نتایج جستجو برای: الگوریتم lle
تعداد نتایج: 23503 فیلتر نتایج به سال:
Automatic head frontal-view identification is challenging due to appearance variations caused by pose changes, especially without any training samples. In this paper, we present an unsupervised algorithm for identifying frontal view among multiple facial images under various yaw poses (derived from the same person). Our approach is based on Locally Linear Embedding (LLE), with the assumption th...
Cancer classification is one major application of microarray data analysis. Due to the ultra high dimensionality nature of microarray data, data dimension reduction has drawn special attention for such type of data analysis. The currently available data dimension reduction methods are either supervised, where data need to be labeled, or computational complex. In this paper, we proposed to use a...
Linear discriminant analysis (LDA) is a simple but widely used algorithm in pattern recognition. However it has some shortcomings in that it is sensitive to outliers and limited to linearly separable cases. To solve this problem a new version of nonlinear discriminant algorithm is proposed. This new version, SC-LLE, uses LDA combined with LLE method to take into account non-linearly separable c...
A study was conducted to find the optimal approach for integrating semantic technology across the extensive data banks utilized by the Laboratory for Laser Energetics (LLE). In addition to the immense amount of information stored by LLE, there are multiple repositories of data, making it difficult to locate and process information critical to the operations of the laser facilities. Semantic tec...
We consider the nonlinear stability of spectrally stable periodic waves in Lugiato-Lefever equation (LLE), a damped Schrodinger with forcing that arises optics. So far, such solutions has only been established against co-periodic perturbations by exploiting existence spectral gap. In this paper, we which are localized, i.e., integrable on line. Such localized naturally yield absence gap, so mus...
a method based on the genetic algorithm (ga) was developed to study the phase behavior of multicomponent and multiphase systems. upon application of the ga to the thermodynamic models which are commonly used to study the vle, vlle and lle phase equilibria, the physically meaningful values for the binary interaction parameters (bip) of the models were obtained. using the method proposed in this ...
Accurate values of the thermal conductivity and specific heat of deuterium are necessary to make high quality cryogenic laser fusion targets. Due to the difficulty of measuring these values at cryogenic temperatures, the “3ω” method is used. This involves passing an oscillating current through a platinum wire embedded in deuterium and measuring the third-harmonic voltage that results from the t...
This paper considers the problem of effective feature extraction acoustic signals from oil and gas pipelines under different working conditions. A pipeline leakage detection method is proposed based on multi-feature entropy fusion local linear embedding (LLE). First, seven kinds commonly used which can reflect characteristics signal better are extracted through experiments, including permutatio...
Liquid-liquid equilibria for the (water + lactic acid + benzyl alcohol or p-xylene) ternary systems were investigated at atmospheric pressure and in the temperature range from 298.15-318.15 K. The studied systems exhibit two types of liquid-liquid equilibrium (LLE) behavior. The system consisting of benzyl alcohol displays type-1 LLE behavior, while a type-2 behavior is exhibited by th...
Abstract In this study, volatile compounds of various beans (black bean, mung and soybean) were analyzed on the basis particle sizes extraction temperatures by two methods, namely, distillation under reduced pressure–continuous liquid–liquid (DRP–LLE) hot water (HWE). The experimental results confirmed presence 10 components. five major hexanal, 2-methyl-1-butanol, 1-hexanol, 1-octen-3-ol benza...
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