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Subject Gateway sites and PR

A paper by Mike Thelwell

   
10:22 am on Jul 17, 2002 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member



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 Jul 17, 2002 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member



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 Jul 17, 2002 (gmt 0)

WebmasterWorld Senior Member woz is a WebmasterWorld Top Contributor of All Time 10+ Year Member



>cant find a direct link.

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

Onya
Woz

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

WebmasterWorld Senior Member 10+ Year Member



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

WebmasterWorld Senior Member 10+ Year Member



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

10+ Year Member



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 Jul 17, 2002 (gmt 0)

WebmasterWorld Senior Member woz is a WebmasterWorld Top Contributor of All Time 10+ Year Member



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

Onya
Woz

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

WebmasterWorld Senior Member jdmorgan is a WebmasterWorld Top Contributor of All Time 10+ Year Member



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 Jul 17, 2002 (gmt 0)

10+ Year Member



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

10+ Year Member



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 Jul 18, 2002 (gmt 0)

WebmasterWorld Senior Member woz is a WebmasterWorld Top Contributor of All Time 10+ Year Member



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 Jul 18, 2002 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member



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 Jul 18, 2002 (gmt 0)

10+ Year Member



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

WebmasterWorld Senior Member jdmorgan is a WebmasterWorld Top Contributor of All Time 10+ Year Member



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

Jim

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

WebmasterWorld Senior Member 10+ Year Member



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