subspace

ORRLS法以保证所得特矢量矩阵具有正交，以自适应地估计子空间维数。

ORRLS algorithm can guarantee orthonormality of the weight matrix in iteration.Moreover, it can track the rank of interference subspace.

Then in the subspace，the hypersphere containing almost training data with minimum radius is found as decision hypersphere for novel detection.

在该子空间中，通过优化方法寻找包含训练数据的最小超平面，作为新颖检测的决策界面。

These observations allow one to formalize the definition of reflection: a reflection is an involutive isometry of an Euclidean space whose set of fixed points is an affine subspace of codimension 1.

这些观察允许我们形式化反射的定义: 反射是欧几里得空间的对合等距同构，它的不动点集合是余维度为 1 的仿射子空间。