docs(actpred): 模型 B zscore 等权稳定基线文档 + spk 两列固定常量
B 是六模型闭环评估中唯一稳定配置(2445/0.082),固化完整方案作为 部署基线与实验对照基准,并总结归一化系列失败机理(反馈回路需误差 有界且收缩)。配套实现:spk.F/spk.delay 权重归零、推理/反馈固定 常量(bins.FIXED_OUTPUT),拔除闭环发散源,为 B2(zscore+v2)与 F2(onehot+固定)铺路。
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@@ -10,7 +10,7 @@ from config import parse_checkpoint_config
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from imu_norm import normalize_imu
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from action_norm import (normalize_action, denormalize_action,
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is_range_mode)
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from bins import decode as bin_decode
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from bins import decode as bin_decode, fixed_zero_columns
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from model import ActionPredictor
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from utils import parse_action_history
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@@ -120,8 +120,16 @@ class ActionPredictorInference:
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).unsqueeze(0).to(self._device)
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pred = self._model(img_tensor, history, imu_tensor).squeeze(0) # 归一化空间
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if self._onehot:
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# 多头 logits → 期望值解码 → 原始量纲(箱生活在原始空间)
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# 多头 logits → 期望值解码 → 原始量纲(箱生活在原始空间);
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# 权重 0 列固定为常量(delay=10ms 等),防闭环垃圾回写
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result = bin_decode(pred.cpu().numpy(), self.action_dim)
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col_w = self._data_cfg.column_weights
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if col_w is None:
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from action_norm import default_column_weights
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col_w = default_column_weights(self.action_dim)
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fixed = fixed_zero_columns(col_w, self.action_dim)
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m = fixed != 0.0
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result[m] = fixed[m]
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if not np.all(np.isfinite(result)):
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result = np.nan_to_num(result, nan=0.0, posinf=0.0, neginf=0.0)
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return result
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