Functions of an information retrieval system, Management Information Sys

Functions of an IRS 

Information Retrieval (IR) is best understood if one remembers the information being processed consists mainly of documents. In that context, IR deals with representation, storage and access to documents or information surrogates. In other words, the input information is likely to include natural language text or document excerpts and abstracts. The output of an IRS in response to a search request consists of sets of references. These references are intended to provide the system users the information about the items of interest to them.    

Usually, an IR system is considered to have the function of "leading the user to those documents that will best enable him/her to satisfy his/her need for information" [Lancaster, 1979 Lancaster indicates the major functions of an Information Retrieval System through the enclosed diagram.  

2235_functions of information retrieval system.png

It may be mentioned here that the information to be stored is often available in the form of natural language texts, and the mechanisms used to represent the texts include both controlled and uncontrolled vocabularies which separately or in combination constitute the 'indexing language. The indexing process transforms the natural language text of the information into elements of the indexing language, and. the search formulation process converts statements of information need into elements of the same indexing language. The identification of information items to be retrieved then depends on the item representations rather than the original natural language texts of the items. The organisation of the items in the file has a great deal to do with efficiency of search and retrieval. 

Posted Date: 10/24/2012 3:12:50 AM | Location : United States







Related Discussions:- Functions of an information retrieval system, Assignment Help, Ask Question on Functions of an information retrieval system, Get Answer, Expert's Help, Functions of an information retrieval system Discussions

Write discussion on Functions of an information retrieval system
Your posts are moderated
Related Questions
QUESTION 1 There are three main objectives in Information Warfare. What are they? QUESTION 2 Boisot defines a basics model about Data, Information & Knowledge in Inform

Question: (a) (i) List down common network topologies. (ii) With the help of a diagram, explain each topology. (iii) Write down a disadvantage for each topology. (b) A

I have a test that''s gonna look like the test I''m taking tomorrow morning so I''ll need everything solved and answered asap

Current Awareness Services   Current Awareness Services are those services whose primary objective is to keep information users abreast of developments and advances taking plac

Question : a) Explain the major types of information systems used in an organisation. Show each one with relevant examples. b) "Enterprise Resource Planning (ERP) implemen

Question 1: The field of electronic document management (EDM) is an integral part of information management in organizations. Discuss the major improvements that EDM is bringin

Circulation Control System   The circulation control system is one of the important components of any library system. The primary function of any circulation control system is


unions tie the hands of management and inhibit efficient decision making

Question: (a) A large multinational is planning to implement a new Information System which will integrate all operations involved at its head-quarters and fourteen branches ou