Stack Exchange — quantumcomputing.stackexchange.com

The content of quantumcomputing.stackexchange.com (https://quantumcomputing.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 59,003 rows: 24,675 posts (11,179 questions, 12,778 answers, 352 tag wiki excerpts, 352 tag wikis, 11 posts of type 6 and 3 posts of type 7) and 34,328 comments, written between 12 March 2018 and 31 March 2024. Beside it are 23,071 user accounts, 93,358 votes, 32,828 badges awarded, 318 tags, 86,887 post revisions and 3,412 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 268 rows.

#Expertise network#Quantum computing#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 3,978 nodes; this view shows the 1,000-node sample the pipeline drew for display. Node size is centrality, colour is community.

4K
Nodes
9.7K
Edges
6.10e-04
Density
48
Components
-0.1328
Assortativity
1.4%
Reciprocity
1.9K
Bridges
Most central nodes
90060.01408
550.01383
50080.01257
260.01132
48310.01106
123340.0093
13510.0093
26450.00905
60700.0083
29270.00779
Content metrics

59,003 records scored · min–maxmean ± 0.675 σ (the interquartile range if the values are roughly normal)mean

x scoreμ 1.476 ± 2.934
min -8max 179
x view countμ 482.336 ± 1.3K
min 6max 41.4K
x answer countμ 1.145 ± 0.874
min 0max 13
x comment countμ 1.392 ± 2.217
min 0max 42
x favorite count2.8% true
true 2.8%false 97.2%
10.1
Flesch–Kincaid grade
US school grade level
11.8
Automated readability index
Frequent terms
ranglequantumstatequbitcircuitfracqubitsotimeslanglepsigaterightsqrtstatesleftqiskitrhomatrixquestionendgatesusebeginlikecodeclassicalbasisexamplemeasurementerroransweralgorithmphimathcalwaycaseunitaryknowthetaneednumbertimeproblemresultpmatrixwantdaggerthinkprobabilitydon
Topic clusters

Topic 0

qiskit
import
backend
circuit
run
job
cirq
code

Topic 1

error
code
stabilizer
logical
qubit
stim
surface
correction

Topic 2

gate
control
qubit
cnot
target
swap
apply
phase

Topic 3

thank
answer
lot
question
explanation
link
comment
help

Topic 4

question
answer
edit
ask
post
think
sorry
close

Topic 5

computer
quantum
classical
algorithm
problem
computing
annealing
solve

Topic 6

gate
cnot
control
hadamard
toffoli
rotation
swap
set

Topic 7

matrix
unitary
eigenvalue
hermitian
space
eigenvector
operator
basis

Topic 8

oracle
grover
algorithm
search
database
problem
query
function

Topic 9

entanglement
entangle
state
maximally
entangled
separable
qubit
mixed

Topic 10

qubit
state
measure
probability
measurement
second
mean
single

Topic 11

computing
quantum
welcome
learn
physics
question
science
programming
Show all 26 topics

Topic 12

bloch
sphere
axis
rotation
vector
angle
state
point

Topic 13

bob
alice
teleportation
send
pair
state
share
qubit

Topic 14

matrix
product
tensor
vector
pauli
basis
column
element

Topic 15

circuit
wire
job
backend
result
return
tape
file

Topic 16

clifford
group
hierarchy
gate
pauli
stabilizer
non
subgroup

Topic 17

calculation
equation
notation
mean
formula
expression
answer
write

Topic 18

gate
qiskit
import
circuit
custom
quantumcircuit
implement
control

Topic 19

pennylane
quantum
learning
machine
neural
gradient
network
tensorflow

Topic 20

paper
link
thank
answer
reference
relevant
interesting
look

Topic 21

kraus
choi
operator
channel
map
representation
positive
matrix

Topic 22

phase
global
rotation
angle
axis
relative
factor
rotate

Topic 23

superconducte
ion
trap
qubit
frequency
temperature
transmon
charge

Topic 24

density
matrix
projector
map
pure
mixed
operator
state

Topic 25

probability
measurement
distribution
outcome
measure
think
random
value
Top hashtags
#1533
#2134
#print58
#qc56
#circuit54
#349
#p49
#qiskit45
#f0032
#create19
#first17
#number17
#set17
#99916
#define16
#deprecations16
#for16
#the15
#this14
#012

Computed over the full corpus.

Record

Catalog key
stackexchange-quantumcomputing-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
70,200
Nodes
3,978
Edges
9,651 (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
2018/2024 (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, 28.7 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 (59,003 rows), users (23,071 rows), x_votes (93,358 rows), x_badges (32,828 rows), x_tags (318 rows), x_post_history (86,887 rows), x_post_links (3,412 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 — quantumcomputing.stackexchange.com [Data set]. https://stackexchange-quantumcomputing.echo.directory/

MLA

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

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

BibTeX · RIS · CSL-JSON

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