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How does Related Search Work?

         

SlyOldDog

5:29 pm on Mar 12, 2004 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member



Does anyone have detailed info on how the google related: search works?

My site is showing up linked to Nasa! We are a hotel company.

There is a serious side too. Google seems to be grouping related sites together so they don't show up in the same SERPS.

Stefan

12:43 am on Mar 13, 2004 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member



The Googleguide has some info [googleguide.com...]

There seems to be a "secret sauce" factor involved:

selected these sites by considering many factors

There are posts kicking around here somewhere also, that explain it as, "if A and B link to C, then A and B are similar pages", or something like that... might have that mixed up.

SlyOldDog

11:21 pm on Mar 13, 2004 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member



I saw that one. It was something like "if A links to B and C, then B and C are deemed similar".

I am a bit worried about this feature. An associate of mine never sees his page in the same SERPs as mine even though we don't link to each other. The pages are on similar topics and should show up in the same SERPs.

A related: search of his site shows many of the sites in my network most of which are not on his topic. This leads us to think that Google has somehow merged his site and our site(s) in their index. And furthermore that they now consider them too similar to list in the same SERPs.

This is obviously a concern for those of us who maintain more than one site on a topic even if we promote them independently. Somehow Google may connect them together and render the second site impotent.

doc_z

9:34 am on Mar 14, 2004 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member Top Contributors Of The Month



There are posts kicking around here somewhere also, that explain it as, "if A and B link to C, then A and B are similar pages", or something like that... might have that mixed up.

It was "if A links to B and C, then B and C are similar pages".

What are the returns for "Similar Pages" [webmasterworld.com]

Stefan

2:20 pm on Mar 14, 2004 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member



I was close.... :-)

glengara

6:06 pm on Mar 14, 2004 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member



"Similar Pages" isn't working too well these days, while they seem aware of the overall site linkage, they seem unable to determine the correct pages to return.

So a page on Directories returns pages on SEOs, and a page on SEOs, Directories.

rfgdxm1

6:21 pm on Mar 14, 2004 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member



>"Similar Pages" isn't working too well these days, while they seem aware of the overall site linkage, they seem unable to determine the correct pages to return.

Yep. For one of my sites some showing up as "Similar Pages" to the home page I can't figure out why they are showing. Different languages, no common linkage I can spot, etc. My guess is very few Google users ever click on that, and getting this right isn't a Google priority.

SlyOldDog

1:29 pm on Mar 16, 2004 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member



On the contrary, I think google is using it as a factor in the ranking algorithm.

i.e. Related sites won't be listed together high in the same SERPS.

glengara

1:45 pm on Mar 16, 2004 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member



Care to elaborate, SOD?

SlyOldDog

2:11 pm on Mar 16, 2004 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member



Sure. I have a number of sites on similar/same topics where only one will appear in the SERPs for any particular query (at least for competitive queries).

For example, if I search for "keyword1 keyword2" then site A appears somewhere in the top 10. If I search for "keyword2 keyword1" site B appears.

The same 2 sites don't show up anywhere together for competitive keyword searches. One site is always relegated to the low part of the top 100.

I have been trying to find an explanation, and I can only find 2.

1) Google's algorithm can pick out similar content in a very sophisticated way. Perhaps Latent Semantic Indexing. This is a distinct possibility since our sites are similar in the on page semantics, but the prose is completely different. This would seem to rule out LSI.

2) They are using a map of the links between sites in the index to group sites into similar topics, and they prefer not to list similar sites together close in the SERPs for any particular query. This is also quite possible as one of the sites affected is on a distantly related topic and uses unrelated semantics to the other sites apart form the main keywords.

johnser

3:04 pm on Mar 16, 2004 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member



>>>Google's algorithm can pick out similar content in a very sophisticated way. .... This is a distinct possibility since our sites are similar in the on page semantics, but the prose is completely different.

Have been thinking the same. But how can anything other than a human be able to work that out. Spotting themes by algo is one thing but if the prose is completely different?

Do we know if LSI can get this level of sophistication?
Is it the imapct of links in some way?
J

glengara

3:58 pm on Mar 16, 2004 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member



Sly, another possibility is that your similar topic sites are, through their linkage, seen as "affiliated", which in a Hilltop/Localrank type scenario can get them excluded from the calcs.

Johnser, IMO determining page topic without relying on KWs is the main goal in the use of Semantics by G, doubt if we're near to that yet though....

SlyOldDog

12:37 pm on Mar 17, 2004 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member



Hi Glengara

What sort of checks would Google to to spot affiliate sites?

We are not an internet affiliate in that we provide our own products, but our sites obviously need to link to each other and enivitably with quite a few sites, we will eventually leave a trail for Google to follow.