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Subject Gateway sites and PR

A paper by Mike Thelwell

     
10:22 am on Jul 17, 2002 (gmt 0)

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A paper I came across, cant find a direct link.

"Title"
Subject gateway sites and search engine ranking

"Journal"
Online Information Review, Vol 26, Issue 2

"Abstract" (not sure about posting this, oh well)
The spread of subject gateway sites can have an impact on the other major Web information retrieval tool: the commercial search engine. This is because gateway sites perturb the link structure of the Web, something used to rank matches in search engine results pages. The success of Google means that its PageRank algorithm for ranking the importance of Web pages is an object of particular interest, and it is one of the few published ranking algorithms. Although highly mathematical, PageRank admits a simple underlying explanation that allows an analysis of its impact on Web spaces. It is shown that under certain stated assumptions gateway sites can actually decrease the PageRank of their targets. Suggestions are made for gateway site designers and other Web authors to minimise this.

12:10 pm on July 17, 2002 (gmt 0)

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It is shown that under certain stated assumptions gateway sites can actually decrease the PageRank of their targets. Suggestions are made for gateway site designers and other Web authors to minimise this.

Heh. What the heck does "Gateway Guy" care about the other site's PR?

I've been getting a lot of this lately. I currently have about 130 pages in the Zeal directory (i.e. The Looksmart Directory). In addition to MSN now outperforming Google by about 10 to 1 for traffic, I'm getting the occassional hit (10 a day or so) from little portal sites that mirror the L$ directory. Unfortunately, several of these sites are PR0 or PR1 up front and 99% are PR1 as deep as the results pages I'm shown on.

Unfortunately, there isn't a heck of a lot I can do about this without just yanking my pages out of Zeal. I'd hate to imagine that Google would slap a major penalty on me for being listed at L$, but you never know. (And, it's way too soon for me to see what the exact effect will be - time will tell. It also kills).

G.

Woz

12:28 pm on July 17, 2002 (gmt 0)

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>cant find a direct link.

[url=es.geocities.com/scienceofinformation_dc/Documentos/OnlineInformation/p101.pdf]PDF Only[/url]

Onya
Woz

12:42 pm on July 17, 2002 (gmt 0)

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Woz, I think that site just got WebmasterWorlded - it's exceeded its traffic quota :-)
12:43 pm on July 17, 2002 (gmt 0)

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It works with the http removed??? - or maybe I just got lucky
12:50 pm on July 17, 2002 (gmt 0)

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Looks like too many of us tried to get it at once...

La página web a la que está intentando acceder no existe en Yahoo! GeoCities.
[es.geocities.yahoo.com...]
Si sigue teniendo problemas, visite nuestra área de ayuda para obtener información y auxilio.

Woz

1:24 pm on July 17, 2002 (gmt 0)

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Well, as I always say, "The Power of a Link!"

Onya
Woz

11:02 pm on July 17, 2002 (gmt 0)

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Interesting... The link to the html page above that pdf document works fine, and from there you
can load the pdf file. I never realized that geocites sites could be set up to check and block
by {http_referer} !

<off to read the paper - looks good so far!>

Jim

11:23 pm on July 17, 2002 (gmt 0)

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yes, just remove the "http://" and hit return and it will work just fine. ;)
1:11 am on July 18, 2002 (gmt 0)

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I can't see the article even when removing the http://

"The web page you are trying to access doesn't exist on Yahoo! GeoCities."

Can someone sticky the article to me?

Woz

1:34 am on July 18, 2002 (gmt 0)

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Hmmm, interesting.

go here [es.geocities.com] and then click on the 4th link under "Artículos:"

There seems to be some traffic congestion there so if you get an error message just wait a little while and try again.

Onya
Woz

2:19 am on July 18, 2002 (gmt 0)

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A major practical problem with continuing the voting indefinitely is that all sites that host links will expend any votes garnered on them and may eventually run out and be unranked. In response to this, new votes can be continually added to the system...

In reality, the received and given votes in each iteration of the PageRank calculation are completely independent of each other. A page cannot "expend its votes" and lose its own ranking because of that. Therefore there is no need to "add new votes" to the system, and no reason why Google would do so.

They suggested the figure of 85 percent, so that at any voting stage at each URL, 15 percent of its votes would be allocated to its link targets and 85 percent were distributed evenly to all URLs in the system.

In reality, the Google algorithm distributes 85 % of the PageRank of each page between its link targets, and drops the rest, instead of "distributing it evenly" to all others.

I read through the paper very quickly, so I assume those are only the most obvious and glaring of its errors. Personally, I wouldn't base my promotion strategy on its conclusions just yet...

4:19 am on July 18, 2002 (gmt 0)

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Here is a mirror [bunchajerks.com] for those having trouble connecting to the main pdf.
6:05 am on July 18, 2002 (gmt 0)

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PR afficianados,
Make sure you follow the reference to the paper by C. Ridings. Definitely worth a read.

Jim

6:24 am on July 18, 2002 (gmt 0)

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I'm with bird - I don't think much of that paper at all, its explanation of PageRank is confused at best.
 

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