在Matlab中绘制一个包含实例结果的决策树

Question

我在Weka中创建了一个决策树。我现在想要在matlab中计算预测（使用此模型）并在树中很好地可视化结果。但我无法找到一个很好的方法来绘制树和实例的结果。

我应该将其绘制为流程图吗？是否有开箱即用的方式来做到这一点？我可以在Matlab中计算C4.5并且它是否已经绘制了树？

Answer 1

您可以直接从Weka可视化树：Visualizing Weka classification tree

然后，您可以要求Weka打印树，您可以在其他地方复制和解析结构。将结构视为某种嵌套的if / then / elses，将是这样的：

FeatureLabel-hasPRP <= 0
|   FeatureAnimal-Class <= 0.636364
|   |   FeatureLabel-hasNNP <= 0
|   |   |   v-subject-g-talk <= 0.285714
|   |   |   |   FeatureLabel-hasNN <= 0
|   |   |   |   |   FeatureLabel-hasPOS <= 0
|   |   |   |   |   |   FeatureLabel-dep_head_det_the <= 0: NONACTOR (130.03/6.27)
|   |   |   |   |   |   FeatureLabel-dep_head_det_the > 0: ACTOR (16.19/6.27)
|   |   |   |   |   FeatureLabel-hasPOS > 0: ACTOR (21.41/2.09)
|   |   |   |   FeatureLabel-hasNN > 0
|   |   |   |   |   FeatureVehicle-Class <= 0.487179

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