Parshi Ayo
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Library Science 2026
Digital
Library
Database
1. Introduction
Option A
Bradford's law
🔑
Key Points
Bradford's law
Bradford's Law, formulated by Samuel C. Bradford in
1934
, describes the diminishing returns when searching for references in science journals.
According to one version of the law, if you group journals in a field into
three segments
, each containing roughly one-third of all articles, the number of journals in each segment follows a proportional pattern of
1:n:n².
It is also called as
Law of scattering
as it describes how the articles on a particular subject are scattered throughout the mass of periodicals.
Lotka's Law:
📑
Additional Information
Other Canons of Characteristics
Canon of Relevance
The chosen attribute must be
relevant
to the objective of the classification or study.
For example, when classifying students for scholarships,
grades
or
financial status
are relevant attributes.
Canon of Permanence
This ensures that the attribute chosen for classification is
relatively stable
over time.
For example, attributes like
gender
or
educational qualification
are considered permanent compared to temporary factors like "current mood."
Canon of Differentiation
The attribute should allow for
clear distinction
between groups or classes.
For example, using distinct age groups like "under 18", "18-35", and "above 35" ensures differentiation.
Importance of Objective Attributes
Using
objective
and measurable attributes enhances the
accuracy
of analysis.
It reduces the chances of
bias
or misinterpretation in data classification.
Answer-A.1
Option B
Answer-B
Option C
Answer-C
2. Functionality
Option A
Answer-A
Option B
Answer-B
Answer-B.1