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+#!/usr/bin/env python3
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+# -*- coding: utf-8 -*-
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+r"""六层链 · `fusion` 步(**逆向工程实现**,2026-09-17 用户令 #2)。
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+
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+## 这个文件是怎么来的
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+
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+包里的编排壳 `src/windcms/pipeline.py::analyze` 会调 `scripts/rudong_fusion_run.py`,而该脚本没随包
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+(六层链四步脚本都缺)。用户令 #2 问"能不能根据旧包产物逆向工程推导出来"——本文件是**可对拍的那部分**
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+的答案:`fleet_scalar_z.parquet` 的标准答案在盘上(随包件),于是口径可以**反推 + 逐值对拍**。
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+
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+## 反推出来的口径(三条都逐值验过)
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+
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+ val = 窗内 median(scalar_value),按 (turbine, sensor_name, meas_name, condition_key) 分组
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+ n = 该组记录数
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+ fleet_med = 跨机组的 median(val)(同一 sensor/meas/bin 下)
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+ z = (val - fleet_med) / (1.4826 × MAD(val)) ← 稳健 z 分数(MAD 抗离群)
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+
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+验证(`--verify`,样件 outputs/<场>/m5_cms_tcm/fleet_scalar_z.parquet,8,887 行):
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+ 样例 WTG01 / Gear_HS_generator_side / CrestFactor / WPS-ActivePower 0-1600,
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+ 样件: val=5.66453 fleet_med=5.91444 z=-0.210156 n=7
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+ 本器: val=5.66453 fleet_med=5.91444 z=-0.210153 n=7
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+ 尺度候选实测: std=1.44859(z=-0.1725) · MAD=0.80209(z=-0.3116) · IQR/1.349=1.46899(z=-0.1701)
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+ **1.4826×MAD=1.18918(z=-0.2102) ← 命中**
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+
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+## 用法
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+
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+ python scripts/rudong_fusion_run.py # 算并落盘 (默认窗口 = 配置里的首窗)
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+ python scripts/rudong_fusion_run.py --verify # 与盘上样件逐值对拍 (不改任何件)
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+ python scripts/rudong_fusion_run.py --out <路径> # 写到别处 (对拍/试验用)
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+
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+★ 本器**只实现已被标准答案验证过的那一件**。`fusion_38.csv` 与 `model_run_l6.parquet` 从未随过包,
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+没有标准答案 ⇒ 不在本器里猜着写(本项目硬规矩: 允许响亮降级, 不许造数; 见
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+`docs/振动六层链_接口规格与缺口_v0.1.md`)。
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+
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+退出码: 0 成功/对拍通过 · 5 对拍不一致 · 2 找不到输入
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+"""
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+from __future__ import annotations
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+
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+import argparse
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+import pathlib
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+import sys
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+
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+ROOT = pathlib.Path(__file__).resolve().parents[1]
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+sys.path.insert(0, str(ROOT))
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+from src import paths as P # noqa: E402
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+
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+
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+def _window_index(win: str) -> pathlib.Path:
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+ """窗索引在哪: w0127 = 首窗特例 (索引在 m5 根), 其余在 windows/<w>/index.parquet。"""
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+ m5 = P.m5()
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+ if win == 'w0127' and (m5 / 'tcm_index.parquet').is_file():
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+ return m5 / 'tcm_index.parquet'
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+ return m5 / 'windows' / win / 'index.parquet'
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+
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+
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+def compute(win: str = 'w0127', min_n: int = 3):
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+ """→ 与样件同构的 DataFrame(sensor, meas, bin, turbine, val, fleet_med, z, n)。"""
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+ import numpy as np
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+ import pandas as pd
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+ ix = _window_index(win)
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+ if not ix.is_file():
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+ raise SystemExit(f'[X] 窗索引不存在: {P.rel(ix)} —— 先跑 scripts/rudong_tcm_index.py')
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+ d = pd.read_parquet(ix, columns=['turbine', 'sensor_name', 'meas_name', 'condition_key', 'scalar_value'])
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+ d['val'] = pd.to_numeric(d['scalar_value'], errors='coerce')
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+ d = d.dropna(subset=['val', 'turbine', 'sensor_name', 'meas_name', 'condition_key'])
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+ g = (d.groupby(['sensor_name', 'meas_name', 'condition_key', 'turbine'])['val']
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+ .agg(val='median', n='size').reset_index())
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+ g = g[g['n'] >= min_n] # ★ 样件口径: 每组至少 3 条记录 (反推自 n 分布 min=3)
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+ # 跨机组的稳健基线: 中位数 + 1.4826×MAD (与样件逐值一致)
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+ gm = g.groupby(['sensor_name', 'meas_name', 'condition_key'])['val'].median().rename('fleet_med')
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+ g = g.merge(gm, on=['sensor_name', 'meas_name', 'condition_key'], how='left')
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+ mad = (g.assign(dev=(g['val'] - g['fleet_med']).abs())
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+ .groupby(['sensor_name', 'meas_name', 'condition_key'])['dev'].median()
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+ .mul(1.4826).rename('scale'))
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+ g = g.merge(mad, on=['sensor_name', 'meas_name', 'condition_key'], how='left')
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+ g['z'] = (g['val'] - g['fleet_med']) / g['scale']
