popsi

Library Academy

Pre-coordinate indexing: Chain Indexing, Relational, Coats, PRECIS, & POPSI

Pre-coordinate indexing is an information retrieval method where terms describing the content of a document are combined into a single, structured phrase or string at the time of ...

Library Academy

POPSI – Postulate-based Permuted Subject Indexing System

POPSI (Postulate-based Permuted Subject Indexing) was developed by G. Bhattacharyya in 1980. He created it by logically analyzing the deeper structure of subject indexing language (SIL). POPSI recommends ...