Intelligent Biosystems and the Idea of the Joint Synthesis of Goals and Means - Intelligent Systems - page 330

4. Simulation of a goal-directed activity based on joint synthesis
The hypothesis of joint synthesis and its possible neural implementation can be considered a
basis for computer models of goal-directed activity. It is necessary to point out that these
models are neither models of a certain aspect of human or animal activity nor
implementations of goal-directed activity in the brain. They are simply intended to
demonstrate how a goal-directed process can be constructed. The models share a common
basis but have certain distinctive characteristics.

4.1 A simple model of goal-directed activity (model 1)
The architecture of the model is presented in Figure 1.

Environment

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Fig. 1. Architecture of model 1

The model consists of two fractions; one is the system in which a goal-directed activity
should be constructed and the other is the environment influencing the state of the system.
At the beginning, a new goal-directed process emerges within the system under a certain
state of the environment and after changing the environment, the process pursues its goal
associated with the initial state of the environment using the means constructed.

The system includes one layer consisting of z autonomous modules and the output of the
system is a summation of the outputs of its modules. Each module contains several n-
dimension vectors with real numbers as its components. These vectors are an input vector
(IV), which is filled by information from the environment (its k th component is IV k ,
accordingly), a vector of coefficients (CV), and an output vector (OV). The functioning of the
vectors is described below. Also, each module has an activation level (AL), a real number