generated from LufsX/Challenge-SVM
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+7
-4
@@ -10,8 +10,10 @@ def load_data(filepath):
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for line in f:
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line = line.strip().split()
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if len(line) >= 1 and line[-1].isdigit():
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# 将特征值中的缺失值(“?”)替换为0,并将其余项转换为浮点数
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line_data = [0 if x == '?' else float(x) for x in line[:-1]]
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data.append(line_data)
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# 保留标签原始的三分类标签
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labels.append(int(line[-1]))
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data = np.array(data)
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@@ -20,16 +22,16 @@ def load_data(filepath):
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# 检查特征数量
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num_features = data.shape[1]
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# 特征选择 去掉特征3(索引2)和特征24~28(索引23~26) 确保索引有效
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# 特征选择:去掉特征3(索引2)和特征24~28(索引23~26),确保索引有效
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indices_to_delete = [2] # 特征3
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if num_features > 24: # 确保特征数量足够
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indices_to_delete += list(range(24, 27)) # 特征24到27(索引23到26)
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# 删除特征
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# 删除指定特征列
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data = np.delete(data, indices_to_delete, axis=1)
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# 将标签二分类化 特征23(索引22)取值2和3合并为0 其余为1
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target_variable = np.where((labels == 2) | (labels == 3), 0, 1)
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# 保留三分类标签
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target_variable = labels # 不再合并任何标签,保持三分类
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return data, target_variable
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@@ -37,6 +39,7 @@ def load_data(filepath):
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def train_svm(X, y, learning_rate=0.01, iterations=1000):
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"""
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支持向量机训练函数。
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