Philipp Rohlfshagen and Joanna J. Bryson, Cognitive Computation, 2(3):230-241, 2010.
Discusses a simple add-on mechanism for dynamic plans to allow sensible ordering of high-level drives, and explains why this problem is different from detailed action selection. Lots of experiments, some maths and some discussion of the literature on cognitive control in natural and artificial intelligence. Associated software comes with the standard python/jython distribution of BOD.
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