Compare with those gradient ascent methods, the EM algorithm convergence monotonously without setting the parameter of step size.
基于这些优点，本文采用EM算法来优化EBF网络的均值及协方差矩阵参数，并给出了应用EM算法估计EBF网络参数的具体公式。
The Financial Budget of Enterprise (EBF) reflects enterprises budget of a certain prospective period which includes such value indications as financial situations, management achievements, cashing in and cashing out etc.
企业财务预算是反映企业未来一定预算期内预计财务状况、经营成果及现金收支等价值指标的各种预算的总称。
The rate of exclusive breast feeding (EBF), partial breast feeding (PBF), bottle feeding (BF) of infant under 4 month was 506%, 482% and 12%, respectively.
婴儿4个月内的纯母乳喂养率、混合喂养率、人工喂养率分别为506%、482%和12%；
Objective: To study the hemodynamic effect of EBF in anesthetized rats.
目的：研究EBF对麻醉大鼠血流动力学的影响。
Eigen-beamforming (EBF) technique and trellis coded modulation (TCM) concatenated with space time block code (STBC) are used to achieve code gain and diversity gain.
应用空时分组码特征波束成型技术和格形编码调制（TCM）来获得分集增益和编码增益。
Point measurements have been implemented with Electron Beam Fluorescence (EBF) using detection of X-ray radiation and Coherent anti-Stokes Raman Scattering (CARS).
点的测量采用X射线辐射和相干反-StokesRaman散射（CARS）探测的电子束荧光（EBF）实现。
EBF (E β Farnesene), the main component of the aphid alarm pheromone of many species of aphid, is very useful for aphid control.
[反]β法尼烯（EβFarnesene，简称EBF）是许多蚜虫报警信息素的主要成份，可用于控制蚜虫危害。
EBF rate of the stunted children was 573% that was significantly lower than the infants with normal length.
生长迟缓婴儿的纯母乳喂养率为57.7%，显著低于身长正常的儿童73.0%。
Four typical plant communities were selected along an elevation gradient of Wuyi mountains as our study sites i. e. Evergreen Broad-leaf Forest (EBF), Coniferous Forest (CF), Sub-alpine Dwarf Forest (SDF), Alpine Meadow (AM).
本实验选择武夷山不同海拔高度具有代表性的四种植物群落（常绿阔叶林、针叶林、亚高山矮林和高山草甸）作为研究地。
The results showed that the yield displacement of the example was fundamentally stable, and could satisfy the deformation requirement of seismic code under occasional and rare earthquake level. The K-EBF structure took on the ideal progressively plastic mechanism.
结果表明：算例结构的屈服位移是基本稳定的，在偶遇和罕遇地震作用下结构的层间侧移比满足我国现行抗震规范的要求，结构最终呈现理想的渐进式梁铰屈服机构。
According to the choices of the different branches and the optional activities of workflow, the workflow graph was transformed to Ebf, Ebs, Ewf and Ews graphs. Subsequently, the critical paths of the Ebf, Ebs, Ewf and Ews graphs were worked out respectively.
该方法根据工作流图中选择分支和可跨越活动的选取情况，将工作流图分别描述成Ebf图、Ebs图、Ewf图和Ews图，并求得各图中的Ebf，Ebs，Ewf和Ews关键路径；
Eccentric braced frame (EBF) is an ideal earthquake-resistant structure.
偏心支撑框架（EBF）是一种比较理想的的抗震结构。
Four typical plant communities were selected along an elevation gradient of Wuyi mountains as our study sites i.e. Evergreen Broad-leaf Forest (EBF), Coniferous Forest (CF), Sub-alpine Dwarf Forest (SDF), Alpine Meadow (AM).
本实验选择武夷山不同海拔高度具有代表性的四种植物群落（常绿阔叶林、针叶林、亚高山矮林和高山草甸）作为研究地。