Matches in SemOpenAlex for { <https://semopenalex.org/work/W3100835144> ?p ?o ?g. }
Showing items 1 to 94 of
94
with 100 items per page.
- W3100835144 abstract "We propose a flexible yet interpretable model for high-dimensional data with time-varying second order statistics, motivated and applied to functional neuroimaging data. Motivated by the neuroscience literature, we factorize the covariances into sparse spatial and smooth temporal components. While this factorization results in both parsimony and domain interpretability, the resulting estimation problem is nonconvex. To this end, we design a two-stage optimization scheme with a carefully tailored spectral initialization, combined with iteratively refined alternating projected gradient descent. We prove a linear convergence rate up to a nontrivial statistical error for the proposed descent scheme and establish sample complexity guarantees for the estimator. We further quantify the statistical error for the multivariate Gaussian case. Empirical results using simulated and real brain imaging data illustrate that our approach outperforms existing baselines." @default.
- W3100835144 created "2020-11-23" @default.
- W3100835144 creator A5016868056 @default.
- W3100835144 creator A5076316802 @default.
- W3100835144 creator A5077952416 @default.
- W3100835144 date "2020-11-11" @default.
- W3100835144 modified "2023-10-16" @default.
- W3100835144 title "A Nonconvex Framework for Structured Dynamic Covariance Recovery." @default.
- W3100835144 cites W1560153690 @default.
- W3100835144 cites W2005752655 @default.
- W3100835144 cites W2024729467 @default.
- W3100835144 cites W2062125287 @default.
- W3100835144 cites W2088911135 @default.
- W3100835144 cites W2112447569 @default.
- W3100835144 cites W2139576349 @default.
- W3100835144 cites W2798387965 @default.
- W3100835144 cites W2963099043 @default.
- W3100835144 cites W2963773084 @default.
- W3100835144 cites W2964089577 @default.
- W3100835144 cites W2965497096 @default.
- W3100835144 cites W3141595720 @default.
- W3100835144 hasPublicationYear "2020" @default.
- W3100835144 type Work @default.
- W3100835144 sameAs 3100835144 @default.
- W3100835144 citedByCount "0" @default.
- W3100835144 crossrefType "posted-content" @default.
- W3100835144 hasAuthorship W3100835144A5016868056 @default.
- W3100835144 hasAuthorship W3100835144A5076316802 @default.
- W3100835144 hasAuthorship W3100835144A5077952416 @default.
- W3100835144 hasConcept C105795698 @default.
- W3100835144 hasConcept C11413529 @default.
- W3100835144 hasConcept C114466953 @default.
- W3100835144 hasConcept C121332964 @default.
- W3100835144 hasConcept C126255220 @default.
- W3100835144 hasConcept C127162648 @default.
- W3100835144 hasConcept C153258448 @default.
- W3100835144 hasConcept C154945302 @default.
- W3100835144 hasConcept C163716315 @default.
- W3100835144 hasConcept C178650346 @default.
- W3100835144 hasConcept C185429906 @default.
- W3100835144 hasConcept C199360897 @default.
- W3100835144 hasConcept C2781067378 @default.
- W3100835144 hasConcept C31258907 @default.
- W3100835144 hasConcept C33923547 @default.
- W3100835144 hasConcept C41008148 @default.
- W3100835144 hasConcept C50644808 @default.
- W3100835144 hasConcept C57869625 @default.
- W3100835144 hasConcept C62520636 @default.
- W3100835144 hasConceptScore W3100835144C105795698 @default.
- W3100835144 hasConceptScore W3100835144C11413529 @default.
- W3100835144 hasConceptScore W3100835144C114466953 @default.
- W3100835144 hasConceptScore W3100835144C121332964 @default.
- W3100835144 hasConceptScore W3100835144C126255220 @default.
- W3100835144 hasConceptScore W3100835144C127162648 @default.
- W3100835144 hasConceptScore W3100835144C153258448 @default.
- W3100835144 hasConceptScore W3100835144C154945302 @default.
- W3100835144 hasConceptScore W3100835144C163716315 @default.
- W3100835144 hasConceptScore W3100835144C178650346 @default.
- W3100835144 hasConceptScore W3100835144C185429906 @default.
- W3100835144 hasConceptScore W3100835144C199360897 @default.
- W3100835144 hasConceptScore W3100835144C2781067378 @default.
- W3100835144 hasConceptScore W3100835144C31258907 @default.
- W3100835144 hasConceptScore W3100835144C33923547 @default.
- W3100835144 hasConceptScore W3100835144C41008148 @default.
- W3100835144 hasConceptScore W3100835144C50644808 @default.
- W3100835144 hasConceptScore W3100835144C57869625 @default.
- W3100835144 hasConceptScore W3100835144C62520636 @default.
- W3100835144 hasLocation W31008351441 @default.
- W3100835144 hasOpenAccess W3100835144 @default.
- W3100835144 hasPrimaryLocation W31008351441 @default.
- W3100835144 hasRelatedWork W1863645314 @default.
- W3100835144 hasRelatedWork W2101522492 @default.
- W3100835144 hasRelatedWork W2185602187 @default.
- W3100835144 hasRelatedWork W2614599440 @default.
- W3100835144 hasRelatedWork W2626367313 @default.
- W3100835144 hasRelatedWork W2792517146 @default.
- W3100835144 hasRelatedWork W2901707775 @default.
- W3100835144 hasRelatedWork W2913466177 @default.
- W3100835144 hasRelatedWork W2952093547 @default.
- W3100835144 hasRelatedWork W2953317318 @default.
- W3100835144 hasRelatedWork W2963224859 @default.
- W3100835144 hasRelatedWork W2968096253 @default.
- W3100835144 hasRelatedWork W2972993921 @default.
- W3100835144 hasRelatedWork W2980288697 @default.
- W3100835144 hasRelatedWork W3035314628 @default.
- W3100835144 hasRelatedWork W3081237658 @default.
- W3100835144 hasRelatedWork W3121191917 @default.
- W3100835144 hasRelatedWork W3145349353 @default.
- W3100835144 hasRelatedWork W3161766983 @default.
- W3100835144 hasRelatedWork W3214414906 @default.
- W3100835144 isParatext "false" @default.
- W3100835144 isRetracted "false" @default.
- W3100835144 magId "3100835144" @default.
- W3100835144 workType "article" @default.