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Answers

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1

positive semidefiniteness: a psd matrix substracted by another rank 1 psd matrix

0

solve non-convex quadratic constrained quadratic programming

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What does “Vertex Solution” mean?

1

minimization of a function when the feasible set is an unbounded cone

1

Projection and Positive matrices

1

Relating the angle between two vectors to max and min eigenvalues

3

How to solve a system of linear equations without storing the matrix?

6

What software one needs to solve a big linear system on a small computer?

1

Nonstandard Hessian approximations in Gauss-Newton

2

Levenberg-Marquadt near the minima for non-zero-residual problems

3

Cascading minimization problems

1

linear programming with OR restrictions

4

Characterising semi-definite positiveness on vectors with non-negative entries

1

Ease of calculation of norm

1

SDP Algorithms/ maximally complementary solutions

2

On Random Vectors and Eigenvectors of Symmetric Matrices

1

Efficient Algorithm For Projection Onto A Convex Set

1

Moore-Penrose bound question

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Convolutive noise removal

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My overdetermined linear system gives both bad and good estimates. Why ?

1

Multiple Linear Regression Estimation without full recalc

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A question about normalization in the Fourier transform

5

Nonlinearly constrained optimization (quadratic)

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Continuity of Lexicographic Minimum Solution of a parametrized LP problem

2

Solving for an operator by minimization

6

Explicit formula for Cholesky factorization in a special case

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Solving a particular nonlinear system of equalities

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Ways to convert a Positive Semi-Definite (PSD) matrix -> Positive Definite matrix

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Sherali-Adams relaxation

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sparsity of QR decomposition