Studying Visual and Spatial Reasoning for Design Creativity by John S. Gero

Author:John S. Gero
Language: eng
Format: epub, pdf
Publisher: Springer Netherlands, Dordrecht

The Basic SIRN Model

The derivation of the basic SIRN model starts with Haken’s (1991/2004) ‘synergetic computer’ as presented in Fig. 6 (top). This is a fully parallel computer that represents an alternative to the conventional neural network model in that the elements of its inner layer are order parameters. As can be seen, it is composed of an input layer with model neurons representing the initially given input activity; a middle layer representing the order parameters, and an output layer with neurons representing the final activity of each neuron. The first step is to look at this network from the side, as indicated by the arrow in Fig. 6 (middle). The result is shown in Fig. 6 (bottom, left). Adding to the latter external inputs and outputs, we arrive at our basic SIRN model in Fig. 6 (bottom, right). As can be seen, it has two kinds of inputs, internal and external and two kinds of outputs, again internal and external. The middle node symbolizes the order parameters that emerge out of the dynamic interaction between internal and external representations [3]. The basic SIRN model as derived from Fig. 6 is illustrated graphically in Fig. 7.

Fig. 6Internal and external representations

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