension
feature
circle

Topic 8

system
control
controller
loop
state
pid
function
input

Topic 9

bolt
nut
hole
thread
screw
drill
washer
machine

Topic 10

flow
pressure
fluid
pipe
velocity
rate
loss
equation
Top hashtags
#1190
#2143
#361
#451
#1027
#v21
#518
#715
#815
#612
#include8
#the8
#combo7
#q7
#356
#define5
#end5
#imgrc5
#page5
#these5

Computed over the full corpus.

Record

Catalog key
stackexchange-engineering-stackexchange-com
Authors
Stack Exchange, Inc.
Year
2024
Source paper
Stack Exchange Data Dump
License
CC BY-SA 3.0 / 4.0 (by contribution date) (CC-BY-SA-3.0 AND CC-BY-SA-4.0)
Records
124,979
Nodes
9,421
Edges
17,986 (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/details/stackexchange link checked
Original files as received
The source files, unconverted, kept for reference: mirrored on echo.directory on 2026-10-09, 41.5 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 (108,430 rows), users (40,577 rows), x_votes (95,211 rows), x_badges (49,218 rows), x_tags (480 rows), x_post_history (120,563 rows), x_post_links (985 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 — engineering.stackexchange.com [Data set]. https://stackexchange-engineering.echo.directory/

MLA

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

Stack Exchange, Inc. Stack Exchange — engineering.stackexchange.com. 2024, stackexchange-engineering.echo.directory/.

BibTeX · RIS · CSL-JSON

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