关于神经表征的一般化形状指标
Alex H Williams1, Erin Kunz2, Simon Kornblith3
1Statistics Department, Stanford University.
Advances in neural information processing systems
|January 3, 2024
概括
研究人员开发了新的方法来比较跨生物和人工系统的神经网络表示. 这些工具有助于理解网络特征如何影响信息处理,揭示了对大脑和人工智能功能的洞察.
科学领域:
- 计算神经科学是一种神经科学.
- 机器学习 机器学习
- 系统神经科学 系统神经科学
背景情况:
- 了解生物和人工神经网络至关重要,但具有挑战性.
- 在不同的架构和生物体中比较网络表示需要标准化的工具.
- 网络层面的因素,如建筑和大脑区域,影响神经表征.
研究的目的:
- 为分析神经网络中的表示不相似性提供一个严格的框架.
- 开发标准化分析工具,用于在不同系统中比较神经表征.
- 调查网络层面的共变量如何影响神经表征.
主要方法:
- 定义了一系列的度量空间来量化表示不相似性.
- 修改了现有的表示相似度 (法定相关性分析,中心内核对齐) 以满足三角形不等式.
- 制定了卷积层的新型度量,并开发了近似的欧几里德嵌入,用于将网络表示集成到机器学习方法中.
主要成果:
- 在大型生物 (艾伦研究所大脑观测中心) 和深度学习 (NAS-Bench-101) 数据集上展示了开发的方法.
- 识别了可解释的神经表征之间的关系.
- 展示了解剖特征和模型性能如何与神经表征相关.
结论:
- 拟议的度量空间框架为分析神经表示提供了坚实的基础.
- 开发的工具使生物和人工网络中神经表示的标准比较成为可能.
- 这些方法有助于更深入地了解大脑和人工系统中的信息处理.
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