<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/"><channel><title>Philosophy on Xu'Blog</title><link>https://xuquant.com/tags/philosophy/</link><description>Recent content in Philosophy on Xu'Blog</description><image><title>Xu'Blog</title><url>https://xuquant.com/og-default.png</url><link>https://xuquant.com/og-default.png</link></image><generator>Hugo -- 0.152.2</generator><language>zh</language><lastBuildDate>Sat, 07 Mar 2026 10:00:00 +0800</lastBuildDate><atom:link href="https://xuquant.com/tags/philosophy/index.xml" rel="self" type="application/rss+xml"/><item><title>从 2D 到 4D：视觉表征的本体论问题</title><link>https://xuquant.com/posts/world-models/vision-2d-to-4d/</link><pubDate>Sat, 07 Mar 2026 10:00:00 +0800</pubDate><guid>https://xuquant.com/posts/world-models/vision-2d-to-4d/</guid><description>4D 视觉表征的本体论之辨：4D = 3D + 时间，还是 4D = 多视角 + 几何？为什么 4D 是 world model 的关键？spatial-temporal joint 与 decoupled 在表征几何上意味着什么？本文是 world model 哲学方向的讨论，工程实现见 4D Vision Encoder for Autonomous Driving。</description></item></channel></rss>