a)The Boolean model:Basically the Boolean model is a conventional model that
works with the underlying principle of finding the document
matching the exact terms of the query [1][10]. The Boolean
model does not perform partial matches. We can understand
this by the concept of 1s and 0s as followed in the Boolean
algebra – either yes or no, or, in other words, either a
document of exact match is found or it is not found. This may
work out to a great extent for those who are adept at the usage
of information retrieval systems, but it may possibly not be
good for those who are new to the use of computers or