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Read the graph

The multidisciplinary coupling graph is a particular N² chart:

Its diagonal elements are the disciplines.
A discipline takes its inputs vertically and returns its outputs horizontally.
The links between disciplines are located outside the diagonal as coloured squares; in other words, if the cell (i,j) is colored, the j^th discipline takes as input some outputs of the i^th discipline; we talk about bi-disciplinary coupling.
The disciplines that are strongly coupled to each other are part of the same group, represented by a color whose intensity increases with the number of coupling variables.

Handle the graph

Disciplinary details

Click on a diagonal element to get details about the corresponding discipline or group of disciplines.

Coupling details

Click on a non-diagonal element to get details about the bi-disciplinary coupling.

Sorting

There are different criteria to sort the disciplines:

coupling group: the disciplines of the same group are placed side by side;
coupling frequency: the disciplines are classified by decreasing order of bi-disciplinary coupling;
discipline name: the disciplines are classified in alphabetical order.

Grouping

On the right side, click on a group of disciplines to change its name and click on its checkbox to expand it or collapse it.

A group consists of disciplines that are strongly coupled⁽¹⁾ to each other and weakly coupled to those in other groups, except for the first one which contains the disciplines that are only weakly⁽²⁾ coupled between themselves and with others.

⁽¹⁾ A and B are strongly coupled if A depends on B and B depends on A.

⁽²⁾ A and B are weakly coupled if either A depends on B or B depends on A, but not both.