Abstract –
The process by which information is retrieved from
the repositories is called as information retrieval. This process
had been a manual process since many centuries but since the
advent of computers since the past few decades, it has become
automated. Certain models form the basis of information
retrieval in automated systems and are categorized as
conventional and unconventional. This is because the motive of
information retrieval systems is not only to render information
to the regular users of internet but also, help the novice users of
internet to skim out the documents that they need.