2007 | OriginalPaper | Buchkapitel
Language Invariance and Spectrum Exchangeability in Inductive Logic
verfasst von : Jürgen Landes, Jeff Paris, Alena Vencovská
Erschienen in: Symbolic and Quantitative Approaches to Reasoning with Uncertainty
Verlag: Springer Berlin Heidelberg
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A sufficient condition, in terms of a de Finetti style representation, is given for a probability function in Inductive Logic (with relations of all arities) satisfying Spectrum Exchangeability to additionally satisfy Language Invariance. This condition is shown to also be necessary in the case of homogeneous probability functions. In contrast it is proved that (purely)
t
-heterogeneous probability functions can never be members of a language invariant family satisfying Spectrum Exchangeability.