Logically-consistent hypothesis testing and the hexagon of oppositions

Logic Journal of the IGPL 25 (5):741-757 (2017)
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Abstract

Although logical consistency is desirable in scientific research, standard statistical hypothesis tests are typically logically inconsistent. To address this issue, previous work introduced agnostic hypothesis tests and proved that they can be logically consistent while retaining statistical optimality properties. This article characterizes the credal modalities in agnostic hypothesis tests and uses the hexagon of oppositions to explain the logical relations between these modalities. Geometric solids that are composed of hexagons of oppositions illustrate the conditions for these modalities to be logically consistent. Prisms composed of hexagons of oppositions show how the credal modalities obtained from two agnostic tests vary according to their threshold values. Nested hexagons of oppositions summarize logical relations between the credal modalities in these tests and prove new relations.

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Julio Michael Stern
University of São Paulo

References found in this work

The power of the hexagon.Jean-Yves Béziau - 2012 - Logica Universalis 6 (1-2):1-43.
Sur l'opposition des concepts.Robert Blanche - 1953 - Theoria 19 (3):89-130.
Semantics of Non-deterministic Character for LFIs.Marcelo Coniglio & Walter Carnielli - 2016 - In Walter Carnielli & Marcelo Esteban Coniglio (eds.), Paraconsistent Logic: Consistency, Contradiction and Negation. Basel, Switzerland: Springer International Publishing.

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