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navtrain_metric_cache/2021.06.09.12.51.31_veh-35_00697_00820/unknown/7f54328a18a15c07/metric_cache
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End of preview. Expand in Data Studio

NAVSIM navtrain metric cache

NAVSIM navtrain split 的 metric cache,用于 PDM score 计算(AutoVLA 等做 RL/GRPO 训练时的 reward, 或跑 PDMS 评测)。纯 CPU 产物,与模型无关,一次生成可永久复用。

场景数 103,288(train 101,288 + val 2,000)
大小 35 GB(解包后)
生成 navsim/planning/script/run_metric_caching.py,train_test_split=navtrain
覆盖率 对 navtrain 的 101,288 个训练样本 100% 覆盖,缺 0

每个 metric_cache.pkl(lzma 压缩,约 450 KB)含 PDMScorer 判分所需的全部内容: ego_state、trajectory(PDM 参考轨迹)、observation(各时刻 agent 占用)、 centerline、route_lane_ids、drivable_area_map。

下载与解包

huggingface-cli download PhoenixHu/doc_vla_cache_train --repo-type dataset --local-dir .
cat navtrain_metric_cache.tar.part* | tar xf -
# -> navtrain_metric_cache/

🔴 必读:解包后必须改写 metadata 里的绝对路径

metadata/navtrain_metric_cache_metadata_node_0.csv 里存的是生成时那台机器的绝对路径 (/scratch/mh2803/vla/nuplan/navtrain_metric_cache/...)。MetricCacheLoader 会原样拿它开文件:

# navsim/common/dataloader.py
metadata_file = [f for f in metadata_dir.iterdir() if ".csv" in str(f)][0]   # 注意是子串匹配
cache_paths   = f.read().splitlines()[1:]                                    # 绝对路径,直接使用

不改的话症状是:每个场景都 Agent failed、PDMS 全 0,而 .pkl 明明就在本地。

NEW=/your/path/to/navtrain_metric_cache
sed -i "s#/scratch/mh2803/vla/nuplan/navtrain_metric_cache#${NEW}#g" \
    "$NEW"/metadata/*.csv

⚠️ 备份不要放在 metadata/ 里面 —— 上面那行是 ".csv" in str(f) 的子串匹配, xxx.csv.bak 也会被选中,[0] 可能挑到它,等于没改。备份放到 metadata/ 之外。

改完自检:

from pathlib import Path
from navsim.common.dataloader import MetricCacheLoader
print(len(MetricCacheLoader(Path("<你的路径>")).tokens))   # 应为 103288

相关

许可

派生自 nuPlan / OpenScene, 请遵守其原始许可条款。本仓库仅为已授权用户提供预计算的中间产物,不含任何原始传感器数据或标注。

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