arXiv:2507.11106math.OCcs.LG2025-07被引 1

用数学优化方法构建多球模型,精准识别多模态数据中的异常点。

A Mathematical Optimization Approach to Multisphere Support Vector Data Description

  • 基于混合整数二次锥规划,构造欧氏超球检测异常。
  • 引入核技巧的对偶模型,可处理非线性复杂数据结构。
  • 在准确性和鲁棒性上显著优于传统启发式方法。

我们提出一种新的数学优化框架,用于多模态数据集中的异常检测,扩展了支持向量数据描述方法。该方法提供一个原始公式,以混合整数二次锥模型形式构建欧氏超球,识别异常观测。在此基础上,我们开发了对偶模型,使核技巧得以应用,从而能够检测复杂非线性数据结构中的异常。大量计算实验表明,我们的精确方法在准确性和鲁棒性方面明显优于现有启发式技术。

原文摘要 · Abstract (English)

We present a novel mathematical optimization framework for outlier detection in multimodal datasets, extending Support Vector Data Description approaches. We provide a primal formulation, in the shape of a Mixed Integer Second Order Cone model, that constructs Euclidean hyperspheres to identify anomalous observations. Building on this, we develop a dual model that enables the application of the kernel trick, thus allowing for the detection of outliers within complex, non-linear data structures. An extensive computational study demonstrates the effectiveness of our exact method, showing clear advantages over existing heuristic techniques in terms of accuracy and robustness.

异常检测优化建模支持向量

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