Hi John,

you are correct.    If person A makes her first edit to the Wikipedia, the edit is colored red as A has no reputation at the time of the edit.
Suppose nobody then edits that page again.  Even if A later gains reputation, the edit stays colored red.

In practice, we have not found this to be a problem on the Wikipedia.   The pages that are even mildly interesting are receiving at least some edit every one in a long while; there are very few pages that are both interesting, and have not received an edit in the past year.  We can certainly be suboptimal in "fringe" pages, but it is not a big issue.

On the other hand, we suspect the above can be a problem in other wikis.  I am thinking for instance at technical wikis, where someone may have documented long time ago some piece of code, or some protocol, or have added some technical specifications, and the information is then left unchanged, as it is understood to be correct, and not relevant enough to warrant tinkering with the text.

So it would certainly be interesting to develop a sort of "trust correction crawler" that picks pages that have not been touched in a long while, and recomputes the trust of their content based on the CURRENT reputation of the authors.  I think that not only it would be interesting, but it would also not be very hard to do.   If anyone of you feels like adding this, we can help explain how to do it in the code; otherwise, we may add it to the tool ourselves at some point. If you don't mind John, can I put this on the "todo" list?

Luca


2008/8/26 John Erling Blad <john.erling.blad@jeb.no>
If someone edits an an article, is pretty new and the WikiTrust system
colors his edits in red, then no one else is editing that particular
article for several years, will the coloring change according to any
trust the contributor gain or is the trust coloring of the article
locked to his trust at the given moment in time?

As I recall, the trust for older contributions are a kind of sticky to
the trust at that earlyer moment?

John

Luca de Alfaro skrev:
> As some of you might remember, we have been working on author
> reputation and text trust systems for wikis; some of you may have seen
> our demo at WikiMania 2007, or the on-line demo
> http://wiki-trust.cse.ucsc.edu/
>
> Since then, we have been busy at work to build a system that can be
> deployed on any wiki, and display the text trust information.
> And we finally made it!
>
> We are pleased to announce the release of WikiTrust version 2!
>
> With it, you can compute author reputation and text trust of your
> wikis in real-time, as edits to the wiki are made, and you can display
> text trust via a new "trust" tab.
> The tool can be installed as a MediaWiki extension, and is released
> open-source, under the BSD license; the project page is
> http://trust.cse.ucsc.edu/WikiTrust
>
> WikiTrust can be deployed both on new, and on existing, wikis.
> WikiTrust stores author reputation and text trust in additional
> database tables.  If deployed on an existing wiki, WikiTrust first
> computes the reputation and trust information for the current wiki
> content, and then processes new edits as they are made.  The
> computation is scalable, parallel, and fault-tolerant, in the sense
> that WikiTrust adaptively fills in missing trust or reputation
> information.
>
> On my MacBook, running under Ubuntu in vmware, WikiTrust can analize
> some 10-20 revisions / second of a wiki; so with a little patience,
> unless your wiki is truly huge, you can just deploy it and wait a
> bit.
> Go to http://trust.cse.ucsc.edu/WikiTrust for more information and for
> the code!
>
> Feedback, comments, etc are much appreciated!
>
> Luca de Alfaro
> (with Ian Pye and Bo Adler)
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Wikiquality-l mailing list
> Wikiquality-l@lists.wikimedia.org
> https://lists.wikimedia.org/mailman/listinfo/wikiquality-l
>

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