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    <title>NAVSIM on Elon&#39;s AD Insight</title>
    <link>https://auto-driving-blog.vercel.app/tags/navsim/</link>
    <description>Recent content in NAVSIM on Elon&#39;s AD Insight</description>
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    <lastBuildDate>Sun, 19 Jul 2026 00:00:00 +0000</lastBuildDate>
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    <item>
      <title>论文精读｜ExploreVLA：密集世界建模与探索驱动的端到端自动驾驶</title>
      <link>https://auto-driving-blog.vercel.app/posts/paper-reading/%E8%AE%BA%E6%96%87%E7%B2%BE%E8%AF%BB-2604-02714/</link>
      <pubDate>Sun, 19 Jul 2026 00:00:00 +0000</pubDate>
      <guid>https://auto-driving-blog.vercel.app/posts/paper-reading/%E8%AE%BA%E6%96%87%E7%B2%BE%E8%AF%BB-2604-02714/</guid>
      <description>VLA 模型通过行为克隆学习驾驶策略，但受限于模仿学习无法探索专家分布之外的高质量策略。ExploreVLA 提出统一的理解-生成框架：用未来 RGB + 深度图生成作为密集世界建模目标，再利用世界模型的图像预测不确定性作为内在探索奖励，通过安全门控的 GRPO 优化策略。在 NAVSIM 上达到 93.7 PDMS 和 88.8 EPDMS。</description>
    </item>
    <item>
      <title>NAVSIM 排行榜深度分析：谁在统治端到端规划？架构、创新与分数全解</title>
      <link>https://auto-driving-blog.vercel.app/posts/knowledge/navsim%E6%8E%92%E8%A1%8C%E6%A6%9C%E6%B7%B1%E5%BA%A6%E5%88%86%E6%9E%90/</link>
      <pubDate>Sun, 19 Jul 2026 00:00:00 +0000</pubDate>
      <guid>https://auto-driving-blog.vercel.app/posts/knowledge/navsim%E6%8E%92%E8%A1%8C%E6%A6%9C%E6%B7%B1%E5%BA%A6%E5%88%86%E6%9E%90/</guid>
      <description>NAVSIM 已成为端到端规划的事实标准benchmark，PDMS/EPDMS排行榜上群雄逐鹿。本文系统梳理navtest/navhard双榜Top方法，从Scoring-based、Diffusion-based、VLA、World Model 四大技术路线解构各家架构设计与核心创新，严格区分官方排行榜已录结果与arXiv宣称结果，并给出技术趋势判断与个人思考。数据截至2026年7月。</description>
    </item>
    <item>
      <title>开环评测 vs 闭环评测深度解析</title>
      <link>https://auto-driving-blog.vercel.app/posts/knowledge/%E5%BC%80%E7%8E%AF%E8%AF%84%E6%B5%8Bvs%E9%97%AD%E7%8E%AF%E8%AF%84%E6%B5%8B%E6%B7%B1%E5%BA%A6%E8%A7%A3%E6%9E%90/</link>
      <pubDate>Sun, 19 Jul 2026 00:00:00 +0000</pubDate>
      <guid>https://auto-driving-blog.vercel.app/posts/knowledge/%E5%BC%80%E7%8E%AF%E8%AF%84%E6%B5%8Bvs%E9%97%AD%E7%8E%AF%E8%AF%84%E6%B5%8B%E6%B7%B1%E5%BA%A6%E8%A7%A3%E6%9E%90/</guid>
