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: a) "Many organisations have been using the Internet, Intranet and Extranet to realise strategic gains in their competitive position. To achieve and maintain such a

Successful firms carefully balance Business Strategy, Organizational Strategy and Information Strategy to gain competitive advantages over other competitors. Market forces create t


Steps in System Analysis  The following are the steps involved in systems analysis:  Define the system (definition of the system) including its scope;  Analyse the ope

the tasks that costco must accomplish for each primary value chain ctivity

Retrieval Capabilities   The third aspect of importance in any Information Storage and Retrieval System relates to its retrieval capabilities. Retrieval process is the most imp


Problem 1: a) What do you understand by the term "Interactivity"? b) What is meant by the terms Multimedia and Hypermedia? c) Explain what is a ‘Storyboard' and why is


Question 1: (a) Identify and briefly describe the steps of the prototyping process. Discuss the advantages and disadvantages. (b) Show five key applications of e-business