tian
98e375dc36
项目合并为单仓库：设备端(根) + 管理端(control/)。 两端 git 历史完整保留（git subtree 合并）。 git-subtree-dir: control git-subtree-mainline:923ab10d5cgit-subtree-split:70738edb31
21 lines
586 B
Python
21 lines
586 B
Python
from __future__ import annotations
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import numpy as np
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def l2_normalize(v: np.ndarray, eps: float = 1e-12) -> np.ndarray:
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v = np.asarray(v, dtype=np.float32)
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n = float(np.linalg.norm(v))
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if n < eps:
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return v * 0.0
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return v / n
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def compute_centroid(embs: np.ndarray) -> np.ndarray:
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"""embs: float32 shape (K,D), expected already L2-normalized per row."""
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embs = np.asarray(embs, dtype=np.float32)
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if embs.ndim != 2 or embs.shape[0] < 1:
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raise ValueError("embs must be (K,D) with K>=1")
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c = embs.mean(axis=0)
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return l2_normalize(c)
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