Community employs formal models in the investigation of changes in belief states and databases

Logic of theory change was the starting-point of a large, rapidly growing literature

Valuable for researchers in logic, philosophy, and artificial intelligence

This book explains how the logic of theory change employs formal models in the investigation of changes in belief states and databases. The topics covered include equivalent characterizations of AGM operations, extended representations of the belief states, change operators not included in the original framework, iterated change, applications of the model, its connections with other formal frameworks, and criticism of the model.

Motivation.- History.- The AGM Model.- Belief Sets.- Equivalent Characterizations.- Safe and Kernel Contraction.- Criticism of the Model.- Belief Bases.- Iterated Change.- Multiple Change.- Extended Representations of Belief States.- Alternative Operators of Change.- Multiagent Belief Change.- Applications and Connections.- Implementations.- Conclusions.- References.