202602250155
Status: #idea
Tags: Information Retrieval
State: #nascient
R-Precision
This is a specification of the Precision (1-false discovery proportion) used in Information Retrieval systems. Basically, it is the computation where the cutoff is chosen as the known number of relevant documents.
If we know a document corpus contains 20 documents, our precision will have denominator of 20 irrespective of how many documents the system actually retrieved.
This allows us to have a global view of the performance of the system relative to the known number of documents within it.