| With the development of the technology of internet application, a large of internet information bring convenience to people, it also disturb our daily-life and the network information obsolescence is gradually concerned by people. The network information obsolescence research is important for manager to update information, instructing the website building, expanding the influence of site. The paper introduces the direction of network obsolescence research, the reasons of network obsolescence, the characteristics of network obsolescence, the types of network obsolescence. The first time apply regression analysis method on the network obsolescence. Related researches are as follows:1 Introduce the background of network obsolescence and the significance and development status of network obsolescence. It points that network obsolescence at the early research stage. Theory system and methods are in the stage of exploration. It also points the paper research ideas and innovation.2 The paper summary network obsolescence.3 The paper summary the evaluating index of network obsolescence. Include two parts. On the one hand is lifecycle,including static half-life and dynamic half-life;On the other hand is value cycle, including macro half-life and micro half-life. The paper uses half-life to empirical research.4 The paper chooses 10 key Journals of and Information Science in China as sample, and uses regression analysis method to research.5 Analyzes the feasibility and advantage of regression analysis. Then points out the existing problems.6 Summarizes the paper, and points the shortcomings.The purpose of paper is applied evaluating index to building regression analysis method, and providing reference for network obsolescence. |