Volume 23 Issue 3 (July-September 2007)

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Judgement in Forecasting
edited by Mathew Parackal, Paul Goodwin, Marcus O'Connor

Structured analogies for forecasting

Green, K.C. , Armstrong, J.S.
Pages 365-376
Abstract

People often use analogies when forecasting, but in an unstructured manner. We propose a structured judgmental procedure whereby experts list analogies, rate their similarity to the target, and match outcomes with possible target outcomes. An administrator would then derive a forecast from the information. When predicting decisions made in eight conflict situations, unaided experts' forecasts were little better than chance, at 32% accurate. In contrast, 46% of structured-analogies forecasts were accurate. Among experts who were able to think of two or more analogies and who had direct experience with their closest analogy, 60% of forecasts were accurate. Collaboration did not help.

Keywords: Availability , Case-based reasoning , Comparison , Decision , Method
FULL TEXT LINK
http://dx.doi.org/10.1016/j.ijforecast.2007.05.005
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