minkowski_distance_gradient

[jiwoongpark92]

I think

def minkowski_distance_gradient(u, v):
# u,v in hyperboloid
# returns gradient with respect to u
return -1*(hyperboloid_dot(u,v) ** 2 - 1) ** -1/2 * v

should be changed into

def minkowski_distance_gradient(u, v):
# u,v in hyperboloid
# returns gradient with respect to u
return -1*(hyperboloid_dot(u,v) ** 2 - 1) ** (-1/2) * v

However, I cannot obtain clustering results when I changed the above function.