This dissertation defends an ideal of democratic citizenship inspired by John Dewey’s theory of human flourishing, or “growth.” In its emphasis on the interrelatedness of individual development and social progress, Deweyan growth orients us toward a morally substantive approach to addressing the important question of how diverse citizens can live together well. I argue, however, that Dewey’s understanding of growth as a process by which conflicting interests, beliefs, and values are integrated into a more unified whole—both within the community and (...) within the self—is inadequate to the radical pluralism characteristic of contemporary liberal democratic societies. Given the pragmatist insight into the crucial role of socialization in identity formation, the problem with conceptualizing the ideal self as an integrated unity is that, for many, the complexity and diversity of our social world presents an insuperable obstacle to sustaining a unified (or always unifying) self. Most of us have multiple “selves” forged by the various groups with whom we identify and the often incongruous roles we play in our personal, professional, and/or public lives. Hence I offer a reconstruction of Deweyan growth that accounts for persistent yet positively valued diversity, both within the self and within the community. On the view I urge, which draws on the work of neopragmatist Richard Rorty and Chicana feminist Gloria Anzaldua, divisions within the self and between citizens are not merely problems always to be overcome, but potential resources for creating a stronger, more inclusive democracy. (shrink)

Previous work has shown that the Complex Conceptual Spaces − Single Observation Mathematical framework is a useful tool for event characterization. This mathematical framework is developed on the basis of Conceptual Spaces and uses integer linear programming to find the needed similarity values. The work of this paper is focused primarily on space event characterization. In particular, the focus is on the ranking of threats for malicious space events such as a kinetic kill. To make the Conceptual Spaces framework work, (...) the similarity values between the contents of observations on the one hand and the properties of the entities observed on the other needs to be found. This paper shows how to exploit Dempster-Shafer theory to implement a statistical approach for finding these similarities values. This approach will allow a user to identify the uncertainty involved in similarity value data, which can later be propagated through the developed mathematical model in order for the user to know the overall uncertainty in the observation-to-concept mappings needed for space event characterization. (shrink)

This paper is concerned with representations of belief by means of nonadditive probabilities of the Dempster-Shafer (DS) type. After surveying some foundational issues and results in the D.S. theory, including Suppes's related contributions, the paper proceeds to analyze the connection of the D.S. theory with some of the work currently pursued in epistemic logic. A preliminary investigation of the modal logic of belief functions à la Shafer is made. There it is shown that the Alchourrron-Gärdenfors-Makinson (A.G.M.) logic of belief (...) change is closely related to the D.S. theory. The final section compares the critique of Bayesianism which underlies the present paper with some important objections raised by Suppes against this doctrine. -/- . (shrink)

Weisberg introduces a phenomenon he terms perceptual undermining. He argues that it poses a problem for Jeffrey conditionalization, and Bayesian epistemology in general. This is Weisberg’s paradox. Weisberg argues that perceptual undermining also poses a problem for ranking theory and for Dempster-Shafer theory. In this note I argue that perceptual undermining does not pose a problem for any of these theories: for true conditionalizers Weisberg’s paradox is a false alarm.