Information Retrieval Questions
Precision at k (P@k) is an evaluation measure used in information retrieval to assess the relevance of the top k documents retrieved by a search system. It measures the proportion of relevant documents among the top k retrieved documents. The formula for calculating P@k is:
P@k = (Number of relevant documents in the top k) / k
A higher P@k value indicates a higher precision, meaning a higher proportion of relevant documents among the top k retrieved.