Who developed the idea of Facet Analysis ? 

The correct answer is ​S.R. Ranganathan.

Key Points

• Facet analysis, initially conceived by S.R. Ranganathan in the 1930s, drew upon earlier methods of subject classification and indexing, such as those by Henry Bliss, Paul Otlet, and Kaiser.
• Facet analysis means an analysis of a subject in its
  aspects obtained on the basis of a systematic application of a set of characteristics.
• Facet analysis of a subject results in the formation of groups of classes.
• Today, facet analysis is mainly employed to arrange physical documents or their surrogates in classifications.
• Facet analysis, according to Ranganathan, is the "Analysis of a subject into facets according to the postulates and principles stated for the purpose".
• In the words of Palmer and Wells it "...means the analysis of a specific subject into facets produced by the application of characteristics".

Additional Information

• James Duff Brown-​
  • James Duff Brown was a British librarian and educationalist.
  • He worked in the field of library classification to deal with the problem of the shelf arrangement of interdisciplinary works.
  • He wrote the book entitled "Manual of Library Economy" which was first published in 1903.
  • He was the pioneer of the open-access system in British Libraries.
• Melvil Dewey-
  • Melvil Dewey is known as the "Father of Librarianship".
  • He devised the Dewey Decimal Classification system for Library Cataloguing.
  • He established the "School of Library Economy" in 1887 at Columbia University.
  • He was the founding member of the American Library Association (ALA).​
• Henri La Fontaine-
  • He was a Belgian International lawyer and president of the International Peace Bureau.
  • He received the Nobel Prize for Peace in 1913.
  • He was the co-founder of the FID.