A edge list of drugs, which is a two-column matrix, each row defines one edge. Numbers in the edge list represent NSC-ID of drugs.
p0
A vector of approved drugs' NSC-ID of interested cancer.
gamma
gamma=0.7(default). A probability of losing when doing Random Walk. On the contray, there is a probability of 1-gamma left to itself. The range of this value is (0, 1).
filename
filename = "ROC.pdf"(default). File name and path where to save the PDF. Filetype is decided by the extension in the path. Currently only .pdf formats are supported.