“…, X n,n be a triangular array of independent random elements in E. There exist s * n and t * n such that for 1 ≤ i ≤ ns * n or nt * n < i ≤ n, the X i,n 's have distribution P n , while for ns * n < i ≤ nt * n , they have distribution Q n . We refer to e.g., Avery and Henderson [1], Commenges et al [3], Račkauskas and Suquet [12,13], Yao [17] for a comprehensive review. Our aim to this model is to estimate the pair (s * n , h * n ), where h * n = t * n − s * n measures the length of the changed segment.…”