IEEE Systems, Man and Cybernetics Magazine - April 2020 - 14
Algorithm S9. Incremental VAT
(inc-VAT).
Input : D l)n - n # n VAT reordered dissimilarity matrix for
X n, n $ 2
Pn - VAT reordering indices of D )n
d n - MST cut magnitude order of D )n
Fn - MST connection indices of D )n
V = " v 1,v 2,f,v n , - distance of x n+1 from
" x 1, x 2,f, x N ,
Output: D )n + 1 - (n + 1) # (n + 1) VAT reordered dissimilarity
matrix for X n + 1
Pn + 1 - VAT reordering indices of D )n + 1
d n + 1 - MST cut magnitude order of D )n + 1
Fn + 1 - MST connection indices of D )n + 1
1 Find the insertion position i for x n+1
2 (i, Pn + 1, d n + 1, Fn + 1) = InsertPosition (Pn, d n, Fn,V )
(algorithm S8)
3 A = " Pn , Pn ,f, Pn ,
4 C = " Pn , Pn ,f, Pn ,
5 B = Pn \C
6 E = 4
7 G = " 1, 2,f, i - 1 ,
8 H = " Fn , Fn ,f, Fn ,
i
1
i
i+1
n
2
i-1
i+1
n
9 Reorder the remaining points after insertion
position
10 while A ! 4 do
11 ^A, B, E, Pn + 1, d n + 1, Fn + 1, G, H h =
IncInsert ^A, B, E, Pn + 1, d n + 1, Fn + 1, G, H, D )n, Pn, d n, Fn h
12
(algorithm S10)
13 end
14 D )n = D )n
15 Y ) = YG
16 Y ) = 6Y 1) ,Y 2) ,f,Y i)- 1, 0,Y )i ,Y )i + 1,f,Y )n@
17 D )n + 1 = Insert Y ) after i - 1th row and i - 1th column
of D )n
G, G
Algorithm S10. IncInsert.
Input : D )n - n # n VAT reordered dissimilarity matrix for X n
Pn - VAT reordering indices of D )n
d n - MST cut magnitude order of D )n
Fn - MST connection indices of D )n
1 Input-Output: A, B, E, Pn + 1, d n + 1, Fn + 1, G, H
z1 = dn
2 w 1 = B 1
v 1 = arg ^Pn + 1 = Pn
Pos(B 1) - 1
H1
_ Minimum distance, closest
bb
point index, and MST
`
hb connection index from G1
a
z 2 = min (YA) Minimum distance, closest point
index, and MST connection
3 w 2 = A argmin(Y ) 4
v2 = i
index from G2
6 switch z do
7 case z 1 do
^A B, E, Pn + 1, d n + 1, Fn + 1, G, H h =
8 ,
M1^A, B, E, Pn + 1, d n + 1, Fn + 1, G, H, z 1,w 1,v 1 h
9
(algorithm S12)
10 end
11 case z 2 do
^A B, E, Pn + 1, d n + 1, Fn + 1, G, H h =
12 ,
M2 ^A, B, E, Pn + 1, d n + 1, Fn + 1, G, H, z 2,w 2,v 2 h
13
(algorithm S13)
14 end
15 case z 3 do
^A B, E, Pn + 1, d n + 1, Fn + 1, G, H h =
16 ,
M3 ^A, B, E, Pn + 1, d n + 1, Fn + 1, G, H, z 3,w 3,v 3 h
17
(algorithm S14)
18 end
19 end
Algorithm S11. LongestSubsequence
Input : Pn - VAT reordering indices of D )n
Pn + 1 - VAT reordering indices of D )n +1
Output: LongestSubsequence ^Pn, Pn + 1 h
1 for j ! 1 to n do
2 if Pn " Pn + 1 then
3 break
4 end
5 end
j
6 LongestSubsequence ^Pn, Pn + 1 h = " Pn , Pn ,f, Pn ,
1
2
Algorithm S12. Procedure M1.
Input : z 1 - minimum distance from G1
w 1 - closest point index from G1
v 1 - MST connection index from G1
1 Input-Output: A, B, E, Pn + 1, d n + 1, Fn + 1, G, H
2 Pn + 1 = " Pn + 1,w 1 ,; d n + 1 = " d n + 1, z 1 ,; Fn + 1 = " Fn + 1,v 1 ,
3 G = " G, Pos ^w 1 h,
4 C = LongestSubsequence ^Pn, Pn + 1 h (algorithm S11)
5 B = Pn \C
6 while length ^H h 2 length ^B h do
7 delete H 1
8 end
9 delete w 1 from A
A
h
z 3 = min ^D )n
( j, k) = argmin ^D )n
4
w3 = A j
v 3 = arg (Pn + 1 = E k )
Pos (A), Pos (E )
Pos (A), Pos (E )
5 z = min ^z 1, z 2, z 3 h
14
_ Minimum distance,
b
hb closest point index,
`
b and MST connection
b
index from G3
a
IEEE SYSTEMS, MAN, & CYBERNETICS MAGAZINE Apri l 2020
j-1
Algorithm S13. Procedure M2.
Input : z 2 - minimum distance from G2
w 2 - closest point index from G2
v 2 - MST connection index from G2
IEEE Systems, Man and Cybernetics Magazine - April 2020
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