The Dynamic of Belief in the Transferable Belief Model and
  Specialization-Generalization Matrices
  The fundamental updating process in the transferable belief model is related
to the concept of specialization and can be described by a specialization
matrix. The degree of belief in the truth of a proposition is a degree of
justified support. The Principle of Minimal Commitment implies that one should
never give more support to the truth of a proposition than justified. We show
that Dempster's rule of conditioning corresponds essentially to the least
committed specialization, and that Dempster's rule of combination results
essentially from commutativity requirements. The concept of generalization,
dual to thc concept of specialization, is described.
