303 research outputs found
What is the effect of technological shocks? A natural experiment from manufacturing industry in the United States of America from 2000 to 2010
This research studies from a firm level experiment in which we explored an exogenous technological change in firm's productivity. We present evidence from the manufacturing industry in the United States of America from 2000 to 2010, when the artificial intelligence are widely introduced across manufacturing sector. The result suggests that positive technological shocks affect the productivity in a positive way. Analysis of the data shows that the sector effect and the geographical effect exist but both are limited. These results highlight the universal impact of technological shocks and the interplay among innovations, firms and employees
SURE: SUrvey REcipes for building reliable and robust deep networks
In this paper, we revisit techniques for uncertainty estimation within deep
neural networks and consolidate a suite of techniques to enhance their
reliability. Our investigation reveals that an integrated application of
diverse techniques--spanning model regularization, classifier and
optimization--substantially improves the accuracy of uncertainty predictions in
image classification tasks. The synergistic effect of these techniques
culminates in our novel SURE approach. We rigorously evaluate SURE against the
benchmark of failure prediction, a critical testbed for uncertainty estimation
efficacy. Our results showcase a consistently better performance than models
that individually deploy each technique, across various datasets and model
architectures. When applied to real-world challenges, such as data corruption,
label noise, and long-tailed class distribution, SURE exhibits remarkable
robustness, delivering results that are superior or on par with current
state-of-the-art specialized methods. Particularly on Animal-10N and Food-101N
for learning with noisy labels, SURE achieves state-of-the-art performance
without any task-specific adjustments. This work not only sets a new benchmark
for robust uncertainty estimation but also paves the way for its application in
diverse, real-world scenarios where reliability is paramount. Our code is
available at \url{https://yutingli0606.github.io/SURE/}.Comment: Accepted to CVPR202
On hydrodynamic characteristics of gap resonance between two fixed bodies in close proximity
The resonant water motion inside a narrow gap between two identical fixed boxes that are in side-by-side configuration is investigated using a two-dimensional (2D) numerical wave tank based on OpenFOAM®, an open source CFD package. Gap resonance is excited by regular waves with various wave heights, ranging from linear waves to strong nonlinear waves. This paper mainly focuses on the harmonic analyses of the free-surface elevation in the narrow gap and wave loads (including the horizontal wave forces, the vertical wave forces and the moments) on the bodies. It is found that the influences of the incident wave height on the higher-order harmonic components of different physical quantities are quite different. The effects of the incident wave height on the reflection, transmission and energy loss coefficients are also discussed. Finally, aiming at the quantitative estimation of the response time and the damping time of gap resonance, two different methods are proposed and verified for the first time on gap resonance.</p
On hydrodynamic characteristics of gap resonance between two fixed bodies in close proximity
The resonant water motion inside a narrow gap between two identical fixed boxes that are in side-by-side configuration is investigated using a two-dimensional (2D) numerical wave tank based on OpenFOAM®, an open source CFD package. Gap resonance is excited by regular waves with various wave heights, ranging from linear waves to strong nonlinear waves. This paper mainly focuses on the harmonic analyses of the free-surface elevation in the narrow gap and wave loads (including the horizontal wave forces, the vertical wave forces and the moments) on the bodies. It is found that the influences of the incident wave height on the higher-order harmonic components of different physical quantities are quite different. The effects of the incident wave height on the reflection, transmission and energy loss coefficients are also discussed. Finally, aiming at the quantitative estimation of the response time and the damping time of gap resonance, two different methods are proposed and verified for the first time on gap resonance.</p
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