Abstract
Purpose – To suggest that a theory of classification for information retrieval (IR), asked for by
Spa¨rck Jones in a 1970 paper, presupposes a full implementation of a pragmatic understanding. Part of
the Journal of Documentation celebration, “60 years of the best in information research”.
Design/methodology/approach – Literature-based conceptual analysis, taking Spa¨rck Jones as its
starting-point. Analysis involves distinctions between “positivism” and “pragmatism” and “classical”
versus Kuhnian understandings of concepts.
Findings – Classification, both manual and automatic, for retrieval benefits from drawing upon a
combination of qualitative and quantitative techniques, a consideration of theories of meaning, and the
adding of top-down approaches to IR in which divisions of labour, domains, traditions, genres,
document architectures etc. are included as analytical elements and in which specific IR algorithms are
based on the examination of specific literatures. Introduces an example illustrating the consequences
of a full implementation of a pragmatist understanding when handling homonyms.
Practical implications – Outlines how to classify from a pragmatic-philosophical point of view.
Originality/value – Provides, emphasizing a pragmatic understanding, insights of importance to
classification for retrieval, both manual and automatic.
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