Latent Semantic Indexing & Co-Occurrence

admin
Categories: Adwords, Google, LSI & Co-Occurrence, PPC, Paid Search, Research & Findings, SEO Spottings, Synon.*

Recently, I made a few discoveries while digging around on Google. Shall we draw conclusions from the following?

Googles Semantic Weave

Google's Semantic Weave

Co-Occurrence Coupled with LSI

A Little Co-LSI?

LSI and Paid Search May Not Play Well Together

Adwords and LSI - A Bit of a Reach?

So here we have some root tokens at work, as evidenced by the truncated string matching that has taken place. Google clearly groups discreet strings from the general English lexicon, but in exactly what capacity, it would be difficult to determine. In situations where there are no exact string matches, Google has delved into not only the root pile but a matrix of co-occurring strings which cross-match within the root pile to locatd combinations of root-derived strings that co-exist on pages and satisfy my less-than-likely search.

Yahoo! and Bing return vastly different results. While Bing associates “CNG” with “Compressed Natural Gas” and highlights both terms within its results, Yahoo! does not seem to make the same association. Bing returns the first result with an exact match for “CNG veh” and Yahoo! does so with its second result. Both search engines return matches that tend to occur in non-HTML documents. Neither return token or root matches. Yahoo! suggests that I “Also try: cng veh in” as a search. Bing makes no suggestions.

Google associates computers and competition with the “comp” in the query “comp nat gas,” but fails to associate the more obvious “compression” or “compressed”. Four of the first 10 results for “comp nat gas” actually contain the word “compression” without highlighting, which seem to indicate, that though the term is present, there is not a strong enough association to merit confidence.

There are instances within results where associative confidence is present only in certain sections of the results content. Check out the bottom-of-page results for “cng veh” where Google highlights the Honda NGV in it’s similar searches, and twice fails to highlight “cng” which was actually a string in my query!

Google's Associations with High Blood Alchohol

Loose Associations: Google

Any qualified takes on these discoveries are mighty welcome.

My theory is that these are perhaps some of the common roots at play in the associative partial-word substitutions seen in the examples above. Is it possible that there is some more-loosely-constructed means to determine the substituted words – one which does not rely on a defined lexicon and a matrix of lexical roots? Is this result of some substring or back tracking function in tandem with co-occurrence probabilities?

VN:F [1.7.0_948]
Rating: 0.0/10 (0 votes cast)
VN:F [1.7.0_948]
Rating: 0 (from 0 votes)
Share and SEOgOES:
  • Print
  • Digg
  • Sphinn
  • del.icio.us
  • Facebook
  • Mixx
  • Google Bookmarks
  • Blogplay
  • FriendFeed
  • LinkedIn
  • Ping.fm
  • RSS
  • Slashdot
  • StumbleUpon
  • Technorati
  • Twitter
  • Yahoo! Bookmarks
  • Yahoo! Buzz
Blog Traffic Exchange Related Websites
Oct
10

Leave a Reply

  • Recent Posts

  • Tweet

  • RSS SEM News

    • The Impact of Aesthetics on Attitudes Towards Web sites
      A user's perception of a Web site can evoke a wide range of emotions and attitudes. These emotions and perceptions impact the user's attitude towards the Web site's content, advertised products, company, credibility and site usability. […]
    • Diagrams for Solving Crawl Priority & Indexation Issues
      Posted by randfishYesterday night I stayed up way too late authoring a post on Google's Indexation Cap. Today, despite getting up way too early, I wanted to follow up and answer some of the questions from the comments, Twitter and my email. I think SEOs who read the post rightly asked for more direction in solving this problem - a fair request. Below, I […]
    • 90-Minute PRO Webinar: Link Building Strategies on Thursday Dec. 10th
      Posted by randfishThanks so much for all your votes and feedback on our PRO Webinar Series over the holiday weekend. We received 285 responses and we're taking your suggestions very seriously and conducting the webinar as you've requested :-) Here are the stats from the questionairre/form (you can still fill it out if you'd like to give more i […]
    • Google's Indexation Cap
      Posted by randfishOver the past 2 years, SEOmoz has worked with quite a number of websites whose primary goal (or primary problem) in SEO has been indexation - getting more of their pages included in Google's index so they have the opportunity to rank well. These are, obviously, long tail focused sites that earn the vast majority of their visits from qu […]