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  1.  42
    Against Relative Overlap Measures of Coherence.Jakob Koscholke & Michael Schippers - 2016 - Synthese 193 (9).
    Coherence is the property of propositions hanging or fitting together. Intuitively, adding a proposition to a set of propositions should be compatible with either increasing or decreasing the set’s degree of coherence. In this paper we show that probabilistic coherence measures based on relative overlap are in conflict with this intuitive verdict. More precisely, we prove that according to the naive overlap measure it is impossible to increase a set’s degree of coherence by adding propositions and that according to the (...)
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  2.  35
    Evaluating Test Cases for Probabilistic Measures of Coherence.Jakob Koscholke - 2016 - Erkenntnis 81 (1):155-181.
    How can we determine the adequacy of a probabilistic coherence measure? A widely accepted approach to this question besides formulating adequacy constraints is to employ paradigmatic test cases consisting of a scenario providing a joint probability distribution over some specified set of propositions coupled with a normative coherence assessment for this set. However, despite the popularity of the test case approach, a systematic evaluation of the proposed test cases is still missing. This paper’s aim is to change this. Using a (...)
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  3.  33
    Probabilistic Coherence Measures: A Psychological Study of Coherence Assessment.Jakob Koscholke & Marc Jekel - 2017 - Synthese 194 (4).
    Over the years several non-equivalent probabilistic measures of coherence have been discussed in the philosophical literature. In this paper we examine these measures with respect to their empirical adequacy. Using test cases from the coherence literature as vignettes for psychological experiments we investigate whether the measures can predict the subjective coherence assessments of the participants. It turns out that the participants’ coherence assessments are best described by Roche’s coherence measure based on Douven and Meijs’ average mutual support approach and the (...)
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  4.  5
    New Hope for Relative Overlap Measures of Coherence.Jakob Koscholke, Michael Schippers & Alexander Stegmann - forthcoming - Mind:fzy037.
    Relative overlap measures of coherence have recently been shown to have two devastating properties: according to the plain relative overlap measure, the degree of coherence of any set of propositions cannot be increased by adding further propositions, and according to the refined relative overlap measure, no set can be more coherent than its most coherent two-element subset. This result has been taken to rule out relative overlap as a foundation for a probabilistic explication of coherence. The present paper shows that (...)
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  5.  10
    On the Pareto Condition on Permissible Belief.Jakob Koscholke - forthcoming - Erkenntnis:1-6.
    Thomas Kroedel has recently proposed an interesting Pareto-style condition on permissible belief. Despite the condition’s initial plausibility, this paper aims at providing a counterexample to it. The example is based on the view that a proper condition on permissible belief should not give permission to believe a proposition that undermines one’s belief system or whose epistemic standing decreases in the light of one’s de facto beliefs.
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  6.  12
    Coherence and Common Causes: Against Relevance-Sensitive Measures of Coherence.Jakob Koscholke & Michael Schippers - forthcoming - British Journal for the Philosophy of Science:axx003.
    Changing weather conditions and barometer changes usually coincide. Accordingly, the propositions that my barometer falls and that the weather conditions deteriorate are quite coherent—especially under the assumption that there is a drop in atmospheric pressure. Nevertheless, scenarios like these involving common causes turn out to be highly problematic for a prominent class of probabilistic coherence measures, namely, those explicating coherence based on the idea of relevance-sensitivity. In this article, we show that none of these measures accords with the intuition that (...)
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  7.  3
    A Weak Symmetry Condition for Probabilistic Measures of Confirmation.Jakob Koscholke - 2018 - Philosophical Studies 175 (8):1927-1944.
    This paper presents a symmetry condition for probabilistic measures of confirmation which is weaker than commutativity symmetry, disconfirmation commutativity symmetry but also antisymmetry. It is based on the idea that for any value a probabilistic measure of confirmation can assign there is a corresponding case where degrees of confirmation are symmetric. It is shown that a number of prominent confirmation measures such as Carnap’s difference function, Rescher’s measure of confirmation, Gaifman’s confirmation rate and Mortimer’s inverted difference function do not satisfy (...)
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  8.  21
    Carnap’s Relevance Measure as a Probabilistic Measure of Coherence.Jakob Koscholke - 2017 - Erkenntnis 82 (2):339-350.
    Tomoji Shogenji is generally assumed to be the first author to have presented a probabilistic measure of coherence. Interestingly, Rudolf Carnap in his Logical Foundations of Probability discussed a function that is based on the very same idea, namely his well-known relevance measure. This function is largely neglected in the coherence literature because it has been proposed as a measure of evidential support and still is widely conceived as such. The aim of this paper is therefore to investigate Carnap’s measure (...)
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