444 research outputs found
An asymptotic induced numerical method for the convection-diffusion-reaction equation
A parallel algorithm for the efficient solution of a time dependent reaction convection diffusion equation with small parameter on the diffusion term is presented. The method is based on a domain decomposition that is dictated by singular perturbation analysis. The analysis is used to determine regions where certain reduced equations may be solved in place of the full equation. Parallelism is evident at two levels. Domain decomposition provides parallelism at the highest level, and within each domain there is ample opportunity to exploit parallelism. Run time results demonstrate the viability of the method
A Volumetric Assessment of Ancient Maya Architecture: A GIS Approach to Settlement Patterns
This paper will discuss the general applications of GIS technology to our research in the Yalahau Region of northern Quintana Roo, Mexico. In particular we will address the use of a volumetric analysis as a means of developing an architectural comparative framework at both the intrasite and regional scales. The comparative framework is a powerful tool that allows us to investigate and visualize the distribution of social power both within the site of T\u27isil and across the region. The direct relationship between social power and architectural volume is predicated on the assumption that actors who utilized the largest dwellings were able to coerce (or force) the greatest number of people to aid in their construction
Towards a Unified Framework for Adaptable Problematic Content Detection via Continual Learning
Detecting problematic content, such as hate speech, is a multifaceted and
ever-changing task, influenced by social dynamics, user populations, diversity
of sources, and evolving language. There has been significant efforts, both in
academia and in industry, to develop annotated resources that capture various
aspects of problematic content. Due to researchers' diverse objectives, the
annotations are inconsistent and hence, reports of progress on detection of
problematic content are fragmented. This pattern is expected to persist unless
we consolidate resources considering the dynamic nature of the problem. We
propose integrating the available resources, and leveraging their dynamic
nature to break this pattern. In this paper, we introduce a continual learning
benchmark and framework for problematic content detection comprising over 84
related tasks encompassing 15 annotation schemas from 8 sources. Our benchmark
creates a novel measure of progress: prioritizing the adaptability of
classifiers to evolving tasks over excelling in specific tasks. To ensure the
continuous relevance of our framework, we designed it so that new tasks can
easily be integrated into the benchmark. Our baseline results demonstrate the
potential of continual learning in capturing the evolving content and adapting
to novel manifestations of problematic content
Jigsaw @ AMI and HaSpeeDe2: Fine-Tuning a Pre-Trained Comment-Domain BERT Model
The Google Jigsaw team produced submissions for two of the EVALITA 2020Â (Basile et al. 2020) shared tasks, based in part on the technology that powers the publicly available PerspectiveAPI comment evaluation service. We present a basic description of our submitted results and a review of the types of errors that our system made in these shared tasks
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Statistical modeling of corrosion-induced wirebond failure
This paper describes the initial results of one portion of a project to develop effective analytical tools for predicting the effect of atmospheric corrosion on the reliability of electronic devices. The specific objectives of this work were to experimentally characterize the atmospheric corrosion of aluminum-gold wirebonds and to develop a statistical-based model that describes the effect of the resulting stochastic process on the reliability of a selected electronic assembly. The experimental characterization included an attempt at accelerated aging. Modeling involved: (1) the development and validation of empirical models that describe the effects of environmental parameters on corrosion rate, and (2) the formulation and validation of a reliability-prediction model using the accelerated aging data and long-term field information as it becomes available. A preliminary assessment of the effect of three environmental factors on wirebond failure rate was performed and an empirical rate model defined. Subsequently, a statistical treatment of the rate information was used in a Monte Carlo simulation technique to determine the service life of a hypothetical electronic assembly. This work demonstrated that stochastic, corrosion-induced degradation can be successfully incorporated in classical techniques to analyze component reliability. 19 figs., 3 tabs
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