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Allow to return AP by class and mAP score #22

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Allow to return AP by class and mAP score #22

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14 changes: 14 additions & 0 deletions mean_average_precision/detection_map.py
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Original file line number Diff line number Diff line change
Expand Up @@ -157,3 +157,17 @@ def plot(self, interpolated=True):

plt.suptitle("Mean average precision : {:0.2f}".format(sum(mean_average_precision)/len(mean_average_precision)))
fig.tight_layout()

def compute_map(self, interpolated=True):
"""
Compute average precision per class and the mAP score.
:param interpolated: will compute the interpolated curve
:return: tuple: (dict of class -> AP, mAP score)
"""
ap_by_class = {}
for class_idx in range(self.n_class):
precisions, recalls = self.compute_precision_recall_(class_idx, interpolated=interpolated)
average_precision = self.compute_ap(precisions, recalls)
ap_by_class[class_idx] = average_precision
mAP = sum(ap_by_class.values()) / len(ap_by_class)
return ap_by_class, mAP