Wednesday, August 31, 2011


Difference between Information Retrieval and Database Retrieval is
* in DB the query result must have 100% Precision and 100% Recall whereas in IR it has to be a balance of the two to be acceptable.
* all the results of DB query any addition or removal of entries from the result set would make the result incorrect, whereas in IR to overcome the errors in result set it generates ranking to represent relevance of each entry.