163 citations · 1.5k across the 45 of their papers we have counts for
7 papers · 1 filter
Bootstrap Bartlett correction in inflated beta regression
Laís H. Loose, Fábio M. Bayer, Tarciana L. Pereira
The inflated beta regression model aims to enable the modeling of responses in the intervals , or . In this model, hypothesis testing is often performed based…
Multi-beam 4 GHz Microwave Apertures Using Current-Mode DFT Approximation on 65 nm CMOS
V. Ariyarathna, S. Kulasekera, A. Madanayake +4
A current-mode CMOS design is proposed for realizing receive mode multi-beams in the analog domain using a novel DFT approximation. High-bandwidth CMOS RF transistors are employed…
A Class of DCT Approximations Based on the Feig-Winograd Algorithm
C. J. Tablada, F. M. Bayer, R. J. Cintra
A new class of matrices based on a parametrization of the Feig-Winograd factorization of 8-point DCT is proposed. Such parametrization induces a matrix subspace, which unifies a nu…
Bartlett corrections in beta regression models
Fábio M. Bayer, Francisco Cribari-Neto
We consider the issue of performing accurate small-sample testing inference in beta regression models, which are useful for modeling continuous variates that assume values in $(0,1…
A Discrete Tchebichef Transform Approximation for Image and Video Coding
P. A. M. Oliveira, R. J. Cintra, F. M. Bayer +2
In this paper, we introduce a low-complexity approximation for the discrete Tchebichef transform (DTT). The proposed forward and inverse transforms are multiplication-free and requ…
Improved 8-point Approximate DCT for Image and Video Compression Requiring Only 14 Additions
U. S. Potluri, A. Madanayake, R. J. Cintra +3
Video processing systems such as HEVC requiring low energy consumption needed for the multimedia market has lead to extensive development in fast algorithms for the efficient appro…
Multi-Beam RF Aperture Using Multiplierless FFT Approximation
D. Suarez, R. J. Cintra, F. M. Bayer +3
Multiple independent radio frequency (RF) beams find applications in communications, radio astronomy, radar, and microwave imaging. An -point FFT applied spatially across an arr…