Pei Yuan Wu

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In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: Abstract This paper presents a fast algorithm for bidiagonalizing a Hankel matrix. An(More)
In this paper, we propose structured doubling algorithms for the computation of the weakly stabilizing Hermitian solutions of the continuous-and discrete-time algebraic Riccati equations, respectively. Assume that the partial multiplicities of purely imaginary and unimodular eigenvalues (if any) of the associated Hamiltonian and symplectic pencil,(More)
In this survey article, we give an expository account of the recent developments on the Poncelet property for numerical ranges of the compressions of the shift S(Á). It can be considered as an updated and more advanced edition of the recent expository article published in the American Mathematical Monthly by the second author on this topic. The new(More)
In this study a keystroke-based authentication system is implemented on a large-scale free-text keystroke data set, where cost effective kernel-based learning algorithms are designed to enable trade-off between computational cost and accuracy performance. The authentication process evaluates the user's typing behavior on a vocabulary of words, where the(More)
We explore the graph Laplacian eigenmap for the application of three-dimensional (3D) optical bioimaging. By using the density invariant graph Laplacian, each high-dimensional sampling (e.g. an image) could be represented by a low-dimensional description. These descriptions not only preserve key features of raw images but also estimate unobservable(More)