Description: Time Decay is a fundamental concept in predictive analytics that refers to the decreasing relevance of data as it becomes older. This phenomenon is based on the premise that recent information is often more representative of current trends and therefore carries greater weight in decision-making. In the context of predictive modeling, time decay allows models to adjust for this variability in the importance of data over time. This translates into greater accuracy in predictions, as models can adapt to changes in system behavior or the environment. Key characteristics of time decay include the ability to assign different weights to data based on its age and the implementation of statistical techniques that allow for modeling this relationship. This approach is particularly relevant in fields where conditions change rapidly, such as market analysis, demand forecasting, and fraud detection. By integrating time decay into models, organizations can enhance their ability to anticipate future events and respond more effectively to environmental dynamics.