The theory of classification of soliton interactions of the KP equation has been developed recently by Kodama and his collaborators. One of important tools for the KP solitons is networks.
In contrast to the classification of KP solitons, the classification of soliton interactions of the DKP equation (coupled KP equation) is still far from the goal. We need to develop tools for the DKP solitons. In this talk, we develop networks for the DKP solitons.