计算三维模型检索结果的PR曲线（precision recall curve）

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计算三维模型检索结果的PR曲线（precision recall curve）

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To obtain a more detailed analysis of the efficiency of a 3D model retrieval system, it is often useful to calculate the precision recall curve (PR curve). This curve is a graphical representation that shows the trade-off between precision and recall for a given retrieval system. The PR curve is calculated by plotting the precision values against the corresponding recall values for different retrieval thresholds. This enables a more in-depth analysis of the performance of the retrieval system, as it allows us to see how the precision and recall values change at different levels of recall. By analyzing the PR curve, we can adjust the retrieval parameters to optimize the system's performance and achieve better results.