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+ out = g.rename(columns={'sensor_name': 'sensor', 'meas_name': 'meas', 'condition_key': 'bin'})
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+ return out[['sensor', 'meas', 'bin', 'turbine', 'val', 'fleet_med', 'z', 'n']].sort_values(
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+ ['sensor', 'meas', 'bin', 'turbine']).reset_index(drop=True)
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+
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+
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+def verify(win: str = 'w0127', sample: pathlib.Path | None = None) -> int:
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+ """与盘上样件逐值对拍(严格: 同键同值, 容差 1e-4)。"""
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+ import pandas as pd
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+ sp = pathlib.Path(sample) if sample else (P.m5() / 'fleet_scalar_z.parquet')
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+ if not sp.is_file():
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+ print(f'[X] 没有样件可对拍: {P.rel(sp)}')
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+ return 2
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+ got = compute(win)
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+ want = pd.read_parquet(sp)
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+ key = ['sensor', 'meas', 'bin', 'turbine']
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+ m = want.merge(got, on=key, how='outer', suffixes=('_样件', '_本器'), indicator=True)
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+ both = m[m['_merge'] == 'both']
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+ only_w = int((m['_merge'] == 'left_only').sum())
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+ only_g = int((m['_merge'] == 'right_only').sum())
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+
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+ def near(col, tol=1e-4):
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+ a, b = pd.to_numeric(both[f'{col}_样件'], errors='coerce'), pd.to_numeric(both[f'{col}_本器'], errors='coerce')
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+ ok = (a - b).abs() <= tol
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+ return int(ok.sum()), int(len(ok) - ok.sum())
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+
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+ print(f'== fleet_scalar_z 逐值对拍 · 窗 {win} ==')
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+ print(f' 样件 {len(want)} 行 · 本器 {len(got)} 行 · 同键 {len(both)} 行'
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+ f' · 仅样件 {only_w} · 仅本器 {only_g}')
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+ bad_any = 0
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+ for col in ('val', 'fleet_med', 'z', 'n'):
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+ if f'{col}_样件' not in both.columns:
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+ print(f' {col}: (样件无此列)')
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+ continue
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+ ok, bad = near(col, tol=1e-4 if col != 'n' else 0.5)
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+ bad_any += bad
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+ print(f' {col:10s} 一致 {ok:5d} / {len(both):5d} 不一致 {bad}')
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+ ok_all = (len(both) == len(want) == len(got) and bad_any == 0)
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+ print(f' 结论: {"逐值完全一致(口径已复现)" if ok_all else "有差异 —— 见上, 不要拿本器产物替换样件"}')
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+ return 0 if ok_all else 5
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+
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+
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+def main() -> int:
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+ ap = argparse.ArgumentParser(description='六层链 fusion 步(逆向工程实现: fleet_scalar_z)')
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+ ap.add_argument('--window', default='w0127', help='用哪个窗算(默认首窗 w0127,与样件同源)')
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+ ap.add_argument('--verify', action='store_true', help='与盘上样件逐值对拍,不写盘')
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+ ap.add_argument('--sample', default=None, help='--verify 用哪个样件(默认 outputs/<场>/m5_cms_tcm/fleet_scalar_z.parquet)')
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+ ap.add_argument('--out', default=None, help='输出路径(默认写回 m5/fleet_scalar_z.parquet)')
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+ ap.add_argument('--min-n', type=int, default=3, help='每组最少记录数(样件口径 = 3)')
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+ a = ap.parse_args()
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+ if a.verify:
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+ return verify(a.window, pathlib.Path(a.sample) if a.sample else None)
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+ df = compute(a.window, a.min_n)
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+ out = pathlib.Path(a.out) if a.out else (P.m5() / 'fleet_scalar_z.parquet')
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+ out.parent.mkdir(parents=True, exist_ok=True)
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+ df.to_parquet(out, index=False)
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+ print(f'已写 {P.rel(out)}: {len(df)} 行 × {len(df.columns)} 列(窗 {a.window})')
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+ # 自登记 (产物来源自登记: 谁算的谁登记)
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+ try:
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+ from src import derived_manifest as DM
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+ DM.record(P.out_root(), out.relative_to(P.out_root()).as_posix(),
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+ builder='scripts/rudong_fusion_run.py (val=median(scalar); z=(val-fleet_med)/(1.4826*MAD))',
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+ by='rudong_fusion_run', note='逆向工程口径, 与随包样件逐值对拍通过')
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+ print(' 已自登记 → _derived_manifest.json')
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+ except Exception as e:
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+ print(f' [i] 自登记跳过: {type(e).__name__}: {e}')
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+ return 0
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+
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+
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+if __name__ == '__main__':
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+ for _s in (sys.stdout, sys.stderr):
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+ try:
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+ _s.reconfigure(errors='replace')
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+ except Exception:
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+ pass
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+ sys.exit(main())
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