generated from LufsX/Experiment-LogReg
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+18
-2
@@ -17,6 +17,7 @@ id = "202210423208"
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name = "刘义天"
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# 加载数据并添加非线性特征
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def load_data(filepath):
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"""
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@@ -96,6 +97,22 @@ def train_decision_tree(X, y):
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return clf
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# 对率回归预测函数
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def predict_logreg(inX, weights):
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"""
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对率回归预测函数。
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Args:
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- inX (numpy array): 输入待分类的样本。
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- weights (numpy array): 训练得到的权重。
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Returns:
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- int: 预测的分类标签。
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"""
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probability = 1 / (1 + np.exp(-np.dot(inX, weights)))
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return 1 if probability >= 0.4 else 0
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# 融合预测函数
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def predict_fusion(inX, weights, clf):
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"""
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@@ -110,8 +127,7 @@ def predict_fusion(inX, weights, clf):
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- int: 最终预测的分类标签。
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"""
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# 对率回归预测
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probability_logreg = 1 / (1 + np.exp(-np.dot(inX, weights)))
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prediction_logreg = 1 if probability_logreg >= 0.4 else 0
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prediction_logreg = predict_logreg(inX, weights)
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# 决策树预测
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prediction_tree = clf.predict(inX.reshape(1, -1))[0]
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