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Reena Kapoor, Lovely Professional University Unit 6: Information Retrieval Model and Search Strategies

Notes
Unit 6: Information Retrieval Model and Search Strategies

CONTENTS
Objectives

Introduction
6.1 History of Information Retrieval Model

6.2 General Model of Information Retrieval

6.3 Search Strategies
6.4 Information Retrieval and Machine Learning

6.5 Information Retrieval Manual
6.6 Summary

6.7 Keywords

6.8 Review Questions
6.9 Further Readings

Objectives

After studying this unit, you will be able to:
• Define information retrieval model
• Define search strategies
• Describe information retrieval and machine learning
• Explain information retrieval manual.

Introduction

Information retrieval (IR) is the area of study concerned with searching for documents, for information
within documents, and for metadata about documents, as well as that of searching relational databases
and the World Wide Web. There is overlap in the usage of the terms data retrieval, document retrieval,
information retrieval, and text retrieval, but each also has its own body of literature, theory, praxis,
and technologies. IR is interdisciplinary, based on computer science, mathematics, library science,
information science, information architecture, cognitive psychology, linguistics, and statistics.
Automated information retrieval systems are used to reduce what has been called “information
overload”. Many universities and public libraries use IR systems to provide access to books, journals
and other documents. Web search engines are the most visible IR applications.

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