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IBM® Cognos® TM1: The Official Guide by Christopher Ilacqua, Karsten Oehler, Jochen Gruenes

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20
CHAPTER
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Driver-Based Planning with Rolling Forecast
Forecasting is an important task within the planning process. It is a natural preparation step for all kinds of planning. Although we can’t predict the future, forecasting gives us a better understanding of possible dependencies and thus helps us to be prepared for future events. You can do this intuitively by contemplating, or mathematically based on drivers, or with statistical calculations. All of these methods are used in planning processes in conjunction with other methods: You start with a statistical calculation and then do manual modification because you have additional information, ...

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