As we know, the 1st generation search engines are recognized as indexing search engines or directories. Users can use keywords, but that is really 'searching', no other development to decide the relevance of data. Directory is a really good idea and is invented by portal giant, Yahoo. In this generation, at lease users can find something from a huge set of data.
A look inside the Google's London store
The 2nd generation which is the current generation is known as the core technology and also a great example would be Google's powerful PageRank. PageRank is actually a set of formulas and equations which determines the relevance and reliability of every webpage for every keyword. Users can find the most relevant and reliable data almost instantly. Furthermore, Google is famous for its indexing engine because we can search over 1 billion webpages in less than 0.1second.
In the 3rd generation of search engines, machines will collect our searches and analyze them. For example, we will tell the search engine what we click, how long we stay and how many pages we view. These actions will be able to be understood by the 3rd generation search engines and they will use them to improve the result for the next user who wants to find answer to similar term.
Currently, Snap.com is one of the first 3rd generation search engines out there. It is project developed by idealab. Snap.com uses the searches made by users (besides the essential function of a typical search engine) there is also a tracker inside it and this might secret recipe of 3rd generation search engines.
Finally, can you still remember we told you about Google Panda updated version 2.5? This search engine is going to arrive this week. It is not rumor; it was confirmed by Search Engines Land (http://searchengineland.com/) Would you try the differences between the previous version and the update version? If you have any question or suggestion, you can comment it and let us do some improvement for you.
REFERENCES
Zhou Tong, Professional Web Developer (PHP, Ruby on Rails and MySQL), website designer (XHTML/CSS), Internet analyze and a professional tech blogger, Retrieved 25 May 2009
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