stackoverflow — Stack Overflow favorites (2011)

Description

A bipartite network of users and the questions they marked as favorites on Stack Overflow, the question-and-answer website on computer programming of the Stack Exchange network. Users of Stack Overflow could mark a question as a "favorite" (a feature later renamed "bookmarks") to follow it and find it again later. The data are from the Stack Exchange data dump of December 2011, which contains the public content of the site from its start in July 2008 to early December 2011, published by Stack Exchange under the CC BY-SA 3.0 license. Nodes are users and questions, and an undirected edge connects a user to a question that the user had marked as favorite at the time of the dump, timestamped with the day it was marked. Favorites that were later removed are not in the data.

Only the users with at least one favorite and the questions that are a favorite of at least one user are included. The favorites of 17,359 questions that are not in the dump (presumably deleted after being marked, while the votes were kept) are included, but these questions have no metadata.

The network has the following properties:

(Node) is_user: whether the node is a user (otherwise it is a question).
(Node) so_id: the Stack Overflow id of the user or question (users have pages at https://stackoverflow.com/users/<so_id>, and questions at https://stackoverflow.com/questions/<so_id>).
(Node) created: the creation time of the user account or the question (Unix time; -1 if unknown).
(Node) name (users): the display name of the user.
(Node) reputation (users): the reputation score of the user (-1 if unknown).
(Node) title, tags (questions): the title and the tags of the question (as written on the site, e.g. <c#><winforms>).
(Node) score (questions): the score (up votes minus down votes) of the question.
(Node) views (questions): the number of times it was viewed.
(Node) missing (questions): whether the question is absent from the dump (then title and tags are empty, created and views are -1, and score is 0).
(Edge) time: the day at which the user marked the question as favorite (Unix time of midnight UTC).

Tags

Economic Preferences Unweighted Timestamps Metadata

Added

2020-08-11

Citation

Stack Exchange, Inc., "Stack Exchange Data Dump - Dec 2011." archive.org

Upstream URL OK

https://archive.org/details/stack-exchange-data-dump-2011-12-xml

Upstream license

Creative Commons Attribution-ShareAlike 3.0 (CC BY-SA 3.0), https://creativecommons.org/licenses/by-sa/3.0/

Networks

Tip: hover over a column header for a description.

Column legend

$\left<k\right>$: Mean degree
$\sigma_k$: Standard deviation of the degrees
$\lambda_h$: Largest eigenvalue of the Hashimoto (non-backtracking) matrix
$\tau$: Random walk mixing time
$r$: Degree assortativity
$c$: Global clustering coefficient
$\oslash$: (Pseudo-) diameter
$S$: Relative size of the largest component
NPs: Node properties
EPs: Edge properties

Name	Nodes	Edges	$\left<k\right>$	$\sigma_k$	$\lambda_h$	$\tau$	$r$	$c$	$\oslash$	$S$	Kind	Mode	NPs	EPs	gt	GraphML	GML	csv
stackoverflow	641,876	1,302,040	4.06	25.07	88.46	136.55	-0.05	0.00	20	0.94	Undirected	Bipartite	is_user so_id created reputation views score missing name title tags	time	30.5 MiB	43.0 MiB	41.2 MiB	45.6 MiB

Ridiculograms^*

^* These are automatically generated force-directed visualizations, and can be quite meaningless for networks both big and small. They should not be taken seriously as sources of scientific insight. See here for a discussion.