摘要Background: It is a challenge for plants to deal with the current environment conditions which include drought, salt, cold, osmotic press, UV-B light and so on.Among the plant genes, there must have some genes responding to the above abiotic stresses.So, it is important and challenges to extract the interacting genes responding to each abiotic stress in plant gene expression data.A large number of mathematical methods, for example, principal component analysis, penalized matrix decomposition, singular value decomposition and non-negative matrix factorization, have been used to analyze gene expression data.
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