Information Retrieval Questions
Precision-recall at k (PR@k) is an evaluation measure used in information retrieval to assess the effectiveness of a search system. It measures the precision and recall of the top k documents retrieved by the system. Precision is the proportion of relevant documents among the top k retrieved documents, while recall is the proportion of relevant documents retrieved out of all the relevant documents in the collection. PR@k provides a way to evaluate the trade-off between precision and recall at a specific cutoff point, k.