英文翻译具有学术风格多用高级词汇不要漏翻译：因此将各自变量的贡献程度可视化为柱状图是一种有益于敏感度分析和优化模型性能的实用工具。在决策树回归模型中不同自变量的贡献程度越高则该自变量对模型预测结果的影响就越大也就是说该自变量与因变量之间的关系越紧密。因此通过柱状图可视化来比较不同自变量的贡献程度实际上是在评估模型输出结果对输入参数不确定性的敏感程度并进而选出最相关的自变量来优化模型性能。敏感性检验

Therefore, visualizing the contribution of each variable as a bar chart is a practical tool that is useful for sensitivity analysis and optimizing model performance. In a decision tree regression model, the higher the contribution of a particular independent variable, the greater its impact on the model's predicted outcome, indicating a stronger relationship between the independent variable and the dependent variable. Thus, comparing the contribution of different independent variables through visualization with a bar chart is essentially evaluating the sensitivity of the model output to the uncertainty of input parameters and selecting the most relevant independent variables to optimize model performance. The trend of the model obtained through sensitivity testing also confirms the rationality and accuracy of the second-hand sailboat price evaluation model.