3,990 research outputs found
Integration of multiple culture of globalization and brand communication —taking the design of the advertising appeals of automobile brands
2013-2014 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe
Layer-wise Learning of Kernel Dependence Networks
Due to recent debate over the biological plausibility of backpropagation
(BP), finding an alternative network optimization strategy has become an active
area of interest. We design a new type of kernel network, that is solved
greedily, to theoretically answer several questions of interest. First, if BP
is difficult to simulate in the brain, are there instead "trivial network
weights" (requiring minimum computation) that allow a greedily trained network
to classify any pattern. Perhaps a simple repetition of some basic rule can
yield a network equally powerful as ones trained by BP with Stochastic Gradient
Descent (SGD). Second, can a greedily trained network converge to a kernel?
What kernel will it converge to? Third, is this trivial solution optimal? How
is the optimal solution related to generalization? Lastly, can we theoretically
identify the network width and depth without a grid search? We prove that the
kernel embedding is the trivial solution that compels the greedy procedure to
converge to a kernel with Universal property. Yet, this trivial solution is not
even optimal. By obtaining the optimal solution spectrally, it provides insight
into the generalization of the network while informing us of the network width
and depth
Phonons of Metallic Vicinal Surfaces
We present an analysis of the vibrational dynamics of metal vicinal surfaces
using the embedded atom method to describe the interaction potential and both a
real space Green's function method and a slab method to calculate the phonons.
We report two main general characteristics : a global shift of the surface
vibrational density of states resulting from a softening of the force field.
The latter is a direct result of the reduction of coordination for the
different type of surface atoms; and an appearance of high frequency modes
above the bulk band, resulting from a stiffening of the force field near the
step atom. The latter is due to a rearrangement of the atomic positions during
the relaxation of the surface atoms yielding a large shortening of the nearest
neighbor distances near the step atoms.Comment: 6 figures, to appear in Sur. Sci. proceedings of VAS1
Maximizing surface-enhanced Raman scattering sensitivity of surfactant-free Ag-Fe₃O₄ nanocomposites through optimization of silver nanoparticle density and magnetic self-assembly
Author name used in this publication: Zhi Yong Bao2013-2014 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe
Coexistence of polarization-locked and polarization-rotating vector solitons in a fiber laser with SESAM
Author name used in this publication: H. Y. Tam2009-2010 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe
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