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  1.  85
    Probabilistic Opinion Pooling with Imprecise Probabilities.Rush T. Stewart & Ignacio Ojea Quintana - 2018 - Journal of Philosophical Logic 47 (1):17-45.
    The question of how the probabilistic opinions of different individuals should be aggregated to form a group opinion is controversial. But one assumption seems to be pretty much common ground: for a group of Bayesians, the representation of group opinion should itself be a unique probability distribution, 410–414, [45]; Bordley Management Science, 28, 1137–1148, [5]; Genest et al. The Annals of Statistics, 487–501, [21]; Genest and Zidek Statistical Science, 114–135, [23]; Mongin Journal of Economic Theory, 66, 313–351, [46]; Clemen and (...)
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  2.  42
    Learning and Pooling, Pooling and Learning.Rush T. Stewart & Ignacio Ojea Quintana - 2018 - Erkenntnis 83 (3):1-21.
    We explore which types of probabilistic updating commute with convex IP pooling. Positive results are stated for Bayesian conditionalization, imaging, and a certain parameterization of Jeffrey conditioning. This last observation is obtained with the help of a slight generalization of a characterization of externally Bayesian pooling operators due to Wagner :336–345, 2009). These results strengthen the case that pooling should go by imprecise probabilities since no precise pooling method is as versatile.
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  3.  28
    On Semantic Gamification.Ignacio Ojea Quintana - 2017 - In S. Ghosh & S. Prasad (eds.), Logic and its Applications, Lecture Notes in Computer Science 10119. Springer.
    The purpose of this essay is to study the extent in which the semantics for different logical systems can be represented game theoretically. I will begin by considering different definitions of what it means to gamify a semantics, and show completeness and limitative results. In particular, I will argue that under a proper definition of gamification, all finitely algebraizable logics can be gamified, as well as some infinitely algebraizable ones (like Łukasiewicz) and some non-algebraizable (like intuitionistic and van Fraassen supervaluation (...)
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  4. The Evolution of Vaccine Discourse on Twitter During the First Six Months of COVID-19.Ignacio Ojea Quintana, Colin Klein, Marc Cheong, Emily Sullivan, Ritsaart Reimann & Mark Alfano - manuscript
    Trust in vaccination is eroding, and attitudes about vaccination have become more polarized. To shed light on the evolution of social media discourse about vaccines in the context of the COVID pandemic, we conducted an observational study of Twitter vaccine discourse 75 days prior to and after the World Health Organization’s 11 March 2020 pandemic declaration. We report four main findings. First, the amount of vaccine discourse greatly increased over the course of the pandemic. Second, the two existing vaccine-focused camps (...)
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