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
Components of an IRS   Lancaster [1979] considers that an Information Retrieval System (IRS) comprises the following components:  i)  the document selection sub-system  ii


Current Lists: Current books - those that are published during the year - represent the majority of materials usually acquired by most libraries, although it may not always be

Printed indexes   One of the first applications of the computer to information retrieval was in the production of printed indexes. Computers were used, both for the preparation

Question: (a) Fincorp Ltd is an insurance company wishing to change over to a better business system using an improved version of a financial information system (FIS). The dire

Is it ethical for people in an organization to withhold information and not share it with other employees? Under what circumstances would it be acceptable not to share certain type

National Bibliographies: Ranganathan defines the term National Bibliography as "A list of books, periodicals, and of their reprographs published in a country or on the country

Hi I need the answers for the systems understanding aid 7th edition on warren company

IR System Evaluation   An attempt has been made to explain to you the concept of an IR System and its important components as well as functions. The discussion has particularly

QUESTION (a) Do ERP systems strengthen or weaken a corporate manager's control over operations? State your point of view also justify it with two appropriate examples (b) Ex