def METHOD_NAME(list1, list2, depth, index2word, embedding_space, norm):
    """Proportion of shared values between two sorted lists at given depth."""
    len_intersection, len_set1, len_set2 = embeddings_overlap(list1, list2, depth, index2word, embedding_space=embedding_space, norm=norm)
    return 2 * len_intersection / (len_set1 + len_set2)