Topic

# CPU time

About: CPU time is a research topic. Over the lifetime, 6958 publications have been published within this topic receiving 118877 citations. The topic is also known as: process time.

##### Papers published on a yearly basis

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Kyoto University

^{1}TL;DR: A simplified scoring system is proposed that performs well for reducing CPU time and increasing the accuracy of alignments even for sequences having large insertions or extensions as well as distantly related sequences of similar length.

Abstract: A multiple sequence alignment program, MAFFT, has been developed. The CPU time is drastically reduced as compared with existing methods. MAFFT includes two novel techniques. (i) Homologous regions are rapidly identified by the fast Fourier transform (FFT), in which an amino acid sequence is converted to a sequence composed of volume and polarity values of each amino acid residue. (ii) We propose a simplified scoring system that performs well for reducing CPU time and increasing the accuracy of alignments even for sequences having large insertions or extensions as well as distantly related sequences of similar length. Two different heuristics, the progressive method (FFT-NS-2) and the iterative refinement method (FFT-NS-i), are implemented in MAFFT. The performances of FFT-NS-2 and FFT-NS-i were compared with other methods by computer simulations and benchmark tests; the CPU time of FFT-NS-2 is drastically reduced as compared with CLUSTALW with comparable accuracy. FFT-NS-i is over 100 times faster than T-COFFEE, when the number of input sequences exceeds 60, without sacrificing the accuracy.

12,003 citations

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IBM

^{1}TL;DR: In this article, a new general purpose algorithm for the solution of combinatorial optimization problems is presented, which is even simpler structured than the wellknown simulated annealing approach, and demonstrated by computational results concerning the traveling salesman problem and the problem of the construction of error-correcting codes.

1,152 citations

01 Jan 1999

TL;DR: A simple event-based PID controller is presented and it is shown that it is possible to obtain large reductions in CPU utilization with only minor control performance degradation.

Abstract: A simple event-based PID controller is presented. It is shown that it is possible to obtain large reductions in CPU utilization with only minor control performance degradation. Simulations on a double-tank process are presented.

865 citations

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Yale University

^{1}TL;DR: In this article, an algorithm for rapid solution of boundary value problems for the Helmholtz equation in two dimensions based on iteratively solving integral equations of scattering theory is described. But the algorithm is not suitable for large scale problems.

859 citations

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TL;DR: In this article, a simple event-based PID controller is presented, and it is shown that it is possible to obtain large reductions in CPU utilization with only minor control performance degradation.

796 citations