Table 2.

The list of symbols and notations used in this paper

Symbol	Description
	; set of cell lines
	; set of drugs
	Drug response matrix (main input),
	Predicted drug response value (output), (It might be real value or binary value, depends on the problem.)
	General notation for similarity matrix
	Cell line similarity matrix,
	Drug similarity matrix,
	Target similarity matrix,
	Low-rank representation of cell lines,
	Low-rank representation of drugs,
	Feature matrix, , (side information representing features separately from similarity matrices)
	Low-rank representation of feature matrix,
	Projection matrix for dimensionality reduction
	Bias term matrix for drugs and cell lines
	General notation for a kernel matrix
	Cell line kernel matrix,
	Drug kernel matrix,
	Kernel weights; , number of matrices.
	Drug target interaction matrix,