The complex system in real life is regarded as the network structure, then the individuals in the system are the nodes in the network, and the relationship between individuals can be expressed by connecting edges. The complex network will change with time, and the information contained in it will change constantly. The edges in the network are the effective carrier of information interaction between individuals, so it is very important to dig deep and analyze them effectively. As an important means of mining network connection information, link prediction can not only master more hidden information from it, but also discover missing information in the research. It is a common way to complete the incomplete network. In the process of being included in the prediction technology research, researchers have put forward a variety of application algorithms, among which the most representative is the link prediction method based on similarity. Therefore, on the basis of determining the link prediction and technology research status of complex network, this paper puts forward a new method to calculate node weight and path weight, and combines them together for experimental analysis. The final results show that the algorithm is more accurate and effective in practice.
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