Abstract
Though the ultimate purpose of this study is to analize variations of shopping districts and big shops according to operating the model of behaviour choosing zones, in this paper the system of model for analizing variations is designed. Conclusion : (1) The basic formula of the model ^kP_<ij> of the force which attracts the inhabitations of i-district at j-shopping district becomes great in inverse proportion to the distance from i-district to j-shopping district (resistant index : x_<ij>), and in proportion to the degree of charm (the index of absorption force; the areas of salerooms classified by goods : S_j, the total areas of salerooms in shopping districts : A_j, the number of places for pleasure : R_j, variations of shopping districts or big shops : V_j). From the standpoint of this view, the basic formula of the model adopts hypothesis such as the gravity-model. The basic formula of the model including these five indeves is as follows. [numerical formula] β_1〜β_5 : presumed parameters (2) The model of behaviour choosing purchasing zones, using the basic formula of the model is divided into four subsystems classified by traffic means utilizing for shopping. And the purchasing behaviour is forecasted in each part of the subsystems. As a result of trying to simulate the present situation with this model, analysis was proceeded with (P_<ij>×the coefficient of utilization classified by the traffic means) instead of P_<ij>, so the model came to have considerable application to the purchasing analysis.
