Documentation
Every number on POSI is produced by a published method from open data. These pages describe the methods, the data model and the rules for using the results.
Start here
What POSI is, what it is not, and what changed recently.
Data model
Fields, provenance, sources and how to read the files.
Collections
How journals enter each collection and how coverage changes.
Ratings & indicators
Lifecycle ratings, citation indicators and their methods.
Editorial selection
The PQF admission gate and the evidence behind it.
Governance
Responsible use, conflicts of interest and legal terms.