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Tóm tắt:
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BMI's industry forecasts are generated using the best-practice techniques of time-series modelling and causal/econometric modelling. The precise form of model we use varies from industry to industry, in each case being determined, as per standard practice, by the prevailing features of the industry data being examined. BMI mainly uses OLS estimators and, in order to avoid relying on subjective views and encourage the use of objective views, BMI uses a 'general-to-specific' method. BMI mainly uses a linear model, but simple non-linear models, such as the log-linear model, are used when necessary. During periods of 'industry shock', for example a deep industry recession, dummy variables are used to determine the level of impact.
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