可变量

Under quadratic loss function, the definition of conditional admissible prediction is given and some necessary and sufficient conditions for linear predictions Ly_s of conditional linear predictable variable Qy to be admissible are obtained.

在二次损失函数下，给出了条件可容许预测的定义，在齐次线性预测类和非齐次线性预测类中得到了条件线性可预测变量Qy的线性预测Ly_s是可容许预测的充要条件。

Halford et al. proposed a theory of relational complexity to interpret the essence of task difficulty. To be exact, the difficulty of task can be determined by the number of argument or dimension related, which is called the re?鄄lational complexity. The relational complexity is increased with the processing demand. We can adopt such mech?鄄anisms as conceptual chunking and segmentation to reduce the complexity.

哈尔福德等人提出了评估任务难度的关系复杂性理论，认为任务难度可由相关的变量数量即关系复杂性来确定；关系复杂性越大加工要求也越高，这时可采取概念组块和分解机制来减少复杂性；认知发展阶段可归因于随着年龄的增长能够加工的关系复杂性的增加。

It can be integrated into existing applications. It is designed for application developer. The system provides power modeling. Users can widely select decision variables, such as integer, real, Boolean, etc. Users can also select extensive set of predefined constraints, such as primitive constraints and function constraints, local constraints and global constraints.

"明月"系统是开放的C++类库，可嵌入到具体的应用中，可扩展，是面向开发人员设计的；系统具有强有力的建模功能，用户可以广泛选择决策变量，例如整型、实型、布尔型等；可扩展的预定义约束集合，其中包括基本约束和功能约束，局部约束和全局约束。

Since the separable element algorithm of the rational univariate representation for solving zerodimensional systems presented by Rouillier makes the size of the coefficients in this representation too long, an improved algorithm for finding separating elements is presented in this paper, which is implemented by confirmingthe separating element of the coordinates step by step.

针对零维多项式系统中Rouillier计算可分元的算法使其相应的有理单变量表示中整系数过长的问题，提出一种改进的可分元选取算法，新算法通过逐步确定坐标可分元得以实现。

The prediction by using repeated learning of system with four variables makes a remarkable result. In this case, the predictability can reach to 77.4% on average. Even expert makes prediction from more information, the hit ratio and direction hit of prediction by model is higher 15% than that by expert.

多变量预测循环测试结果表明：4变量组合的预测效果较好，可预测率平均水平可以达到77.4%，即使在人工预测信息占优的条件下，系统预测命中率要高于同期人工预测15%左右。

A Peer Analysis compares the variables of any company in the set to the median, the average, the quartiles and the deciles of a given set of companies.

同业分析可将一家公司的某个变量与一组公司该变量的中位数值、平均值、进行比较。

Out of the four canonical variates, the third and fourth have low explanatory capabilities, and can be dropped from consideration.

於此四组典型变量中，第三组与第四组典型变量之解释能力不足，可不予考虑。

The algorithms for the reachability tree of marking variables and for S-invariants are implemented in this package.

设计和实现了SHLPN辅助分析软件，它包括了SHLPN标记变量可达图和S-不变量算法的实现。

The system implemented forest fire model selection automatically and intelligently. BP artificial neural network model of forest fire model selection was build by treating forest fire environment data as inputting variable and treating appropriate forest fire model as outputting variable. At the same time, we studied the methods of acquiring and calculating data of inputting and outputting. The system implemented machine of model selection automatically based on dynamic data driven technology. We selected 72 items experimental data from historical forest fire records in Beijing to experiment and confirm the validity of model selection. It turned out that the reliability of model selection is more than 80 percent.

3基于BP人工神经网络方法设计了林火模型适宜性选择技术框架结构，通过神经网络形成林火模型选择知识，实现了林火模型的自动化和智能化选择；以火场环境因子为输入变量，以适宜火场环境模拟的林火蔓延模型作为输出变量，构建了林火模型选择神经网络模型；研究了输入、输出因子数据的获取与计算方式，实现了动态数据驱动的林火模型自动选择机制；以本京市为例，选择了有详细火场情况记录的72场林火作为实验样本，其中60条记录作为学习样本集，12条记录作为验证样本，对神经网络进行了学习和验证，实验结果表明，模型选择精度可达到80%以上。

Rather, they deal with variables that are measured along a continuous scale and are recorded to some predetermined degree of accuracy Temperature, for example, may be measured to the nearest tenth of a degree on the Celsius scale, voltage may be measured to the nearest hundredth of a volt, and pressure may be measured to the nearest "pound per square inch" value.

模拟计算机处理在连续标度上测量的变量并按预先规定的精度进行记录。例如：测量时，温度可精确到1/10摄氏度，电压可精确到1/100伏，压力可精确到&磅／平方英寸&。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。