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3.1.2 Logistic Function The growth rate is then incorporated into a logistic function to predict future user growth. Logistic function is important in understanding and depicting the evolution of user growth. It provides a means for predicting future user growth of Internet companies. Prior research has shown that the growth of user base follows the natural growth law, an S-shaped logistic curve (Cauwels & Sornette, 2012). A standard logistic function is often written as: π(π₯)=1+π πΏ βπβ(π₯βπ₯0) Replacing the parameters with user-growth specific ones, we get: π(π‘) = 1 + π πΎ βπβ(π‘βπ‘0) (3.9) (3.10) Where t represents different time periods, P(t) represents the user amount over time, r refers to the initial growth rate, and K refers to the maximum carrying capacity. Therefore, setting t=0, we get: π(0)=π = πΎ 0 1 + πβπβ(π‘βπ‘0) By rearranging the terms in the equation, we get: πππ‘ =πΎβ1 0 π = πΎ 1 + πππ‘0 (3.11) (3.12) 0 - 20 -PDF Image | Analysis of ByteDance with a close look on Douyin TikTok
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