Hyperplane Machine Learning; Optimization Foundations
noun
Definition: A flat affine subspace of dimension n− in an n-dimensional space. In machine learning, a hyperplane often denotes a decision surface that separates classes, for example in linear classifiers and support vector machines [Trunz 2023].
Example in context: “On the Universal Truthfulness Hyperplane Inside LLMs.” [Liu et al. 2024]
Related terms: decision hyperplane; separating plane; decision boundary