This study examines the contributions of Julius Otto Kaiser (1868–1927) to the consolidation of Subject Analysis, with particular emphasis on the method of Systematic Indexing and its epistemological, methodological, categorical and pragmatic dimensions. Although Kaiser is often acknowledged as a precursor of analytic synthetic approaches, his foundational role in the formalization of Subject Analysis as a structured method has remained, to date, largely underexplored.
This qualitative, theoretical-conceptual study is based on documentary analysis of Kaiser's works, especially Systematic Indexing (1911), and their critical reception in the specialized literature of Knowledge Organization. The analysis is complemented by a conceptual examination of the principles, categories and procedures that structure Systematic Indexing, within a historical-analytical framework.
The findings demonstrate that Kaiser was the first author to explicitly formulate Subject Analysis as a systematic method grounded in the articulation between analysis and synthesis, the decomposition of literature into units of information and their conceptual recomposition through thematic statements. His categorical structure – Concretes, Countries and Processes – establishes a conceptual syntax for compound subjects and anticipates core principles later developed in analytic-synthetic and faceted approaches. Systematic Indexing thus emerges as a fully theoretically informed method of Subject Analysis, formalizing thematic treatment as a cognitively, logically and pragmatically oriented process.
This study positions Kaiser's work as a foundational inflection in the genealogy of Subject Analysis, bridging descriptive bibliographic traditions and subsequent analytic-synthetic frameworks, with enduring implications for contemporary Knowledge Organization.
