Hausdorff metric (hausdorff)

Compute the Hausdorff distance between changepoints.

Parameters:

Name	Type	Description	Default
bkps1	list	list of the last index of each regime.	required
bkps2	list	list of the last index of each regime.	required

Returns:

Name	Type	Description
float		Hausdorff distance.

Source code in ruptures/metrics/hausdorff.py

def hausdorff(bkps1, bkps2):
    """Compute the Hausdorff distance between changepoints.

    Args:
        bkps1 (list): list of the last index of each regime.
        bkps2 (list): list of the last index of each regime.

    Returns:
        float: Hausdorff distance.
    """
    sanity_check(bkps1, bkps2)
    bkps1_arr = np.array(bkps1[:-1]).reshape(-1, 1)
    bkps2_arr = np.array(bkps2[:-1]).reshape(-1, 1)
    pw_dist = cdist(bkps1_arr, bkps2_arr)
    res = max(pw_dist.min(axis=0).max(), pw_dist.min(axis=1).max())
    return res