查询词典 prior probability

Using assumed explained variable condition, applying the maximum entropy principle and with the condition probability distribution complying with that of sample data and prior distribution, the author finally estimates an optimal conditional probability density of the LGD.

利用假定的解释变量条件，应用最大熵原理，并要求所估计的条件概率分布一致于样本数据和先验分布，最终对违约损失率估计出最佳的条件概率密度。

This conditional probability quantifies the ability of the vehicle preparation process to identify and repair defects prior to customer delivery.

这个条件概率可以使整车准备过程中发现和修复产品缺陷的能力得到量化。

Provided that the initial prior intensity of the states is Gaussian or can be identified as a Gaus- sian sum, the analytical results of the algorithm show that the posterior intensity at any subsequent time step remains a Gaussian sum under the assumption that the state noise, the measurement noise, target spawn intensity, new target birth intensity, target survival prob- ability, and detection probability are all Gaussian sums.

分析的结果表明，当初始的先验强度满足高斯或者可以表示成高斯和的形式时，通过将状态噪声、观测噪声、目标的繁衍、新目标的产生、目标的存活概率和检测概率表示成高斯和的形式，之后每个时刻的后验强度均能表示成高斯和形式。

Therefore, it analyzes the theory of opportunism behavior, credit behavior and cost of transaction to conclude that opportunism behavior is determined by single game, the length of time of cooperation and prior probability of repeated game.

本文通过对机会主义行为、信用行为和交易成本的理论分析得出下述结论；机会主义行为是由一次性博弈、合作关系的时间长度、重复博弈发生的先验概率等因素所决定。

The prime character of Bayes method requires the prior probability as well as s ample information during dealing any statistical questions.

进行机电设备故障诊断的难点在于故障和征兆信息的随机性、模糊性和某些信息的不确定性。

The combined classifiers are obtained by training the sample set. Using the sample to centralize the ratio of different kinds of targets can reflect prior probability of various classifiers.

用于组合的各个分类器通常是基于样本集通过一定的训练得到，样本集中不同类目标的比率可以反映分类目标的先验概率。

If the prior probability of an occurrence is very high, a model would achieve a strong prediction rate if all observations were simply classified into this class.

如果一种类别的先验概率非常高，那么一个模型把所有的观测都分类为这个类比的话正确率很高。

It has no strict precondition of normal distribution of the input data and can increase the classification accuracy efficiently though adjusting the prior probability density dynamically.

贝叶斯网络是一种新的数据表达和推理模型，对数据没有严格的正态分布前提要求，通过动态地调整先验概率密度，能有效提高分类精度。

First, an extended rough set model based on valued tolerance relation and prior probability obtained out of incomplete information system is founded. Then, as a part of the model, the attribute reduction of incomplete information system and the corresponding discernibility matrix are proposed, and the attribute reduction is obtained by the normal form transform.

作者首先从扩展粗集理论适应范围的角度出发，引入信息系统对象的先验概率，结合量化相容关系的思想，提出基于先验概率的相容关系模型，然后以该模型为基础研究了不完备信息系统的属性约简，通过严格的数学证明，得到基于分辨矩阵的属性约简算法。

Firstly, a mathematic model was constructed to deal with fault isolation. This model mainly considered the associations among fault sources and available testing of hierarchical system, the affiliation of faults with replaceable units in different levels, the prior probability of fault sources and the available testing costs. Secondly, a quasi multi-step look-ahead search algorithm was presented which employed the information gain as its heuristics. This algorithm could realize optimization of testing sequence in different isolation levels.

首先基于层次系统故障与测试之间的关联关系，以及故障与不同层级可更换单元的隶属关系，结合故障的先验概率与可用测试成本，构造了层次系统故障隔离问题的数学描述模型；然后以信息增益为启发策略，提出了一种准多步前向搜索算法，实现了不同隔离级的测试顺序优化。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。