English(EN) The Reverse Telescoping Coordinate System for Positive Definite Matrices: Geometry, Computation, and Generative Modeling

新的坐标系简化了SPD矩阵计算和生成式建模

作者 PulseAugur 编辑部 · [2 个来源] · 2026-06-13 19:18

研究人员开发了一种名为反向伸缩坐标系的新型坐标系，用于表示对称正定（SPD）矩阵。该系统允许在变换域中更有效地执行涉及矩阵及其逆的计算，将成本从O(p^3)降低到O(p^2)。新方法还通过实现分裂体积-形状流模型来促进生成式建模，并已应用于从fMRI数据生成大脑连接网络等任务。 AI

影响这种新的坐标系可以简化诸如大脑连接网络等复杂数据结构的生成式建模。

排序理由该集群包含一篇详细介绍新的数学和计算方法的学术论文。

AI 生成摘要 · Google Gemini · 来自 2 个来源。我们如何撰写摘要 →

报道来源 [2]

arXiv cs.LG TIER_1 English(EN) · Anindya Bhadra · 2026-06-16 04:00

The Reverse Telescoping Coordinate System for Positive Definite Matrices: Geometry, Computation, and Generative Modeling

arXiv:2606.15442v1 Announce Type: cross Abstract: We design a new unconstrained coordinate system where a $p\times p$ symmetric positive definite (SPD) matrix $\Theta$ is represented by a reverse telescoping map $\Theta(x)=\rm{RT}(x)$, with $x=(v,d,r)\in\mathbb{R}\times\mathbb{R}…
arXiv stat.ML TIER_1 English(EN) · Anindya Bhadra · 2026-06-13 19:18

The Reverse Telescoping Coordinate System for Positive Definite Matrices: Geometry, Computation, and Generative Modeling

We design a new unconstrained coordinate system where a $p\times p$ symmetric positive definite (SPD) matrix $Θ$ is represented by a reverse telescoping map $Θ(x)=\rm{RT}(x)$, with $x=(v,d,r)\in\mathbb{R}\times\mathbb{R}^{(p-1)}\times\mathbb{R}^{p(p-1)/2}$, representing respectiv…