Figure 6
Panel (a): Time Since Opening: The horizontal axis is labeled “Time Since Opening” and ranges from approximately negative 5 to 1 in increments of 1. The vertical axis is labeled “Partial effect” and ranges from approximately negative 0.3 to 0.2 in increments of 0.1. Two curves are shown: Baseline and Adaptive, with a shaded 95 percent confidence interval. Both curves rise from negative values at low x values, peak near approximately 0.18 around negative 1, then decline sharply after 0 and reach below negative 0.30 near 1.3. The two curves closely overlap. Panel (b): Distance to Tourist Attraction Center: The horizontal axis is labeled “Distance to Tourist Attraction Center” and ranges from approximately negative 1 to 3 in increments of 1. The vertical axis is labeled “Partial effect” and ranges from approximately negative 0.1 to 0.3 in increments of 0.1. Both curves begin high near approximately 0.34, fall below negative 0.1 near 0, remain negative, rise to a positive bump near 2, dip again near 2.8, and rise toward the far right. The adaptive confidence interval widens at the extremes. Panel (c): Facility Index: The horizontal axis is labeled “Facility Index” and ranges from 0 to 10 in increments of 2. The vertical axis is labeled “Partial effect” and ranges from approximately negative 0.2 to 0.3 in increments of 0.1. Both curves increase steadily from approximately negative 0.28 at low values, cross zero near 2.3, rise rapidly to about 0.20 near 4, then continue gradual growth and level near approximately 0.28 by 9 to 10. The two curves nearly coincide. Panel (d): Facility Index - Area Interaction Effect Plot: A three-dimensional surface plot is shown. The horizontal axes are labeled “Facility Index” and “Area”. The “Facility Index” axis ranges from 0 to 8 in increments of 2. The “Area” axis ranges from negative 2 to 2 in increments of 1. The vertical axis is labeled “Linear predictor” and ranges from 4.0 to 6.0 in increments of 0.5. The surface rises overall from lower values at low facility index and low area toward higher values at larger facility index and area, with visible ridges and shallow valleys indicating nonlinear interaction patterns. Note: All numerical values are approximated.Gam partial effect plot. Source: Authors’ own work