Indexing - information retrieval, Management Information Sys

Assignment Help:

Indexing

Indexing is the process of allocating index terms or keys to a record or document represented in an Information Retrieval System. Historically, the term indexing was applied to a human generated set of terms that could be used to locate an item (record or document). With the advent of computers and the availability of text in electronic form, alternatives to manual indexing are available and are essential to cope with the proliferation of information in the documentary form. Thus, automated techniques are absolutely necessary. In the case of manual indexing there are guidelines on the scope of indexing process. Such guidelines were necessary to ensure consistency as also to achieve the specific objectives of a particular indexing effort. The guidelines defined the level (depth) of detail to which the indexing was applied i.e.,  exhaustivity and specificity. The strength in manual indexing was the associative powers of human indexer in consolidating many similar ideas into a small number of representative index terms and knowing when concepts were of low value as not to warrant indexing. Automated indexing systems try to achieve these by using weighted and natural language systems and by concept indexing. It may be mentioned here that the reliance of automated systems on statistical information alone will not be able to achieve accurate assignment of importance and weights to concepts that are being indexed. Therefore, it is important to develop algorithms for automatic indexing. In other words, a computer can select index terms in accordance with a set of instructions. Selection will depend upon word occurrence. The index terms that may be assigned are drawn from a standard list or computerised thesaurus, on the basis of word occurrence in a record or document. An alternative method is to arrange manually assigned index terms alphabetically. Such terms will be selected and assigned by the indexers on the basis of indexer's subjective assessment of the content of the document. In either case, computer acts as a tellable tool for arranging as well as displaying of the index terms.  


Related Discussions:- Indexing - information retrieval

Various approaches to grievance resolution, Describe the meaning and Proced...

Describe the meaning and Procedure of grievance. Discuss various approaches to grievance resolution. In your opinion which approach is most effective and why? Explain with help of

Information system in management, Information System in Management An ...

Information System in Management An attempt has been made in this Unit to explain to you the concept of a system , particularly computer-based Information Storage and Retrieva

Network, Network Definition   "Whenever more than two units (e.g., pers...

Network Definition   "Whenever more than two units (e.g., persons, organisations, or computer terminals) are connected and share some attribute, a network is formed". This stat

What are group dss, Management Information System 1. Define MIS and its...

Management Information System 1. Define MIS and its objectives. What are the characteristics of MIS? 2. Explain data processing. 3. What are the recent developments in da

Information system, Discuss three (3) major challenges that typically user...

Discuss three (3) major challenges that typically users face in building and/or using information systems AND elaborate the ways to overcome those challenges

Assignment, Discuss the ethical and social issues in Information Systems fo...

Discuss the ethical and social issues in Information Systems for BMW cars

Compare and contrast the implementation strategies, Question: a) "Man...

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

What do you mean by various views of databas, What do you mean by various v...

What do you mean by various views of database ? Also give advantages and disadvantages of all views. Illustrate various terms of database also - data record, data file, data field,

Planning & development of MIS, WHAT IS THE PROCEDURE INVOLVED IN PLANNING A...

WHAT IS THE PROCEDURE INVOLVED IN PLANNING AND DEVELOPMENT OF MIS

Assignment, Choose an industry of your choice and evaluate the past and pre...

Choose an industry of your choice and evaluate the past and present state of MIS in an organization of the industry

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd