What are the main goals of information retrieval technique?

Information retrieval technique has been widely used nowadays due to the abundantly produced data produced everyday from sources such as social networking sites, speeches, articles etc. Despite knowing the reason of such use, there are many motives of using such technique. Some of them are

a) To reduce the time of processing information

b) To reduce human effort of tackling huge data

c) To increase the efficiency of data preprocessing.

d) To easily distribute information into various sectors.