用PCA和二进制粒子群优化减少模糊系统规则数,提升低维数据可解释性。
Rule-Based Modeling of Low-Dimensional Data with PCA and Binary Particle Swarm Optimization (BPSO) in ANFIS
- 先用PCA处理模糊激活强度,再用BPSO筛选关键特征组合
- 规则数量大幅减少,训练更快,准确率仍保持高位
- 适合医疗、金融等需可解释AI的场景
模糊规则系统在低维数据中具备可解释性优势,而深度学习在稀疏或低维数据中易过拟合。传统ANFIS系统因网格划分导致规则数量随维度指数增长。本文提出一种规则压缩模型:对归一化激活强度进行主成分分析(PCA),提取线性无关分量;再通过二进制粒子群优化(BPSO)选择关键分量,显著降低规则数并维持决策精度。引入自定义参数更新机制,动态调整BPSO参数以避免局部最优。在标准UCI呼吸、船体分类、回归数据集及真实缺血性中风数据集上验证,结果表明规则更少、训练时间更短、准确率高,证明方法在低维可解释性与复杂数据场景中的适应性与实用性。该模糊逻辑与优化结合的方法为多领域可解释人工智能提供了强大框架。
原文摘要 · Abstract (English)
Fuzzy rule-based systems interpret data in low-dimensional domains, providing transparency and interpretability. In contrast, deep learning excels in complex tasks like image and speech recognition but is prone to overfitting in sparse, unstructured, or low-dimensional data. This interpretability is crucial in fields like healthcare and finance. Traditional rule-based systems, especially ANFIS with grid partitioning, suffer from exponential rule growth as dimensionality increases. We propose a strategic rule-reduction model that applies Principal Component Analysis (PCA) on normalized firing strengths to obtain linearly uncorrelated components. Binary Particle Swarm Optimization (BPSO) selectively refines these components, significantly reducing the number of rules while preserving precision in decision-making. A custom parameter update mechanism fine-tunes specific ANFIS layers by dynamically adjusting BPSO parameters, avoiding local minima. We validated our approach on standard UCI respiratory, keel classification, regression datasets, and a real-world ischemic stroke dataset, demonstrating adaptability and practicality. Results indicate fewer rules, shorter training, and high accuracy, underscoring the methods effectiveness for low-dimensional interpretability and complex data scenarios. This synergy of fuzzy logic and optimization fosters robust solutions. Our method contributes a powerful framework for interpretable AI in multiple domains. It addresses dimensionality, ensuring a rule base.
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