Mean Average Precision (MeanAP)

Mean Average Precision: average over queries of the average precision value.

• Inputs: list of lists of retrieved items, list of lists of ground truth items
• Returns: mean average precision (float)

Example

from vero.metrics import MeanAP

#example inputs
#rr is the reranked results from the retriever
#gt is the ground truth relevant items for each query
rr = [[1,2,3,5,6],[1,2,3,5,6]]
gt = [[2,3,6],[2,3,6]]
map = MeanAP(rr, gt)
print(map.evaluate())

Output

0.78