...叶斯网络参数,实验表明该算法可有效降低参数学习的时间复杂性,进而将该算法应用到结构EM算法中,提出一种并行的结构EM算法(PL-SEM),PL-SEM算法并行地计算各个样本的期望充分因子和贝叶斯网络的参数,降低结构学习的时间复杂性.
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The structure, surface morphology and the optical properties were characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence (PL).
用X 射线衍射(XRD)、扫描电镜(SEM)、荧光光谱(PL)对样品进行结构、形貌和发光特性的分析。
X ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), and photoluminescence (PL) are used to analyze the synthesized GaN nanorods.
用X射线衍射(XRD)、扫描电镜(SEM)、高分辨率透射电镜(HRTEM)和光致发光光谱(PL)对生成的产物进行了分析。
The samples were characterized by X-ray diffraction (XRD), Scanning electronic microscope (SEM), photoluminescence (PL) and X-ray excited luminescence (XEL) spectra.
分别以X-射线衍射(XRD)、扫描电子显微镜(SEM)、光致发光(PL)光谱及X-射线激发的发光(XEL)光谱对样品进行了表征。
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