The pigment of purple sweet potato ( PPSP ) is water-soluble natural pigment .
紫心番薯色素（PPSP）为水溶性天然色素。
For example , we construct GPS and PPSP for phosphorylation site prediction , based on GPS and Bayesian Decision Theory algorithms , respectively .
例如，我们使用GPS和贝叶斯决策理论算法，分别构建了预测蛋白质磷酸化位点的GPS和PPSP网站。
ppsp