Algorithms for approximate Bayesian inference, such as those based on sampling (i.e., Monte Carlo methods), provide a natural source of models of how people may deal with uncertainty with limited cognitive resources. Here, we consider the idea that individual differences in working memory capacity (WMC) may be usefully modeled in terms of the number of samples, or “particles,” available to perform inference. To test this idea, we focus on two recent experiments that report positive associations between WMC and two distinct (...) aspects of categorization performance: the ability to learn novel categories, and the ability to switch between different categorization strategies (“knowledge restructuring”). In favor of the idea of modeling WMC as a number of particles, we show that a single model can reproduce both experimental results by varying the number of particles—increasing the number of particles leads to both faster category learning and improved strategy‐switching. Furthermore, when we fit the model to individual participants, we found a positive association between WMC and best‐fit number of particles for strategy switching. However, no association between WMC and best‐fit number of particles was found for category learning. These results are discussed in the context of the general challenge of disentangling the contributions of different potential sources of behavioral variability. (shrink)

This article offers several contributions to the interdisciplinary project of responsible research and innovation in data science and AI. First, it provides a critical analysis of current efforts to establish practical mechanisms for algorithmic auditing and assessment to identify limitations and gaps with these approaches. Second, it provides a brief introduction to the methodology of argument-based assurance and explores how it is currently being applied in the development of safety cases for autonomous and intelligent systems. Third, it generalises this method (...) to incorporate wider ethical, social, and legal considerations, in turn establishing a novel version of argument-based assurance that we call ‘ethical assurance.’ Ethical assurance is presented as a structured method for unifying the myriad practical mechanisms that have been proposed. It is built on a process-based form of project governance that enlists reflective innovation practices to operationalise normative principles, such as sustainability, accountability, transparency, fairness, and explainability. As a set of interlocutory governance mechanisms that span across the data science and AI lifecycle, ethical assurance supports inclusive and participatory ethical deliberation while also remaining grounded in social and technical realities. Finally, this article sets an agenda for ethical assurance, by detailing current challenges, open questions, and next steps, which serve as a springboard to build an active (and interdisciplinary) research programme as well as contribute to ongoing discussions in policy and governance. (shrink)

The Poetic Structure of the World is a major reconsideration of a crucial turning point in Western thought and culture: the heliocentric revolution of Copernicus and Kepler. Fernand Hallyn treats the work of these two figures not simply in terms of the history of science or astronomy, but as events embedded in a wider field of images, symbols, texts, and practices. These new representations of the universe, he insists, cannot be explained by recourse to explanations of "genius" or "intuition."Instead, Hallyn (...) investigates the problem of how new scientific hypotheses are actually formed and the complex way in which certain facts and not others are selected to support a particular theory. He contends that the scientific imagination is not fundamentally different from a mythic or poetic imagination and that the work of Copernicus and Kepler must be examined on the level of rhetorical structure. Hallyn shows the sun-centered universe to be inseparable from the aesthetic, epistemological, theological, and social imperatives of both neoplatonism and mannerism in the sixteenth centuryFernand Hallyn is a Professor in the Department of French Literature at the University of Ghent. Distributed for Zone Books. (shrink)

The Poetic Structure of the World is a major reconsideration of a crucial turning point in Western thought and culture: the heliocentric revolution of Copernicus and Kepler. Fernand Hallyn treats the work of these two figures not simply in terms of the history of science or astronomy, but as events embedded in a wider field of images, symbols, texts, and practices. These new representations of the universe, he insists, cannot be explained by recourse to explanations of "genius" or "intuition."Instead, Hallyn (...) investigates the problem of how new scientific hypotheses are actually formed and the complex way in which certain facts and not others are selected to support a particular theory. He contends that the scientific imagination is not fundamentally different from a mythic or poetic imagination and that the work of Copernicus and Kepler must be examined on the level of rhetorical structure. Hallyn shows the sun-centered universe to be inseparable from the aesthetic, epistemological, theological, and social imperatives of both neoplatonism and mannerism in the sixteenth centuryFernand Hallyn is a Professor in the Department of French Literature at the University of Ghent. Distributed for Zone Books. (shrink)