21,755 research outputs found
Setting the Backdrop: Analyzing the Collection and Implementation of Cross-Cultural Research in Screenwriting Setting Development
Undergraduate
Creative and Artisti
A Generative Model for Score Normalization in Speaker Recognition
We propose a theoretical framework for thinking about score normalization,
which confirms that normalization is not needed under (admittedly fragile)
ideal conditions. If, however, these conditions are not met, e.g. under
data-set shift between training and runtime, our theory reveals dependencies
between scores that could be exploited by strategies such as score
normalization. Indeed, it has been demonstrated over and over experimentally,
that various ad-hoc score normalization recipes do work. We present a first
attempt at using probability theory to design a generative score-space
normalization model which gives similar improvements to ZT-norm on the
text-dependent RSR 2015 database
Voter models with heterozygosity selection
This paper studies variations of the usual voter model that favor types that
are locally less common. Such models are dual to certain systems of branching
annihilating random walks that are parity preserving. For both the voter models
and their dual branching annihilating systems we determine all homogeneous
invariant laws, and we study convergence to these laws started from other
initial laws.Comment: Published in at http://dx.doi.org/10.1214/07-AAP444 the Annals of
Applied Probability (http://www.imstat.org/aap/) by the Institute of
Mathematical Statistics (http://www.imstat.org
Systems of branching, annihilating, and coalescing particles
This paper studies systems of particles following independent random walks
and subject to annihilation, binary branching, coalescence, and deaths. In the
case without annihilation, such systems have been studied in our 2005 paper
"Branching-coalescing particle systems". The case with annihilation is
considerably more difficult, mainly as a consequence of the non-monotonicity of
such systems and a more complicated duality. Nevertheless, we show that adding
annihilation does not significantly change the long-time behavior of the
process and in fact, systems with annihilation can be obtained by thinning
systems without annihilation
The Brownian net
The (standard) Brownian web is a collection of coalescing one- dimensional
Brownian motions, starting from each point in space and time. It arises as the
diffusive scaling limit of a collection of coalescing random walks. We show
that it is possible to obtain a nontrivial limiting object if the random walks
in addition branch with a small probability. We call the limiting object the
Brownian net, and study some of its elementary properties.Comment: Published in at http://dx.doi.org/10.1214/07-AOP357 the Annals of
Probability (http://www.imstat.org/aop/) by the Institute of Mathematical
Statistics (http://www.imstat.org
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