Edit Count

From SONIVIS:Wiki

Edit Count

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This general metric can be applied on all information spaces.

This metric attributes to an actor.

The Edit Count defines the number of edits an author made on pages in all namespaces in a specified period of time. It differs from the Page Changed Count because here the number of revisions an author made is given.

Objective

This measure shows how actively an author changed the dynamic content elements in a Wiki. Therefore is can be said, that as higher the measure is compared to other authors as better is the externalization process of this author. (Please note: Here the Amount Contribution should be considered as well). B. Adler, L. de Alfaro, I. Pye and V. Raman^[1] call this measure Number of Edits.

The SONIVIS Software enables the user to define in the settings which namespace should be considered as main namespace, that means as namespace which contains the dynamic content elements in a Wiki.

Calculation

B. Adler, L. de Alfaro, I. Pye and V. Raman^[1] define the measure as follows:

$\mathcal P$ 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 $r i$

Statement

SQL-example (MediaWiki)

SELECT count(*) FROM revision r WHERE r.rev_user=1370 AND r.rev_timestamp BETWEEN "20071224000000" AND "20081223000000";

Categorization in SONIVIS Preference Page

MetricCategory.NODE_METRICS

Reference

B. Adler, L. de Alfaro, I. Pye, V. Raman. Measuring Author Contributions to the Wikipedia. In WikiSym 2008: International Symposium on Wikis, ACM Press, 2008.

[1]

[1]

Edit Count

From SONIVIS:Wiki

Objective

Calculation

Statement

Categorization in SONIVIS Preference Page

Reference

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