Information Retrieval Questions
Reciprocal rank (RR) is an evaluation measure used in information retrieval to assess the effectiveness of a search engine or ranking algorithm. It is calculated as the reciprocal of the rank of the first relevant document retrieved by the system. In other words, if the first relevant document is ranked at position "k," the reciprocal rank is 1/k. The RR measure gives higher scores to systems that retrieve relevant documents at higher ranks, indicating better performance in terms of retrieving the most relevant information.