更新 function.py

function.py

@@ -1,6 +1,6 @@
 # function.py
 import numpy as np
-from collections import Counter
+
 
 """
 挑战说明:
@@ -43,11 +43,17 @@ name = "邓杰元"
 
 # 这里写自己的代码实现
 def classify0(inX, dataSet, labels, k=20):
-    distances = [np.sqrt(np.sum((x - inX) ** 2)) for x in dataSet]
+    # 计算输入向量与训练集中每个样本的欧氏距离  
-    k_indices = np.argsort(distances)[:k]
+    distances = np.sqrt(np.sum((dataSet - input_vector) ** 2, axis=1))  
-    
+      
-    most_common = Counter(k_nearest_labels).most_common(1)
+    # 获取距离最小的k个样本的索引  
-    return most_common[0][0]
+    k_indices = np.argsort(distances)[:k]  
+      
+    # 获取这k个样本的标签  
+    k_nearest_labels = labels[k_indices]  
+      
+    # 找出出现次数最多的标签  
+    most_common = Counter(k_nearest_labels).most_common(1)