Fig. 4.

The voting weight maps for different σ and β. The graph of exponential functions with different σ is shown in (a). For the three different values of σ, their respective weight maps are obtained with respect to the distance d_k(v) to the user interactions (blue dots) and are shown in (b), (c), and (d), respectively. For three different values of β, their respective weight maps ${\mathit{W}}_{\mathit{L}}^{\mathit{t}}$ are obtained and shown in (e), (f), and (g), respectively, when using σ = 7.