Information Retrieval Questions
The evaluation measure expected reciprocal rank (ERR) is a metric used in information retrieval to assess the effectiveness of a ranking algorithm. It calculates the average reciprocal rank of the documents in a ranked list based on their relevance to a given query. ERR takes into account both the position of the relevant documents in the list and their graded relevance, providing a more comprehensive evaluation of the ranking quality compared to other measures like precision or recall.