Stack Exchange — biology.stackexchange.com

LimitedMediumgraphtextStack Exchange

The content of biology.stackexchange.com (https://biology.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 172,175 rows: 62,286 posts (28,798 questions, 32,296 answers, 584 tag wiki excerpts, 584 tag wikis, 20 posts of type 6 and 4 posts of type 7) and 109,889 comments, written between 26 May 2011 and 31 March 2024. Beside it are 61,628 user accounts, 328,782 votes, 104,929 badges awarded, 745 tags, 229,018 post revisions and 5,680 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 725 rows.

Download data package README Original files as received BibTeX JSONSimilar datasets

Analytics

The interactive network needs JavaScript.

· graph.json

The full graph has 172,175 nodes; this view shows the 1,000-node sample the pipeline drew for display. Node size is centrality, colour is community.

172.2K
Nodes
142.2K
Edges
4.80e-06
Density
30K
Components
0.0%
Reciprocity
142.2K
Bridges
Most central nodes
420330.00038
893820.0002
94190.0002
136650.00018
539550.00017
206570.00017
170770.00016
859430.00016
786990.00016
161060.00015
Content metrics

172,175 records scored · min–maxmean ± 0.675 σ (the interquartile range if the values are roughly normal)mean

x scoreμ 1.638 ± 4.245
min -9max 307
x view countμ 2K ± 9.4K
min 3max 533.8K
x answer countμ 1.122 ± 0.916
min 0max 11
x comment countμ 1.765 ± 2.523
min 0max 63
x favorite count0.4% true
true 0.4%false 99.7%
9.8
Flesch–Kincaid grade
US school grade level
10.4
Automated readability index
Frequent terms
questionlikeanswercellscelldifferentdnaspeciesthinkknowdontimeproteinuseexamplegenehumanfindwayfoundbodyneedgoodwaterbloodgenesbiologyproteinsnumbercasepossiblesystemspecifichumanspeopleinformationlongmeanevolutionpointwantenergylooknewgeneticthanksbacteriaunderstandsequencehelp
Topic clusters

Topic 0

question
answer
thank
biology
ask
edit
think
add

Topic 1

population
chromosome
allele
genetic
evolution
selection
trait
specie

Topic 2

sequence
dna
rna
gene
strand
protein
codon
plasmid

Topic 3

glucose
atp
blood
energy
pressure
fat
acid
water

Topic 4

plant
leaf
tree
photosynthesis
water
grow
fruit
light

Topic 5

spider
insect
find
like
specie
fly
look
ant

Topic 6

neuron
brain
potential
axon
nerve
cell
ion
channel

Topic 7

virus
cell
immune
vaccine
antibody
antigen
infection
viral
Top hashtags
#2169
#1139
#v90
#355
#403632
#428
#q27
#imgrc21
#page18
#515
#cite_note15
#page_scan_tab_contents14
#613
#712
#3966911
#98
#87
#section7
#570666
#etymology6
Top emoji
👽1

Computed over the full corpus.

Record

Catalog key
stackexchange-biology-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
172,175
Nodes
172,175
Edges
142,185 (directed)
Collected
2011/2024 (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, 78.7 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 (172,175 rows), users (61,628 rows), x_votes (328,782 rows), x_badges (104,929 rows), x_tags (745 rows), x_post_history (229,018 rows), x_post_links (5,680 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 — biology.stackexchange.com [Data set]. https://stackexchange-biology.echo.directory/

MLA

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

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

BibTeX · RIS · CSL-JSON

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