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Jovita Kaur, Lovely Professional University Unit 10: Pre-coordinate, Post-coordinate and Citation Indexing

Notes
Unit 10: Pre-coordinate, Post-coordinate and

Citation Indexing

CONTENTS

Objectives
Introduction

10.1 Pre-coordinate Indexing Systems

10.2 Post-coordinate Indexing System
10.3 Citation Indexing

10.4 Development of Indexing Concept
10.5 Summary

10.6 Keywords
10.7 Review Questions

10.8 Further Readings

Objectives

After studying this unit, you will be able to:
• Explain pre-coordinate indexing systems
• Describe post-coordinate indexing systems
• Define citation indexing
• Explain development of indexing concept.

Introduction

Now a days most of the documents deal with complex and compound subjects, each comprising a
number of components or concepts. The coordination of these component terms is either done at the
input stage or at the output stage. The index in which the coordination of components (index terms)
is done at the input stage, is known as pre-coordinate index. Coordination of index terms at the input
stage means coordination of index terms at the time of preparation of the index by the indexer. In pre-
coordinate indexing a number of selected terms or keywords are coordinated by the indexer and the
cards are prepared for display to the users.
Examples: Ranganathan’s Chain Indexing, G. Bhattacharya’s POPSI and Derek Austin’s PRECIS,
COMPASS, etc.

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