Indexing - information retrieval, Management Information Sys

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.  

Posted Date: 10/25/2012 1:41:33 AM | Location : United States







Related Discussions:- Indexing - information retrieval, Assignment Help, Ask Question on Indexing - information retrieval, Get Answer, Expert's Help, Indexing - information retrieval Discussions

Write discussion on Indexing - information retrieval
Your posts are moderated
Related Questions
Question 1: (a) List the five types of Feasibility Studies that should be effected for all types of MIS projects. (b) In which conditions is the evaluation of alternative so

Question 1: (a) Describe the Business Process Reengineering concept and explain how redesigned business processes and Enterprise Systems are related. (b) Explain the differe


Stages in System Development Information professionals are mostly concerned with the first situation. In this context, the emphasis is on the systems requirements specificatio

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

Question: (a) How the harnessing of Information Systems impact on organisations. (b) How can m-Commerce be useful in the provision of Government services to citizens. (c


Take two different MISs from the current business world as examples and compare the differences to show how organization to organization MIS differs. Propose a MIS for a company

Structure of an information System An information system may be viewed as indicated in the Figure 1. Information systems accept (input), store (in files or database), and displ

Question : i) What is Business Process Reengineering and describe its relevance to an organization. ii) What are Net marketplaces and explain how do they operate iii) Wha