Zobrazeno 1 - 10
of 2 178
pro vyhledávání: '"Walden, A. T."'
Publikováno v:
Journal of Aviation / Aerospace Education & Research. 2024, Vol. 33 Issue 2, p293-316. 24p.
Autor:
Lutzeyer, J. F., Walden, A. T.
The extended Davis-Kahan theorem makes use of polynomial matrix transformations to produce bounds at least as tight as the standard Davis-Kahan theorem. The optimization problem of finding transformation parameters resulting in optimal bounds from th
Externí odkaz:
http://arxiv.org/abs/1908.03465
Autor:
Lutzeyer, J. F., Walden, A. T.
The Davis-Kahan theorem can be used to bound the distance of the spaces spanned by the first $r$ eigenvectors of any two symmetric matrices. We extend the Davis-Kahan theorem to apply to the comparison of the union of eigenspaces of any two symmetric
Externí odkaz:
http://arxiv.org/abs/1908.03462
Distinguishing the Job Market Across Aerospace and Aviation: A Natural Language Processing Approach.
Autor:
Walden, Austin T.1, Pritchard, Michael J.1
Publikováno v:
Collegiate Aviation Review International. 2023, Vol. 41 Issue 2, p103-118. 16p.
Autor:
Lutzeyer, J. F., Walden, A. T.
Typically, graph structures are represented by one of three different matrices: the adjacency matrix, the unnormalised and the normalised graph Laplacian matrices. The spectral (eigenvalue) properties of these different matrices are compared. For eac
Externí odkaz:
http://arxiv.org/abs/1712.03769
Autor:
Zhuang, L., Walden, A. T.
We consider two types of averaging of complex covariance matrices, a sample mean (average) and the sample Fr\'echet mean. We analyse the performance of these quantities as estimators for the true covariance matrix via `intrinsic' versions of bias and
Externí odkaz:
http://arxiv.org/abs/1711.10646
Publikováno v:
In Inorganica Chimica Acta 1 March 2022 532
Autor:
Chandna, Swati, Walden, Andrew T.
This paper proposes a frequency domain approach to test the hypothesis that a complex-valued vector time series is proper, i.e., for testing whether the vector time series is uncorrelated with its complex conjugate. If the hypothesis is rejected, fre
Externí odkaz:
http://arxiv.org/abs/1605.05910
Autor:
Wolstenholme, R. J., Walden, A. T.
In the context of the graph matching problem we propose a novel method for projecting a matrix $Q$, which may be a doubly stochastic matrix, to a permutation matrix $P.$ We observe that there is an intuitve mapping, depending on a given $Q,$ from the
Externí odkaz:
http://arxiv.org/abs/1604.04235
Autor:
Schneider-Luftman, D., Walden, A. T.
Partial coherence is an important quantity derived from spectral or precision matrices and is used in seismology, meteorology, oceanography, neuroscience and elsewhere. If the number of complex degrees of freedom only slightly exceeds the dimension o
Externí odkaz:
http://arxiv.org/abs/1511.07030