T
tot
N!
(N - 3)!3!
(4)
To get clearer, we will investigate interpersonal network in a group consists of 4
4!
members (figure 2). From the figure, the possible relations are -^^ = 6 relations (table
2). If the types of sentiment relation are 3 i.e. like (+), negative (-) and no-relation (0),
then the possible numbers of sentiment relations from the group are equal to 36 or 729
relation patterns.
Figure 2
The network of sentiment relations between 4 members within a group
Table 2
The possible sentiment relations in a group with N=4
|
____________Possible relations____________ | ||
|
1_____________ |
with |
2 |
|
1_____________ |
with |
3 |
|
1_____________ |
with |
4 |
|
2 |
with |
3 |
|
2 |
with |
4 |
|
3 |
with |
4 |
Meanwhile, the number of possible combinations of agents that form triad for that
group of four is equal to
4!
(4 - 3)!3!
= 4, with the possibility of individual combination as
seen in table 3.
An adjacency matrix of N x N (for example: table 4), is used to draw pattern of
relation (edges) formed between connected individuals (vertices), where Rij = Rji is
interconnectivity sign of i-individuals over j-individuals and vice versa, that can be
positive, negative, or no-relation, signed with +1 for positive relation, -1 for negative