P
Peter A. W. Lewis
Researcher at IBM
Publications - 19
Citations - 2397
Peter A. W. Lewis is an academic researcher from IBM. The author has contributed to research in topics: Discrete-time Fourier transform & Discrete Fourier transform (general). The author has an hindex of 14, co-authored 19 publications receiving 2200 citations. Previous affiliations of Peter A. W. Lewis include Imperial College London & Birkbeck, University of London.
Papers
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The finite Fourier transform
TL;DR: In this paper, the finite Fourier transform of a finite sequence is defined and its elementary properties are developed, and the convolution and term-by-term product operations are defined and their equivalent operations in transform space.
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A Branching Poisson Process Model for the Analysis of Computer Failure Patterns
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Historical notes on the fast Fourier transform
TL;DR: The contributions of many investigators are described and placed in historical perspective in this paper on the fast Fourier transform algorithm.
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Remarks on the theory, computation and application of the spectral analysis of series of events
TL;DR: In this article, the spectrum of a continuous-time series of events (point stochastic process) is derived by smoothing the periodogram and the spectrum is then used to estimate the phase and amplitude of the intensity function.
Discrete time series generated by mixtures III: Autoregressive processes (DAR(p))
TL;DR: In this paper, a scheme for obtaining a stationary sequence of discrete random variables which has p-th order Markov dependence and a specified marginal distribution is presented, which is called DAR(p) process.