Human-like Math Capability

Humans often solve arithmetic problems the "long way". The optimal bit-based methods of the computer are not natural and, as such, not employed by humans. Several psychological experiments have been performed showing that, not only are the arithmetic operations used by humans not optimal, but the long-hand algorithms can be suboptimal and sometimes inconsistent. Some humans classify problems before approaching them (even the classifications can be inconsistent) and use a personal method that varies consistently with the class of problem.

Kurt VanLehn argues that a non-Last-In, First-Out (LIFO) goal reconstruction technique can reproduce this behavior. An essential component to the reproduction of this behavior is that goals cannot be managed by a LIFO stack. VanLehn's Teton architecture was designed specifically to model these types of behaviors. Additionally, the Soar architecture has also been applied to the cognitively-plausible solution of math problems.


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