4,723 research outputs found
Results Visualization in the XBrain XML Interface to a Relational Database
The University of Washington's XBrain application is used to dynamically export relational data over the web in XML format, as a prelude to data exchange. We describe additional tools to aid the human user in visualizing the dynamically generated XML results returned by the web application
How Algorithmic Confounding in Recommendation Systems Increases Homogeneity and Decreases Utility
Recommendation systems are ubiquitous and impact many domains; they have the
potential to influence product consumption, individuals' perceptions of the
world, and life-altering decisions. These systems are often evaluated or
trained with data from users already exposed to algorithmic recommendations;
this creates a pernicious feedback loop. Using simulations, we demonstrate how
using data confounded in this way homogenizes user behavior without increasing
utility
Co-actions, Isometries and isomorphism classes of Hilbert modules
We show that a A-linear map of Hilbert A-modules is induced by a unitary
Hilbert module operator if and only if it extends to an ordinary unitary on
appropriately defined enveloping Hilbert spaces. Applications to the theory of
multiplicative unitaries compute the equivalence classes of Hilbert modules
over a class of C*- algebraic quantum groups. We thus develop a theory that for
example could be used to show non-existence of certain co-actions. In
particular, we show that the Cuntz semigroup functor takes a co-action to a
multiplicative action
- …