查询词典 multivariate

In this dissertation, copula theory and its applications in multivariate financial time series analysis are studied intensively.

本文主要研究Copula理论及其在多变量金融时间序列分析上的应用。

As a result of those researches, several multivariate financial time series models based on copula theory are proposed.

论文的主要工作和创新点如下：应用一套科学合理的流程来解决描述板块相关性结构的问题。

As the foundation of algebra, this course also offers indispensable preparation for subsequent core curriculum and sample curriculum such as differential equations, numerical calculation, functional analysis, probability theory and multivariate analysis, etc.

它不仅是代数学的基础，而且为微分方程，数值计算，泛函分析，概率论，多元分析等后继的基础课及选修课程提供了必要的

A multivariate model was then used to identify peri-OLT variables independently correlated with post-OLT length-of-stay.

此后，我们又运用多变量模型来鉴别围手术期变量与术后住院时间之间的独立关系。

And report according to Taiwan media, covalence of man size betrothal gift is worth 120 thousand multivariate (Monetary Unit is a RMB, similarly hereinafter), but the bride did not close however, took only indicative affianced red bag.

而据台湾媒体报道，男方大小聘礼共价值12万多元(货币单位为人民币，下同)，但是新娘却没有收下，只取了象征订婚的红包。

The paper focuses on the multivariate Laplacian distribution. Based on MLD, we have obtained the variance of the quadric form, the covariance of two quadric forms and the covariance of the linear function and the quadric form.

对于多元拉普拉斯分布，我们推导出了多元拉普拉斯分布的二次型的方差，两个二次型的协方差，线性函数与二次型的协方差。

At last, extends realized volatility based on high-frequency data to realized covariance matrix based on multivariate high-frequency data.

接着，实证研究了上海股市的"已实现"波动和调整"已实现"波动的特性，并针对调整"已实现"波动的长记忆性和"杠杠"效应建立了 ARFIMAX 模型。

Research and Application of Multivariate Genetic Analysis in the Field of Crop ...

着重阐明了它在作物遗传育种领域中的地位和作用，并对存在的问题作了讨论。

The anthocyanin HPLC fingerprint of wines from the grape varieties, the fingerprint of anthocyanin HPLC and volatility component GC-MS of the wine vintages, the fingerprint of the infrared spectrum and multivariate parameter of the wine production regions were established in this dissertation. wine Fingerprints were analyzed by using identification pattern methods, and the internal regular rule and crytic character of wine fingerprint were explained,identification pattern and methodology system of the main aspects of wine quality were established in this dissertation.

本文建立了不同酿造品种葡萄酒HPLC花青素指纹图谱、不同酒龄葡萄酒HPLC花青素指纹图谱和GC–MS挥发性成分指纹图谱、不同产地葡萄酒红外光谱指纹图谱和多元参数指纹图谱，应用相似度分析、主成分分析和聚类分析识别方法，对本文所建立的指纹图谱进行了分析，揭示了指纹图谱的内部规律和隐含性质，建立了适合的识别模式及葡萄酒质量指纹图谱检测体系。

In order to solve these problems encountered in the application of Artificial Intelligence in fault diagnosis of power transformer, some improved methods are presented, the main research work of this dissertation consists of the following parts: The conception of cumulative frequency in data reliability analysis is utilized to unify the results of Dissolved Gas Analysis. And with the application of the class-attribute function, the evaluation of typicality of samples and the selection of characteristic vectors of fault could be realized by integrating the technique of multivariate statistical analysis.

针对目前应用人工智能技术进行变压器绝缘故障诊断时所遇到的主要困难，本文进行了深入的研究与分析，进而提出了相应的解决方法，主要的研究工作如下：提出利用可靠性数据分析中累积频率的概念对油中溶解气体分析数据进行归一化处理；并在引入"类属函数"的概念后，结合多元统计分析技术实现了样本的典型性评价与故障特征矢量的选取。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。