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    • Statistical models strongly-invariant under the action of a group 

      García Nogales, Agustín (Universitat Politècnica de Catalunya. Centre de Càlcul, 1990)
      Article
      Open Access
      Some basic results about invariance are given using quotient σ-fields. A strong kind of invariance is considered. Under appropriate conditions we obtain a sufficient statistics for models with such an invariance property.