• Aucun résultat trouvé

Low rank matrix estimation

Constrained Low-rank Matrix Estimation: Phase Transitions, Approximate Message Passing and Applications

Constrained Low-rank Matrix Estimation: Phase Transitions, Approximate Message Passing and Applications

... for Low-Rank matrix estimation ( Low-RAMP): In section II we derive and detail the approximate message passing algorithm to estimate marginal probabilities of the probability measures ...

65

Adaptive filtering for estimation of a low-rank positive semidefinite matrix

Adaptive filtering for estimation of a low-rank positive semidefinite matrix

... for estimation of a low-rank positive semidefinite matrix ...for low-rank matrices find applications in high-dimensional distance learning problems for classification or ...

7

Low Rank Matrix Completion with Exponential Family Noise

Low Rank Matrix Completion with Exponential Family Noise

... Keywords: Low rank matrix estimation; matrix completion; exponential family model; nuclear norm ...the matrix completion problem one aims at recovering a matrix, based on ...

21

Mutual information for symmetric rank-one matrix estimation: A proof of the replica formula

Mutual information for symmetric rank-one matrix estimation: A proof of the replica formula

... beyond low-rank matrix ...on rank-one symmetric matrix estimation, our proof technique is readily extendable to more generic low-rank symmetric matrix or ...

14

Rank-one matrix estimation: analysis of algorithmic and information theoretic limits by the spatial coupling method

Rank-one matrix estimation: analysis of algorithmic and information theoretic limits by the spatial coupling method

... beyond low-rank matrix estimation and can be applied for a wide range of inference problems where message-passing algorithm and spatial coupling can be ...

51

Covariance estimation on matrix manifolds

Covariance estimation on matrix manifolds

... new low-rank parameterized covariance families, based on given problem-specific anchor covariance ...The rank of the anchor matrices is assumed to be equal to some value r, usually much smaller than ...

150

Budget-Optimal Crowdsourcing Using Low-Rank Matrix Approximations

Budget-Optimal Crowdsourcing Using Low-Rank Matrix Approximations

... As a taskmaster, the natural core optimization problem of our concern is how to achieve a certain reliability in our answers with minimum cost. Since we pay equal amount for all the task assignments, the cost is ...

9

On a fixed-point algorithm for structured low-rank approximation and estimation of half-life parameters

On a fixed-point algorithm for structured low-rank approximation and estimation of half-life parameters

... Terms— Low rank approximation, structured ma- trices, fixed-point ...given matrix F by a structured matrix ...is low rank and Positive Semi-Definite (PSD). While structured ...

6

Estimation of structured tensor models and recovery of low-rank tensors

Estimation of structured tensor models and recovery of low-rank tensors

... traditional matrix-based ones. The estimation of excitation/emission spectra from fluorescence data in chemometrics by means of high-order tensor decomposition techniques [ 25 , 24 ] is a stereotypical ...

239

Phase-constrained Parallel Magnetic Resonance Imaging Reconstruction Based on Low-rank Matrix Completion

Phase-constrained Parallel Magnetic Resonance Imaging Reconstruction Based on Low-rank Matrix Completion

... There are many benefits when combining the phase con- straint with parallel imaging in a comprehensive method for MRI. Less data acquisition and better reconstruction result are the most two significant advantages. In ...

15

PAC-Bayesian estimation of low-rank matrices

PAC-Bayesian estimation of low-rank matrices

... 70 CHAPTER 3. QUANTUM STATE TOMOGRAPHY independent systems identically prepared in the same state. The ’tomographic’ method, also named as linear/direct inversion [ Vogel and Risken , 1989 ; Reh´ ˇ aˇ cek et al. , 2010 ...

149

Probabilistic low-rank matrix completion on finite alphabets

Probabilistic low-rank matrix completion on finite alphabets

... Table 4: Binomial prediction error when performing one versus the others procedure on the Movie- Lens 100k dataset. 4 Conclusion and future work We have proposed a new nuclear norm penalized maximum log-likelihood ...

18

Constant Modulus Algorithms via Low-Rank Approximation

Constant Modulus Algorithms via Low-Rank Approximation

... as rank-1 matrix minimization problems, and then transforming them to convex optimization problems by replacing the rank-1 constraint by its convex surrogate - the minimization of the trace ...

12

Decomposition of Low Rank Multi-Symmetric Tensor

Decomposition of Low Rank Multi-Symmetric Tensor

... the matrix H τ associated to T in the bases A 1 and A 2 and we substitute x 0 by ...Hankel matrix associated to a chosen truncated bases of A 1 and A 2 such that the multiplication of the matrix by ...

13

Sparse Representations and Low-Rank Tensor Approximation

Sparse Representations and Low-Rank Tensor Approximation

... λ r E (r) ) (3) In particular, decomposable tensors have a rank equal to one. When minimal, decomposition (2) reveals the rank and is often called the Canonical Polyadic (CP) decomposition of T. Other ...

19

Decomposition of homogeneous polynomials with low rank

Decomposition of homogeneous polynomials with low rank

... 0 , . . . , x m ] 1 ) ' P(V ∗ ), the generic element belonging to σ s (X m,d ) is the projective class of a form (a symmetric tensor) of type (1). Unfortunately, for a given P ∈ P N , we only have the inequality sbr(P ) ...

9

On minimal decompositions of low rank symmetric tensors

On minimal decompositions of low rank symmetric tensors

... the rank of f ? Can we provide a minimal Waring decomposition? For general forms of fixed degree and fixed number of variables, the value of the rank is known due to the result of ...

27

Estimation of Covariance Matrix Distances in the High Dimension Low Sample Size Regime

Estimation of Covariance Matrix Distances in the High Dimension Low Sample Size Regime

... The objective is to depict the data in a two-dimensional pro- jection space in order to identify the two classes based on their covariance matrices. To this end, we use kernel PCA [5] for a Wasserstein distance metric, ...

6

A Proposition for Fixing the Dimensionality of a Laplacian Low-rank Approximation of any Binary Data-matrix

A Proposition for Fixing the Dimensionality of a Laplacian Low-rank Approximation of any Binary Data-matrix

... reference matrix seem to have been discovered independently several times, in various application domains: ecology, psychometrics, combinatorics, ...Boolean matrix can be con- verted into any other one with ...

5

Random matrix-improved estimation of covariance matrix distances

Random matrix-improved estimation of covariance matrix distances

... [15] Houdard, A., Bouveyron, C., Delon, J., 2017. High-dimensional mixture models for unsupervised image denoising (hdmi) . [16] Kammoun, A., Couillet, R., Najim, J., Debbah, M., 2012. Performance of mutual information ...

37

Show all 7025 documents...

Sujets connexes