      <description>&lt;h2 id=&#34;一引言&#34;&gt;一、引言&lt;/h2&gt;
&lt;p&gt;在自动驾驶规划算法的研发流程中，评估方法的选择直接影响研究者对模型能力的判断。目前两类主流的评估范式——开环评测（Open-loop Evaluation）与闭环评测（Closed-loop Evaluation）——各有理论基础和适用范围，但二者之间存在显著的鸿沟。&lt;/p&gt;
&lt;p&gt;NAVSIM 论文《Can We Also Drive in Closed-loop?》通过系统性实证研究揭示了这一鸿沟的严重程度：开环评测中的 L2 误差与闭环驾驶质量之间的 Pearson 相关系数仅约 0.3。这意味着一个在开环评测中排名第一的模型，在真实闭环部署中可能完全不合格。越来越多的研究者开始呼吁抛弃&amp;quot;开环迷信&amp;quot;，转向更可靠的闭环评估或混合评估策略。&lt;/p&gt;
&lt;p&gt;本文将从原理、方法、指标和实证分析四个维度，全面解析这两种评测范式，帮助研究者在论文写作和模型选择中做出更准确的判断。&lt;/p&gt;
&lt;h2 id=&#34;二开环评测&#34;&gt;二、开环评测&lt;/h2&gt;
&lt;h3 id=&#34;21-基本定义&#34;&gt;2.1 基本定义&lt;/h3&gt;
&lt;p&gt;开环评测的核心流程如下：&lt;/p&gt;
&lt;ol&gt;
&lt;li&gt;从已录制的驾驶数据集中取出一个片段&lt;/li&gt;
&lt;li&gt;将历史观测数据（图像、点云、高精地图等）输入规划模型&lt;/li&gt;
&lt;li&gt;模型输出未来一段时间的 EGO 预测轨迹&lt;/li&gt;
&lt;li&gt;将预测轨迹与人类驾驶员在 log 中的实际轨迹（ground truth）进行比较&lt;/li&gt;
&lt;li&gt;计算误差指标&lt;/li&gt;
&lt;/ol&gt;
&lt;p&gt;关键特征在于：&lt;strong&gt;评测过程中，模型不会接收到自身决策的反馈&lt;/strong&gt;。每一步的输入都来自真实 log 数据，与模型的预测无关。&lt;/p&gt;
&lt;h3 id=&#34;22-数据流示意&#34;&gt;2.2 数据流示意&lt;/h3&gt;



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&lt;p&gt;这种&amp;quot;教师强制（Teacher Forcing）&amp;ldquo;模式下，模型的一步预测误差不会传播到下一步——每一步都是独立比较。&lt;/p&gt;</description>
    </item>
    <item>
      <title>论文精读：Hydra-MDP — End-to-end Multimodal Planning with Multi-target Hydra-Distillation</title>
      <link>https://auto-driving-blog.vercel.app/posts/paper-reading/%E8%AE%BA%E6%96%87%E7%B2%BE%E8%AF%BB-2406-06978/</link>
      <pubDate>Sun, 19 Jul 2026 00:00:00 +0000</pubDate>
      <guid>https://auto-driving-blog.vercel.app/posts/paper-reading/%E8%AE%BA%E6%96%87%E7%B2%BE%E8%AF%BB-2406-06978/</guid>
      <description>Hydra-MDP 提出多教师知识蒸馏框架，从人类示范教师（模仿人类轨迹）和规则教师（碰撞/可行驶区域等闭环指标）中同时学习，用多头解码器集成多样化轨迹候选。它以端到端可微分的方式统一了模仿学习和闭环指标优化，在 CVPR 2024 Navsim 挑战赛获得第一名，证明了多目标蒸馏范式在驾驶规划中的有效性。</description>
    </item>
    <item>
      <title>论文精读｜AutoDrive-P³：感知-预测-规划链式思维的统一强化微调——ICLR 2026 端到端驾驶新范式</title>
      <link>https://auto-driving-blog.vercel.app/posts/paper-reading/%E8%AE%BA%E6%96%87%E7%B2%BE%E8%AF%BB-2603-28116/</link>
      <pubDate>Sun, 19 Jul 2026 00:00:00 +0000</pubDate>
      <guid>https://auto-driving-blog.vercel.app/posts/paper-reading/%E8%AE%BA%E6%96%87%E7%B2%BE%E8%AF%BB-2603-28116/</guid>
