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Results tagged with reference-request
Search options not deleted
user 6360
This tag is used if a reference is needed in a paper or textbook on a specific result.
8
votes
1
answer
247
views
Operator compression preserving lowest energy eigenspace.
I have a large ($10^6$ by $10^6$) sparse ($0.4$% nonzero) hermitian matrix $H$ arising from the discretization of an elliptic PDE. I would like to approximate $H$ with a smaller matrix $H'$ in such a …
- 817
4
votes
1
answer
228
views
Quantifying the amount of structure in a data set via random matrix theory
Given a data matrix, $M \in \mathbb{R}^{n \times p}$, I am interested in methods quantifying the amount of structure in present in $M$.
I've found a few approaches, but I would like to learn more abou …
- 817
4
votes
2
answers
347
views
Convolutive noise removal
I have the time domain signal
$$
u_o(t) = u(t)e^{-t/\tau}\eta(t) + \sigma(t)
$$
where $\tau$ is known, $\eta$ is non-Gaussian noise, and $\sigma$ is Gaussian noise. The distribution of $\eta(t)$ is kn …
- 817