The use of the digital signal processing procedure of decimation is introduced as a tool to detect patterns of information entropy distribution and is applied to information entropy in influenza A segment 7. Decimation was able to reveal patterns of entropy accumulation in archival and emerging segment 7 sequences that were not apparent in the complete, undecimated data. The low entropy accumul...

We point out a general problem with the procedures commonly used to obtain improved actions from MCRG decimated configurations. Straightforward measurement of the couplings from the decimated configurations, by one of the known methods, can result into actions that do not correctly reproduce the physics on the undecimated lattice. This is because the decimated configurations are generally not r...

Interpolated second-order polynomials (ISOP’s) are proposed to design efficient cascaded integrator-comb (CIC)based decimation filters for a programmable downconverter. It is shown that some simple ISOP’s can effectively reduce the passband droop caused by CIC filtering with little degradation in aliasing attenuation. In addition, ISOP’s are shown to be useful for simplifying halfband filters t...

This paper is concerned with design of cascading CIC filter and FIR filter to improve the passband droop and stopband attenuation for decimation filter. Decimation filter has wide application in both analog and digital systems for data rate conversion as well as filtering. We have three class of filters FIR, IIR and CIC filters. IIR filters are simpler in structure, but not satisfy linear phase...

We introduce an algorithm for fast topology-sensitive decimation of volume meshes. The algorithm employs a planar quadric error metric to guarantee minimum geometric error at every simplification step, while maintaining the input mesh's geometric consistency, and restraining changes to its topological genus, at low computational costs. The proposed method presents a new alternative to existing ...

We submit the hyperclimbing hypothesis—an explanation for adaptation in genetic algorithms with uniform crossover (UGAs). Hyperclimbing is a stochastic search heuristic that works by decimating a search space, i.e. by iteratively fixing the values of small numbers of search space attributes. Global decimation is known to be an effective way to approach large instances of hard constraint satisfa...

Multi-parameter full waveform inversion (FWI) su ers from the complex nonlinearity in the objective function, compounded by the eventual tradeo between the model parameters. A hierarchical approach based on frequency and arrival time data decimation to maneuver the complex nonlinearity associated with this problem usually falls short in anisotropic media. In place of data decimation, I use a mo...

We present a new terrain decimation technique called a Quadtree Morph, or Q-morph. The new approach eliminates the usual popping artifacts associated with polygon reduction, replacing them with less objectionable smooth morphing. We show that Q-morphing is fast enough to create a view-dependent terrain model for each frame in an interactive environment. In contrast to most Geomorph algorithms, ...

In this paper we examine the relation between signal-tonoise-ratio, oversampling ratio, transition bandwidth, and filter order for some commonly used sigma-delta-modulators and corresponding decimation filters. The decimation filters are equi-ripple finite impulse response filters and it is demonstrated that, for any given filter order, there exists an optimum choice of the stopband ripple and ...