Browsing by Title

Now showing items 2838-2857 of 4806

  • Nonlinear spectral image fusion 

    Benning, Martin; Möller, M; Nossek, RZ; Burger, M; Cremers, D; Gilboa, G; Schönlieb, CB (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2017-01-01)
    © Springer International Publishing AG 2017. In this paper we demonstrate that the framework of nonlinear spectral decompositions based on total variation (TV) regularization is very well suited for image fusion as well ...

  • Nonlinear tides in a homogeneous rotating planet or star: global modes and elliptical instability 

    Barker, Adrian John; Braviner, Harry J; Ogilvie, Gordon Ian (Oxford University PressMonthly Notices of the Royal Astronomical Society, 2016-03-28)
    We revisit the global modes and instabilities of homogeneous rotating ellipsoidal fluid masses, which are the simplest global models of rotationally and tidally deformed gaseous planets or stars. The tidal flow in a ...

  • Nonlinear tides in a homogeneous rotating planet or star: global simulations of the elliptical instability 

    Barker, Adrian John (Oxford University PressMonthly Notices of the Royal Astronomical Society, 2016)
    I present results from the first global hydrodynamical simulations of the elliptical instability in a tidally deformed gaseous planet (or star) with a free surface. The elliptical instability is potentially important for ...

  • A Nonparametric Approach to Pricing and Hedging Derivative Securities via Learning Networks 

    Unknown author (1994-04-01)
    We propose a nonparametric method for estimating derivative financial asset pricing formulae using learning networks. To demonstrate feasibility, we first simulate Black-Scholes option prices and show that learning ...

  • Nonparametric Belief Propagation and Facial Appearance Estimation 

    Unknown author (2002-12-01)
    In many applications of graphical models arising in computer vision, the hidden variables of interest are most naturally specified by continuous, non-Gaussian distributions. There exist inference algorithms for discrete ...

  • Nonparametric Sparsity and Regularization 

    Unknown author (2011-09-26)
    In this work we are interested in the problems of supervised learning and variable selection when the input-output dependence is described by a nonlinear function depending on a few variables. Our goal is to consider a ...

  • Nonresonant optical control of a spinor polariton condensate 

    Askitopoulos, A; Kalinin, K; Liew, TCH; Cilibrizzi, P; Hatzopoulos, Z; Savvidis, PG; Berloff, Natalia G; Lagoudakis, PG (American Physical SocietyPhysical Review B, 2016)
    We investigate the spin dynamics of polariton condensates spatially separated from and effectively confined by the pumping exciton reservoir. We obtain a strong correlation between the ellipticity of the non-resonant optical ...

  • Nonthermal fixed points in quantum field theory beyond the weak-coupling limit 

    Berges, J; Wallisch, Benjamin (American Physical SocietyPhysical Review D - Particles, Fields, Gravitation and Cosmology, 2017-02-22)
    Quantum systems in extreme conditions can exhibit universal behavior far from equilibrium associated to nonthermal fixed points with a wide range of topical applications from early-Universe inflaton dynamics and heavy-ion ...

  • A Note of Zipf's Law, Natural Languages, and Noncoding DNA Regions 

    Unknown author (1995-03-01)
    In Phys. Rev. Letters (73:2), Mantegna et al. conclude on the basis of Zipf rank frequency data that noncoding DNA sequence regions are more like natural languages than coding regions. We argue on the contrary that an ...

  • A Note on Object Class Representation and Categorical Perception 

    Unknown author (1999-12-17)
    We present a novel scheme ("Categorical Basis Functions", CBF) for object class representation in the brain and contrast it to the "Chorus of Prototypes" scheme recently proposed by Edelman. The power and flexibility ...

  • A Note on Perturbation Results for Learning Empirical Operators 

    Unknown author (2008-08-19)
    A large number of learning algorithms, for example, spectral clustering, kernel Principal Components Analysis and many manifold methods are based on estimating eigenvalues and eigenfunctions of operators defined by a ...

  • A Note on Support Vector Machines Degeneracy 

    Unknown author (1999-08-11)
    When training Support Vector Machines (SVMs) over non-separable data sets, one sets the threshold $b$ using any dual cost coefficient that is strictly between the bounds of $0$ and $C$. We show that there exist SVM ...

  • A Note on the Computation of Binocular Disparity in a Symbolic, Low-Level Visual Processor 

    Unknown author (1974-12-01)
    The goals of the computation that extracts disparity from pairs of pictures of a scene are defined, and the contraints imposed upon that computation by the three-dimensional structure of the world are determined. ...

  • A Note on the Generalization Performance of Kernel Classifiers with Margin 

    Unknown author (2000-05-01)
    We present distribution independent bounds on the generalization misclassification performance of a family of kernel classifiers with margin. Support Vector Machine classifiers (SVM) stem out of this class of machines. The ...

  • A Note on the Optimal Allocation of Spaces in MACLISP 

    Unknown author (MIT Artificial Intelligence Laboratory, 1977-03-16)
    This note describes a method for allocating storage among the various spaces in the MACLISP Implementation of LISP. The optimal strategy which minimizes garbage collector effort allocates free storage among the various ...

  • Notes on PCA, Regularization, Sparsity and Support Vector Machines 

    Unknown author (1998-05-01)
    We derive a new representation for a function as a linear combination of local correlation kernels at optimal sparse locations and discuss its relation to PCA, regularization, sparsity principles and Support Vector Machines. ...

  • Notes on Regularized Least Squares 

    Unknown author (2007-05-01)
    This is a collection of information about regularized least squares (RLS). The facts here are not new results , but we have not seen them usefully collected together before. A key goal of this work is to demonstrate that ...

  • Notes on the Shannon Entropy of the Neural Response 

    Unknown author (2009-10-09)
    In these notes we focus on the concept of Shannon entropy in an attempt to provide a systematic way of assessing the discrimination properties of the neural response, and quantifying the role played by the number of layers ...

  • Notes Relating to the Design of a High Quality Image Sensor 

    Unknown author (MIT Artificial Intelligence Laboratory, 1975-06)
    Some of the information that as used in arriving at a design for a high quality image input device is documented. The device uses a PIN photo-diode directly coupled to an FET-input op-amp as the sensor and two moving-iron ...

  • A Novel Approach to Graphics 

    Unknown author (1992-02-01)
    sWe show that we can optimally represent the set of 2D images producedsby the point features of a rigid 3D model as two lines in twoshigh-dimensional spaces. We then decribe a working recognition systemsin which we represent ...