David Pfau

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166 reputation

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PhD student in theoretical neuroscience and machine learning at Columbia

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14 Questions

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3	Space of solutions to $f(x+y) = f(x) + f(y)$ when $f$ is convex
3	How to quantify the distance between matrices with an irrelevant rotation factor?
3	Prove that there are no convex functions on compact manifolds
3	Inverse of a diagonal matrix plus a Kronecker product?
3	Fit a quadratic form given covariant derivatives on the sphere?

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166 Reputation

+10	How to tell if a directed graph is acyclic from the adjacency matrix
+15	Space of solutions to $f(x+y) = f(x) + f(y)$ when $f$ is convex
+5	Prove that there are no convex functions on compact manifolds
+5	Singular values of a diagonal matrix concatenated with a vector?

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4 Answers

votes activity newest

2	HMM as special case of MRF
0	What is the extension of Bayesian Network into cyclic graph?
0	Solve a quadratic matrix equation?
0	Fit a quadratic form given covariant derivatives on the sphere?

23 Tags

2 markov-chains	0 matrices × 3
2 markov-process	0 convex-optimization × 2
0 linear-algebra × 9	0 roots × 2
0 differential-geometry × 5	0 bayesian
0 convex-analysis × 3	0 manifolds

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3 Accounts

$Mathematics Stack Exchange$	Mathematics	166 rep	8
	Stack Overflow	33 rep	5
	Physics	1 rep	1

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