homepage Welcome to WebmasterWorld Guest from
register, free tools, login, search, pro membership, help, library, announcements, recent posts, open posts,
Become a Pro Member
Visit PubCon.com
Home / Forums Index / Marketing and Biz Dev / SEM Research Topics
Forum Library, Charter, Moderators: phranque

SEM Research Topics Forum

These terms have been highlighted:
lsi [ remove highlighting]

LSI & Google
where is the link

 11:37 pm on Jun 8, 2004 (gmt 0)

There has been talk over the past few months about google using latent semantic indexing in thier algo and I've come to agree recently.
The part of the lsi process that I'm most interested in is the calculation of word cooccurance. lsi websites don't get into this much and I can't find any papers on it by googler's.
Can anyone point me in the direction of a paper or a recent tech company acquisition that connects google to lsi ideas.



 11:57 pm on Jun 8, 2004 (gmt 0)

Here's a few





Latent Semantic Analysis (again Telecordia)

Microsoft also


 2:25 am on Jun 9, 2004 (gmt 0)

Word co-occurrence - can you elaborate a little more? There may be something else out there that isn't called the same thing.


Here's one


This looks really good. Here's the HTML in the cache, but it's a PDF

Higher Precision for Two Word Queries


Constructing and Examining Personalized Cooccurrence-based Thesauri on Web Pages


That last one looks like hitting paydirt.


 5:19 pm on Jun 12, 2004 (gmt 0)

Is there any proof that the main search engines are using lsi?

I did some tests but from a brief overview, I do not think so.


 5:23 pm on Jun 12, 2004 (gmt 0)

I did some tests but from a brief overview, I do not think so.

Google certainly is.

Not sure about the others.



 5:59 pm on Jun 12, 2004 (gmt 0)

Do you have any data to proof this? I think that lsi really works when your document base is realativley small and non SEO'd.

When you run a search on billions of docs, keywords will take precedence. Considering the way documents are SEO'd today, lsi will not be of much use.

Searches on library books,articles/news,news groups are some what different though. Since the authors did not alter the keyword frequency and introduce semantically related words on purpose.

If there are 1000 documents SEO'd on the word printer, how can google decide to put a document related to ink or hp in it's SERP's when the other 1000 documents are more important to the person who is doing the search.

Can some one explain this to me?


 6:15 pm on Jun 12, 2004 (gmt 0)

ink or hp

According to Google, "inkjet" is semantically linked to "Epson" (12,500,000 pages).


Interesting, I didn't realise that semantics could extend to brandnames. Anyone else seen similar in google?

Also "discount" which doesn't really surprise me, but not a good example of effective sematic indexing.



 3:39 pm on Jun 13, 2004 (gmt 0)

~ does the tilde instruct google to do a semantic search?

Searching on phone with a tilde brings nokia in the 1st position. Without the tilde, the results are different.


 3:49 pm on Jun 13, 2004 (gmt 0)

Yes the tilde shows semantic keywords.

Another one - phone¦nokia


Very very interesting...



 8:42 am on Jun 15, 2004 (gmt 0)

Soda gets pepsi, cola and coke but not the coca in coca-cola.


 8:45 am on Jun 15, 2004 (gmt 0)

~mike ~tyson gets boxing. He's sort of a brand right?

I was really hoping to find Don King. lol.


 8:00 am on Jun 23, 2004 (gmt 0)

When I mentioned word cooccurance I meant that I am interested in the statistical threshold that will result in two words being tagged as similar.

In other words, how many times does a pair of words have to occur together on the web for google to deem the pair "related". From merely anctedotal observations it appears that level is relativly low and is dependant on the number of times the pair occurs in relation to the number of times the seperate words occur without eachother.

The result of a concrete knowledge of how google determines weather or not two words are related is the ability to manipulate "related word" recognization, adding a whole new level to google SEO.

Global Options:
 top home search open messages active posts  

Home / Forums Index / Marketing and Biz Dev / SEM Research Topics
rss feed

All trademarks and copyrights held by respective owners. Member comments are owned by the poster.
Home ¦ Free Tools ¦ Terms of Service ¦ Privacy Policy ¦ Report Problem ¦ About ¦ Library ¦ Newsletter
WebmasterWorld is a Developer Shed Community owned by Jim Boykin.
© Webmaster World 1996-2014 all rights reserved