4.3.5 Others search engine Internet coverage

“This part needs additional information and improvements and is then not finished
yet.”
You have a last category of search engine which are the one coming from the
semantic web concept which are not based on keywords requests. I found one of
those which is called « Who is like it » and gives as results websites similar to the
one you just gave him.

Illustration 13: “Who is like it” search engine

Of course solutions have been found in order to create the perfect search
engine including all those technologies. But as you can imagine it is not an easy
thing if firstly search engines did not take the same standards as Boolean operators.
Secondly the more search engine you combine the more results you will get and it
then very complicated to decide which one is more pertinent than the other.
A good example of it is the meta search engine called Dogpile which is quite
popular in the United States it combines the results of 4 big search engines which are
Google, Yahoo, MSN live search and Ask. The main problem is already showed on
the advanced search web page of Dogpile, few are the Boolean operators limited to
4.

Illustration 14: Dogpile meta search engine

The second issue which is relevant is how to decide which results from those
search engines are the most relevant. I showed you previously that when making a
comparison between Google and Yahoo I found what I wanted on Yahoo on the 8th
position. So it is hard to decide which result is the most relevant and to this game you
are the only judge of the situation.
So the hypothetical search engine should have the following characteristics:
including all the technologies ever created regarding search engines (Google's
knowledge+Yahoo knowledge+MSN knowledge+...) in order to define the most
powerful algorithm ever. All those companies have of course different objectives
than being the most rational search engine all are looking to be the number one. This
day will may come but it will not be for sure for tomorrow so waiting for it we
should understand how to use one by one all those technologies.
The solution being then to test the search engines one by one but
before testing all of them you have to know that they exist and how to use them but you should at least to know that they exist.