نتایج جستجو برای: ga kpls
تعداد نتایج: 35954 فیلتر نتایج به سال:
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In the present work, an artificial neural network (ANN) model was used to study the quantitative structure retention relationship (QSRR) of retention index (RI) of some volatile compounds in natural cocoa and conched chocolate powder. Molecular structural descriptors are selected using genetic algorithm to construct the nonlinear QSRR models, kernel partial least squares PLS (KPLS) and Levenber...
In this paper we propose a knowledge-based approach for solving data dependence testing and loop scheduling problems. A rule-based system, called the K-Test, is developed by repertory grid and attribute ording table to construct the knowledge base. The K-Test chooses an appropriate testing algorithm according to some features of the input program by using knowledge-based techniques, and then ap...
The complexity class of Πpk-polynomial local search (PLS) problems is introduced and is used to give new witnessing theorems for fragments of bounded arithmetic. For 1 ≤ i ≤ k + 1, the Σi -definable functions of T k+1 2 are characterized in terms of Π p k-PLS problems. These Π p kPLS problems can be defined in a weak base theory such as S 2 , and proved to be total in T k+1 2 . Furthermore, the...
در سال های اخیر خواص ساختاری و الکتریکی نانو لوله های متنوعی در علوم مهندسی و کاربردی و تئوریکی مورد بررسی قرار گرفته است. هدف از مطالعه این پروژه بررسی اثر جذب گاز هیدروژن سیانید بر روی (4و4) آرمیچر و (0و8) زیگزاگ خالص و جایگزین شده با گالیوم ، نیتروژن و گالیوم- نیتروژن بر روی نانو لوله بور فسفید است. کلیه محاسبات با استفاده از تئوری dft و در سطح b3lyp/6-31g و نرم افزار گوسین 9 انجام شده است. ...
In wind tunnels, the Mach number needs to be precisely monitored and controlled. It is difficult obtain directly online, especially when tunnel system operating in multiple modes. To deal with this problem, a prediction algorithm based on kernel partial least squares method proposed for multi-mode systems. First, order reflect real-time changes, time-slice regression adopted. Then, enable model...
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