The dilation phenomenon in robust Bayesian inference *

  title={The dilation phenomenon in robust Bayesian inference *},
  author={Larry A. Wasserman and Teddy Seidenfeld},
Upper and lower probabilities may become uniformly less precise after conditioning. We call this dilation. We review some results about dilation, present some examples and explore the effect of Bayesian updating. Also, we show a connection between dilation and nonconglomerability. Finally, we consider the implications of this phenomenon. AMS Subject Classifications: Primary 62F15; Secondary 62F35 

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