... DS-CDMA Systems with Multipath Channels Joachim Dahl, Jakob Stoustrup, Bernard H. Fleury, Sør... more ... DS-CDMA Systems with Multipath Channels Joachim Dahl, Jakob Stoustrup, Bernard H. Fleury, Søren Holdt Jensen Abstract We investigate precoding of the information symbols before spreading for downlink DS-CDMA systems subject to multipath fading. ...
This paper describes new algorithms and related software for total variation (TV) image reconstru... more This paper describes new algorithms and related software for total variation (TV) image reconstruction, more specifically: denoising, inpainting, and deblurring. The algorithms are based on one of Nesterov's first-order methods, tailored to the image processing applications in such a way that, except for the mandatory regularization parameter, the user needs not specify any parameters in the algorithms. The software is written in C with interface to Matlab (version 7.5 or later), and we demonstrate its performance and use with examples.
Http Dx Doi Org 10 1080 10556788 2012 684353, May 16, 2013
ABSTRACT Algorithms are presented for evaluating gradients and Hessians of logarithmic barrier fu... more ABSTRACT Algorithms are presented for evaluating gradients and Hessians of logarithmic barrier functions for two types of convex cones: the cone of positive semidefinite matrices with a given sparsity pattern, and its dual cone, the cone of sparse matrices with the same pattern that have a positive semidefinite completion. Efficient large-scale algorithms for evaluating these barriers and their derivatives are important in interior-point methods for nonsymmetric conic formulations of sparse semidefinite programs. The algorithms are based on the multifrontal method for sparse Cholesky factorization.
UMI, ProQuest ® Dissertations & Theses. The world's most comprehensive collection of dis... more UMI, ProQuest ® Dissertations & Theses. The world's most comprehensive collection of dissertations and theses. Learn more... ProQuest, Maximum likelihood estimation of multivariate normal parameters in the presence of left-censored and missing values. ...
... DS-CDMA Systems with Multipath Channels Joachim Dahl, Jakob Stoustrup, Bernard H. Fleury, Sør... more ... DS-CDMA Systems with Multipath Channels Joachim Dahl, Jakob Stoustrup, Bernard H. Fleury, Søren Holdt Jensen Abstract We investigate precoding of the information symbols before spreading for downlink DS-CDMA systems subject to multipath fading. ...
This paper describes new algorithms and related software for total variation (TV) image reconstru... more This paper describes new algorithms and related software for total variation (TV) image reconstruction, more specifically: denoising, inpainting, and deblurring. The algorithms are based on one of Nesterov's first-order methods, tailored to the image processing applications in such a way that, except for the mandatory regularization parameter, the user needs not specify any parameters in the algorithms. The software is written in C with interface to Matlab (version 7.5 or later), and we demonstrate its performance and use with examples.
Http Dx Doi Org 10 1080 10556788 2012 684353, May 16, 2013
ABSTRACT Algorithms are presented for evaluating gradients and Hessians of logarithmic barrier fu... more ABSTRACT Algorithms are presented for evaluating gradients and Hessians of logarithmic barrier functions for two types of convex cones: the cone of positive semidefinite matrices with a given sparsity pattern, and its dual cone, the cone of sparse matrices with the same pattern that have a positive semidefinite completion. Efficient large-scale algorithms for evaluating these barriers and their derivatives are important in interior-point methods for nonsymmetric conic formulations of sparse semidefinite programs. The algorithms are based on the multifrontal method for sparse Cholesky factorization.
UMI, ProQuest ® Dissertations & Theses. The world's most comprehensive collection of dis... more UMI, ProQuest ® Dissertations & Theses. The world's most comprehensive collection of dissertations and theses. Learn more... ProQuest, Maximum likelihood estimation of multivariate normal parameters in the presence of left-censored and missing values. ...
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