Figure 8
The figure consists of three panels, examining the interaction strengths of product attributes related to performance and reliability through line plots and heatmaps. Panel (a): The line plot visualizes the relationship between reliability, labeled on the horizontal axis, ranging from 0.05 to 0.40 with an interval of 0.05, and probability on the vertical axis, from negative 0.10 to 0.20 with an interval of 0.05. The plot features multiple thin gray lines, each representing individual models or data traces of how probability varies with reliability. These lines show variability across the entire horizontal axis range. A prominent yellow dashed line, labeled “average” in the legend at the top right, represents the mean trend of the gray traces. This line starts near zero probability at (0.06, 1) and shows a gentle upward trend, particularly from reliability values around 0.15 onward, indicating that higher reliability values are associated with a slight increase in probability, which ends at (0.395, 0.032). The thin lines are present above and below the dashed yellow line in the same pattern. Panel (b): A horizontal bar chart ranking reliability’s interaction strength with product features, led by after-sales services. This horizontal bar chart is titled “Interaction Strength – Reliability.” The chart lists the following labels from top to bottom: “Reliability underscore After-sales Services,” “Reliability underscore Selling Price,” “Reliability underscore Sales Rank,” “Reliability underscore Warranty,” “Reliability underscore Logistics Service Quality,” “Reliability underscore Durability,” “Reliability underscore Performance,” “Reliability underscore Secondary Features,” “Reliability underscore Primary Features,” and “Reliability underscore Product Information Mismatch.” A rightward arrow at the bottom of the graph is labeled “More Interactive.” The longest bar at the top corresponds to “Reliability underscore After-sales Services,” indicating the highest interaction. Next in strength are “Reliability underscore Selling Price,” “Reliability underscore Sales Rank,” and “Reliability underscore Warranty.” The size of bars decreases from top to bottom, and the bar for the factor “Reliability underscores Product Information Mismatch” is the shortest. Panel (c): A heatmap of interaction values between reliability and after-sales services with labeled cells. This heatmap visualizes interaction strengths between “Reliability,” labeled on the horizontal axis, and “After-sales Services,” labeled on the vertical axis. The horizontal axis contains reliability values: 0.06, 0.10, 0.13, 0.18, 0.24, and 0.4. The vertical axis shows after-sales services values, from bottom to top: 0.00, 0.00, 0.00, 0.01, 0.12, and 0.35. Each cell contains a numeric value representing the strength of interaction for the corresponding value pair. Listed row by row (from bottom to top), the values are Row for After-sales Services 0.00: negative 0.011, negative 0.011, negative 0.012, negative 0.001, negative 0.001, 0.020. Row for 0.00: negative 0.007, negative 0.007, negative 0.007, 0.003, 0.003, 0.024. Row for 0.00: negative 0.007, negative 0.007, negative 0.007, 0.003, 0.003, 0.024. Row for 0.01: negative 0.006, negative 0.006, negative 0.006, 0.003, 0.003, 0.023. Row for 0.12: negative 0.011, negative 0.011, negative 0.011, negative 0.002, negative 0.002, 0.019. Row for 0.35: negative 0.009, negative 0.009, negative 0.009, 0.001, 0.000, 0.031. Color shading ranges from dark blue for the highest positive interaction values to pale green or yellow for the most negative values. Note: All numerical data values are approximated.PDP, ICEs and interaction strength of reliability. Source: Authors’ own creation