Stack Exchange — quantumcomputing.stackexchange.com

A Stack Exchange (quantumcomputing.stackexchange.com) dataset of 3,978 users, 9,651 answer-collaboration edges, 11,179 questions, 12,778 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 quantumcomputing.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#Quantum computing#Stack exchange data dump

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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

23,957 records scored · min–maxmean ± 0.675 σ (the interquartile range if the values are roughly normal)mean

scoreμ 3.1 ± 3.983
min -8max 179
view countμ 225.071 ± 939.117
min 0max 41.4K
answer countμ 0.534 ± 0.826
min 0max 13
comment countμ 1.432 ± 2.236
min 0max 42
10.7
Flesch–Kincaid grade
US school grade level
12.6
Automated readability index
Frequent terms
rangleampquantumstatequotqubitcircuitfracqubitsotimeslanglepsirightgatesqrtleftqiskitendstatesrhomatrixbegingatesusequestionclassicalbasislikephicodealgorithmexampleerrormeasurementmathcalthetaunitarywaycasepmatrixknownumberresulttimeanswerdaggerneedproblemprobabilityimport
Topic clusters

Topic 0

quantum
computer
algorithm
classical
computing
problem
machine
time

Topic 1

qiskit
circuit
import
backend
job
run
error
result

Topic 2

grover
oracle
algorithm
search
quantum
problem
function
key

Topic 3

hamiltonian
problem
vqe
energy
qaoa
ground
import
quantum

Topic 4

gate
qubit
control
cnot
state
apply
toffoli
target

Topic 5

error
code
stabilizer
logical
qubit
correction
group
clifford

Topic 6

amp
matrix
gate
control
qubit
phase
state
global

Topic 7

haar
measure
state
random
basis
mean
probability
measurement

Topic 8

density
matrix
operator
vector
unitary
eigenvalue
state
space

Topic 9

gate
control
qiskit
cnot
circuit
hadamard
custom
create

Topic 10

qubit
state
basis
measure
probability
measurement
system
superposition

Topic 11

sphere
bloch
state
axis
point
vector
angle
qubit
Show all 16 topics

Topic 12

entanglement
state
entangle
entangled
separable
maximally
qubit
pure

Topic 13

kraus
channel
operator
map
choi
positive
representation
trace

Topic 14

bob
alice
teleportation
send
state
qubit
pair
protocol

Topic 15

hhl
estimation
algorithm
phase
eigenvalue
matrix
register
linear
Top hashtags
#1513
#2130
#print58
#qc56
#3951
#349
#circuit43
#p40
#f0032
#qiskit30
#create19
#first17
#number17
#set17
#99916
#define16
#deprecations16
#for15
#the15
#this14

Sampled: text metrics from 50K of 70.2K records; topic model from 20K.

Record

Catalog key
stackexchange-quantumcomputing-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
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/download/stackexchange link checked
Hosted copy
Mirrored on echo.directory on 2026-10-09, 28.7 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 — quantumcomputing.stackexchange.com [Data set]. https://stackexchange-quantumcomputing-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 — quantumcomputing.stackexchange.com. 2025, stackexchange-quantumcomputing-stackexchange-com.echo.directory/.

BibTeX · RIS · CSL-JSON

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