Knowra Colon Classification Colon Classification Colon Classification is a faceted library classification system developed by S. R. Ranganathan. Its notation combines symbols for facets to express a document’s specific subject and relationships among its parts.
Facet analysis : The process of dividing a subject into distinct aspects, or facets, for classification or retrieval. Colon Classification begins by identifying a work’s facets before arranging them in notation.
S. R. Ranganathan : An Indian mathematician and librarian who developed Colon Classification and shaped modern library science. He designed the system and its theory of faceted subject analysis.
Five Laws of Library Science : Five principles formulated by Ranganathan to describe the purposes and responsibilities of libraries. The laws express the service-centered outlook accompanying his classification work.
Special library : A library serving a focused subject area, organization, or professional community. Specialized collections were a natural setting for detailed faceted subject representation.
Fundamental categories : Ranganathan’s broad categories—Personality, Matter, Energy, Space, and Time—used to analyze subjects. These categories provide the basic kinds of facets that Colon Classification organizes.
Library classification : The organization of recorded knowledge into classes to arrange and retrieve library materials. Colon Classification is one system within this broader practice.
Library science in India : The academic and professional study of libraries and information services in India. Colon Classification emerged from Ranganathan’s work in Indian libraries and education.
Library catalog : An organized record of a library’s holdings, designed to support discovery and access. Class numbers can place cataloged works by their compound subjects.
PMEST formula : A sequence of Personality, Matter, Energy, Space, and Time used to arrange facets in a subject. The formula specifies the usual order of fundamental categories in a class number.
Subject indexing : The assignment of terms or codes representing a document’s subject for organized retrieval. Its subject analysis shares the aim of representing what a document is about.
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