Apart from understanding the models of the various web
searches, it is also significant for us to find out the places where
each model can be more useful as compared to the other models.
This implies that before incorporating the models of information
retrieval in our automation systems, we should find out which
model suits our requirement in the best possible manner. This can
be known only after knowing the characteristics of the end-user
[3] and the parameters of measuring the performance of the
various search engines [2][4]. The study of the end user varies
based upon the search environments provided by the various
search engines [3]. Only when a programmer is able to
understand the demands of his user, he becomes able to design a
system that would be best suitable to serve his needs.