ECHOExploratory Compendium of Humanity Online

Stack Exchange — vi.stackexchange.com

AnalyzedSmallgraphtextStack ExchangeAcademicEngagementKnowledge sharingQ&ASocial graphSoftware development

A Stack Exchange (vi.stackexchange.com) dataset of 6,472 users, 13,767 answer-collaboration edges, 14,449 questions, 18,879 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 vi.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#Reputation#Stack exchange data dump#Text editor#Vim

Cite this dataset at stackexchange-vi-stackexchange-com.echo.directory

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Analytics

The interactive network needs JavaScript.

· graph.json

The full graph has 6,472 nodes; this view shows the 1,000-node sample the pipeline drew for display. Node size is centrality, colour is community.

6.5K
Nodes
13.8K
Edges
3.29e-04
Density
149
Components
-0.2147
Assortativity
0.6%
Reciprocity
3.7K
Bridges
Most central nodes
510.01283
10650.01097
4670.0102
530.00958
18410.00943
90240.00943
69520.00819
29200.00773
910.00757
46760.00742
Content metrics

33,328 records scored · min–maxmean ± 0.675 σ (the interquartile range if the values are roughly normal)mean

scoreμ 4.064 ± 11.538
min -6max 574
view countμ 851.657 ± 7.5K
min 0max 685.5K
answer countμ 0.567 ± 0.981
min 0max 17
comment countμ 1.784 ± 2.406
min 0max 28
8.6
Flesch–Kincaid grade
US school grade level
10.4
Automated readability index
Frequent terms
vimquotlinefileusecommandsetletlikefunctionmodewantbufferplugintextvimrchelpwaylinesampendcursorfilesworknormalsyntaxcurrentwindowfollowingexampledonneedterminalctrlautocmdopencodeinsertmatchsearchnnoremaptypenewfiletypemappingexecutelistcommandskeystart
Topic clusters

Topic 0

mapping
key
map
mode
nnoremap
insert
normal
use

Topic 1

syntax
highlight
color
syn
match
colorscheme
highlighting
set

Topic 2

vim
plugin
python
file
vimrc
version
usr
install

Topic 3

match
line
pattern
replace
character
regex
substitute
search

Topic 4

cursor
line
visual
select
text
selection
mode
position

Topic 5

indent
indentation
tab
space
set
line
expandtab
autoindent

Topic 6

autocmd
filetype
autocommand
augroup
file
ftplugin
set
buffer

Topic 7

snippet
completion
ultisnips
autocompletion
complete
autocomplete
plugin
youcompleteme

Topic 8

neovim
nvim
gvim
text
source
file
vim
window

Topic 9

comment
line
text
formatoption
set
paragraph
format
align

Topic 10

macro
register
record
line
yank
repeat
delete
command

Topic 11

file
vim
swap
buffer
directory
save
open
edit
Show all 14 topics

Topic 12

window
split
buffer
tab
open
new
vertical
current

Topic 13

netrw
nerdtree
open
file
directory
buffer
window
tree
Top hashtags
#begin413
#end330
#include191
#extensions143
#1142
#define142
#tabline108
#vim98
#infect91
#288
#complete88
#map68
#820267
#run56
#enabled52
#pum50
#348
#imaps44
#custom40
#endif40

Sampled: text metrics from 50K of 108.2K records; topic model from 20K.

Record

Catalog key
stackexchange-vi-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
108,243
Nodes
6,472
Edges
13,767 (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/download/stackexchange link checked
Hosted copy
Mirrored on echo.directory on 2026-10-09, 35.1 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 — vi.stackexchange.com [Data set]. https://stackexchange-vi-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 — vi.stackexchange.com. 2025, stackexchange-vi-stackexchange-com.echo.directory/.

BibTeX · RIS · CSL-JSON

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