Google and latent semantic analysis
Rumor in search engine forums has it that Google is giving more
weight to latent semantic indexing (LSI) in its latest ranking
What is latent semantic indexing?
LSI means that a search engine tries to associate certain terms
with concepts when indexing web pages. For example, Paris and
are associated with a woman instead of a city and a hotel, Tiger and
Woods are associated with golf.
Google has been using this concept to determine suitable ads for its
AdSense service for some time now. It seems that Google is now also
using this concept to improve the quality of its search results.
If you search for a keyword on Google and add a tilde ~ before the
search term, then you get an idea of what Google thinks about a search
For example, if you do a semantic search for phone, Google returns
Nokia as the first result. A normal search for phone returns different
results. Adding a tilde to the search term seems to instruct Google to
do a semantic search.
Why is this important to your SEO activities?
If Google uses this concept in its ranking algorithm (which is very
likely) then its advisable that you don't focus on a single
keyword, but on a set of related keywords with your search engine
You should optimize some of the pages on your web site for keywords
that are synonymous with the keyword you're targeting.
When you exchange links with other web sites, make sure that you vary
the link text to your web site so that it contains different
variations and synonyms of your keyword.
Where can I find further information about LSI?
If you're interested in the theories behind this concept, the
following pages can give you detailed information:
Latent semantic indexing helps search engines to find out
what a web page is all about. It basically means to you that you
shouldn't focus on a single keyword when optimizing your web pages and
when getting links.
The web pages on your web site should be related and focus mainly
on a special topic while using different words that describe the
topic. Use variations of your keyword and synonyms. That makes it
easier for search engines to determine the topic of your site.
Tools that help with website promotion...
Search engine news of the week...
Google has updated its index again!
"With any change, there are going to be some sites that move into
the first search page and some sites that move out. That's the reality
of any change in search engine results."
Editor's note: If you want to adjust your web pages for Google's new
ranking algorithm, take a look at
IBP's Top 10 Optimizer. Its advice is always up-to date because
it's based on the analysis of the current top 10 rankings.
Remember, latent semantic indexing helps search engines to find
out what a web page is all about.