A procedure in which one asks experts to describe, from memory, the steps they take in making decisions or forecasts. This can be used for developing <a href="search.pl?p=expert systems">expert systems</a>, as discussed in Collopy, Adya and Armstrong (2001).<o:p></o:p></P>
<ul>
  <li><SPAN </P>Collopy, F., M. Adya &amp; J. S. Armstrong (2001), 
"Expert systems for forecasting,” in J. S. Armstrong (ed.), <I>Principles of 
Forecasting.</I> Norwell, MA: Kluwer Academic Press.</SPAN></li>
</ul>