CFSFDP聚类算法相关代码
时间: 2023-07-07 17:44:41 浏览: 130
这里是一个基于Python的CFSFDP聚类算法的示例代码:
```python
import numpy as np
from scipy.spatial.distance import pdist, squareform
def CFSFDP(X, epsilon, k):
n = X.shape[0]
D = squareform(pdist(X))
D[D > epsilon] = np.inf
core_samples = np.zeros(n, dtype=bool)
labels = -1 * np.ones(n, dtype=int)
for i in range(n):
if np.sum(core_samples) == n:
break
if not core_samples[i]:
neighbors = np.where(D[i] != np.inf)[0]
if len(neighbors) >= k:
core_samples[i] = True
labels[i] = np.max(labels) + 1
while len(neighbors) > 0:
j = neighbors[0]
neighbors = neighbors[1:]
if not core_samples[j]:
core_samples[j] = True
labels[j] = labels[i]
new_neighbors = np.where(D[j] != np.inf)[0]
if len(new_neighbors) >= k:
neighbors = np.union1d(neighbors, new_neighbors)
elif labels[j] == -1:
labels[j] = labels[i]
return labels
```
其中,`X`是一个`n x d`的矩阵,表示有`n`个数据点,每个数据点有`d`个特征;`epsilon`是聚类半径;`k`是邻居个数的阈值。函数返回一个长度为`n`的聚类标签数组`labels`。
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