      <description>当前 VLM 驾驶方案要么直接输出规划缺失 CoT 推理，要么将感知-预测-规划割裂为独立模块缺乏协同。AutoDrive-P³ 提出统一链式思维框架，通过 P³-CoT 数据集构建感知→预测→规划的结构化推理链，再用 P³-GRPO 算法进行分层渐进式强化微调——将奖励从规划反传到感知和预测模块，实现三模块联合优化。在 NAVSIM 上达到 89.9 EPDMS，nuScenes 上取得最低碰撞率。</description>
    </item>
    <item>
      <title>论文精读｜DriveFuture：未来感知潜在世界模型——以未来状态条件化当前规划的 SOTA 范式</title>
      <link>https://auto-driving-blog.vercel.app/posts/paper-reading/%E8%AE%BA%E6%96%87%E7%B2%BE%E8%AF%BB-2605-09701/</link>
      <pubDate>Sun, 19 Jul 2026 00:00:00 +0000</pubDate>
      <guid>https://auto-driving-blog.vercel.app/posts/paper-reading/%E8%AE%BA%E6%96%87%E7%B2%BE%E8%AF%BB-2605-09701/</guid>
      <description>现有潜在世界模型将未来状态视为预测目标而非规划条件，导致当前与未来特征纠缠。DriveFuture 提出以未来世界状态显式条件化当前决策的框架：训练时用 GT 未来潜在状态做条件，推理时用预测的未来状态接替，实现统一的规划导向 foresight 机制。在 NAVSIM v2 navhard 上以 55.5 EPDMS 排名第一，navtest 上达到 89.9 EPDMS 和 90.7 PDMS。</description>
    </item>
    <item>
      <title>论文精读｜Uni-World VLA — 交错世界建模与规划实现闭环交互驾驶</title>
      <link>https://auto-driving-blog.vercel.app/posts/paper-reading/%E8%AE%BA%E6%96%87%E7%B2%BE%E8%AF%BB-2603-27287/</link>
      <pubDate>Sun, 19 Jul 2026 00:00:00 +0000</pubDate>
      <guid>https://auto-driving-blog.vercel.app/posts/paper-reading/%E8%AE%BA%E6%96%87%E7%B2%BE%E8%AF%BB-2603-27287/</guid>
      <description>现有世界模型通常先生成完整未来视频再规划（开环想象），但这种方式忽略了规划决策对环境的实时反馈。Uni-World VLA 提出交错生成范式——模型逐帧交替预测未来画面和自车动作，形成世界建模与控制的闭环交互。同时引入单目深度图作为几何线索增强空间感知。在 NAVSIM 上以单目 RGB 达到 89.4 PDMS，超越多传感器融合方法。</description>
    </item>
    <item>
      <title>论文精读｜CLOVER：闭环价值估计与排序框架——端到端自动驾驶规划的生成-打分新范式</title>
      <link>https://auto-driving-blog.vercel.app/posts/paper-reading/%E8%AE%BA%E6%96%87%E7%B2%BE%E8%AF%BB-2605-15120/</link>
      <pubDate>Sat, 18 Jul 2026 00:00:00 +0000</pubDate>
      <guid>https://auto-driving-blog.vercel.app/posts/paper-reading/%E8%AE%BA%E6%96%87%E7%B2%BE%E8%AF%BB-2605-15120/</guid>
      <description>端到端自动驾驶规划器的训练（模仿单条轨迹）与评测（规则化指标）存在根本性错配。CLOVER 提出轻量级生成器-打分器架构，通过构造评估器过滤的伪专家轨迹实现集合级覆盖训练，再以保守闭环自蒸馏交替优化生成器与打分器。在 NAVSIM 上达到 94.5 PDMS 和 90.4 EPDMS，刷新 SOTA，并提供了不完备打分器仍能提升生成器的理论保证。</description>
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