贝叶斯

A sub-level of spam filtering system model based on the traditional black and white list filtering technology is established.

在传统的黑白名单过滤技术的基础上，引入了IP信誉评分机制，并结合基于规则的过滤技术和基于内容的贝叶斯过滤技术，从而建立了一个多层次的垃圾邮件过滤系统模型。

The principle of the Bayesian estimation was used for forecasting the cotton phytophhtora boll rot epidemics in Shanghai.

本文描述了贝叶斯估计理论的基本原理及其在植物病害流行预测中的应用。

Bayesian estimation ; Cotton phytophthora boll rot ; Epidemics ; Forecast

贝叶斯估计；棉铃疫病；流行；预测

Then how to use limited Markov chain and Bayes' rule in DHCM to dynamically describe the evolution of enterprises' cooperative relationships, specifically evolution of cooperative relationships building and cooperative relationships selecting is analyzed. Finally, how to optimize related action sets in the model during the evolution is discussed.

模型首先对企业整体协作关系进行了一般性描述和形式化描述，之后利用有限马尔可夫链和贝叶斯法则对在面临新的市场需求的情况下企业之间是否建立协作关系以及建立何种协作关系进行了动态描述，并分析了在新的市场需求下，企业实体将如何选择最优的行动集。

A novel SAR despeckling method using Bayesian shrinkage in local wavelet coefficient domain is presented.

提出了一种抑制SAR图像斑点噪声的小波域贝叶斯软阈值方法。

At first, the protections and circuit breakers are taken as conditional attributes and faulty region as decision-making attribute, various faults are investigated and decision table is established; then by use of attribute reducing method based on cognizable matrix and information entropy the optimal attribute reduction combination is extracted; finally, by means of the reduction decision table formed by optimal attribute reduction combination, the naive Bayesian networks model is built and the nodal probability is trained.

首先以保护、断路器作为条件属性，故障区域作为决策属性，考察各种故障情况并建立决策表，然后利用基于可辨识矩阵和信息熵的属性约简方法提取最佳属性约简组合，最后以最佳属性约简组合形成的约简决策表建立朴素贝叶斯网络模型，并对节点概率进行训练。

Its application to numeral recognition shows that the improved Bayes principle made the combination of multiple classifiers achieve good performance of high recognition rate and high reliability.

在数字识别中的应用结果表明，改进的贝叶斯规则可以使多分类器的组合结果识别率和置信度得到明显提高。

Based on finite mixture models, we apply Bayesian method to compositional data and ordinal data clustering.

本文将基于有限混合模型的贝叶斯聚类方法推广应用到成分数据和有序数据的聚类分析。

Though studying some concepts and formulas in theory of probability,we give the definition of conditional independent between two random events and the formula probability in complete events set,and a simplified formula for density s function in n random variables is given.

通过对概率论中有关公式的研究，给出了条件独立的定义、推广了全概率公式和贝叶斯公式，并给出了n维随机变量函数的密度函数的简化计算公式。

The SV model based on a conditional normal distribution and a heavytailed distribution, especially Student's tdistribution are compared and analyzed in this paper.

为了估计SV模型的参数，我们使用了BUGS软件，该软件借助Gibbs取样方法对模型进行贝叶斯分析。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。