CODE EXAMPLE FOR PYTHON

recall at k calculate python

def precision(actual, predicted, k):
    act_set = set(actual)
    pred_set = set(predicted[:k])
    result = len(act_set & pred_set) / float(k)
    return result

def recall(actual, predicted, k):
    act_set = set(actual)
    pred_set = set(predicted[:k])
    result = len(act_set & pred_set) / float(len(act_set))
    return result