Edit Quality

From SONIVIS:Wiki

Edit Quality

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This metric attributes to an actor.

This metric is based on articles. For more information see configuration.

Edit Quality defines how close one edit made by an actor takes the page to subsequent version of a page.

Objective

This measures describes the quality of a single contribution made by an actor. Is is an activity of an author regarding her/his content contribution. B. Adler, L. de Alfaro, I. Pye and V. Raman "associate a higher edit quality to revision $r i$ if the edits made take the page closer to subsequent versions of the page."^[1]. This measure is used for the calculation of the Average Edit Quality and the Edit Longevity.

Calculation

B. Adler, L. de Alfaro, I. Pye and V. Raman define the measure as follows^[1]: $α e d i t (v i, v j)$ as quality of edits performed in revision $r i$ of a page (with respect to $v j$ )

$\mathcal P$ set of all articles
$\mathcal A$ set of authors of a page
$n > 0$ revisions $v_0,v_1,v_2,\ldots,v_n$ of a page $p$ (version $v 0$ is empty; version $v 1$ , for $1<i\leq n$ is obtained by an author performing a revision $r_i:v_{i-1} \ \rightsquigarrow v_i$ )
$a i$ is the author of revision $r i$
$\mathcal R$ set of revision of a page
$E : \mathcal A x \mathcal P \rightarrow 2^{\mathcal R}$ map given an author $a \in \mathcal A$ and a page $p \in \mathcal P$ returns revisions created by author $a$ for page <maht>p</math>
$1 \leq i \leq n$ having $a_{i-1} \neq a_i$ (filter versions, keeping only last of consecutive versions by same author)
every version $v i$ for $1 \leq i \leq n$ consists of a sequence $[w^i_1, \ldots , w^i_{m_i}]$ of words, where $m i$ is the number of words in $v i$ (version $v 0$ consists of an empty sequence)
$t x t (v i, v j)$ for $1 \leq i \leq j \leq n$ amount of text (measured in number of words) introduced by $r i$ in $v i$ still present in $v j$
$t x t (v i, v i)$ amount of text added by $a i$
$t x t (r i) = t x t (v i, v i)$ is the text contribution of $r i$
$d (v i, v j)$ for $1 \leq i \leq j \leq n$ edit distance between $v i$ and $v j$ measures how much changed from $v i$ to $v j$
$d (r i) = d (v i - 1, v i)$ is the edit contribution made in $r i$

Reference

Presentation at WikiSym '08

  @inproceedings{Adler2008,
	title = {Measuring Author Contribution to the Wikipedia},
	address = {Porto, Portugal},
	author = {B. Thomas Adler and Luca de Alfaro and Ian Pye and Vishwanath Raman},
	booktitle = {WikiSym ’08},
	month = {September},
	url = {http://www.wikisym.org/ws2008/proceedings/research%20papers/18500027.pdf},
	year = {2008},
	keywords = {Wikipedia contribution edit_longevity quality wiki}
  }

[1]

Edit Quality

From SONIVIS:Wiki

Objective

Calculation

Reference

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