Tree architecture is always leveraged in decision theory. SVM with
binary tree architecture has been introduced to reduce the number of
binary classifiers and achieve a fast decision [19]. However, due to the
requirement of high classification accuracy and good generalization
capacity of binary-tree SVM classifier, it is still an issue when only
small-size samples are available for hyperspectral RS images. To address
these issues, various SVMs with binary tree architecture have
been investigated to reduce the amounts of binary classifiers for
time saving and fast decision