Method for identifying key protein based on genetic algorithm in PPI network
A technology of PPI network and genetic algorithm, applied in the field of bioinformatics, can solve problems such as high or only a representative of a local vertex, low accuracy of key proteins, and no consideration of biological information, etc., to reduce calculations, improve efficiency, The effect of expanding the scope of application and practicality
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[0018] 1. Step description
[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0020] Enter the PPI network and bio information first, then
[0021] Step (1): Generate an initial protein population
[0022] Since the criticality of a protein is closely related to the corresponding vertex degree, the initial population is generated based on the P proteins with the highest vertex degree, and the protein is encoded. In order to prevent the localization of the population and increase its diversity, in the initial population Then randomly replace a part of the protein. Let U be the set of P vertices with the highest degree in the protein set V, the maximum degree of the vertices in U is maxd, and the minimum degree is mind; let the degree of each protein v be d v , define h v =(maxd-d v ) / (maxd-mind), generate a random number r between (0, 1), if rv , then select a random vertex in V-U to jo...
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