历史数据

This method is best for data without trend but with seasonality that increases or decreases over time.

g 这种方法最适合用于没有趋势性但是季节性不顺着时间增加而增加的历史数据。

A secondary road segment was illustrated as an example for simulation analysis.

目前事故多发路段的鉴别方法都是针对在用的道路，依赖于对交通事故历史数据的统计分析，尚不能预测设计中道路的潜在危险点[4-6]。

On this basis, according to historical data, apply ANN and differential simulation method to get the quantitatively correlative relations between each production and its own influence factors, and introduce the new methods of prediction for dynamic indexes with gas-field development (The combinatorial prediction method based on fuzzy comprehensive evaluation, the method of ANN to select optimally combinatorial prediction models and the ANN prediction method based on genetic algorithm).(2) Base on mathematical programming, combine with quantitative economics and techno-economics, introduce economical indexes to establish production"s distribution optimal model, production"s constitution optimal model and measured production"s constitution optimal model, including multi-objective models and five-years models. Upon this, the optimal project for all gas field and each gas-collected factory can be got. Also, introduce the time value of capitals to improve on these models.(3) Base on the optimal solution theory and algorithm theory for the nonlinear programming problem, introduce the SUMT algorithm and genetic algorithm to study how to solve the models, and on the basis of normal genetic algorithm, make use of auto-adaptively modulating method to improve on normal genetic algorithm; Base on algorithm"s convergence theory and calculation"s complexity theory to analyze seriatim SUMT algorithm"s convergence and genetic algorithms convergence, and compare performance with each other.

在此基础上，利用神经网络方法和微分模拟方法根据历史数据得到各分项产量与其影响因素之间的定量关联关系，并引入气田开发动态指标新的预测方法(基于模糊综合评判的组合预测方法、神经网络优选组合预测模型预测方法以及基于遗传优化的神经网络预测方法)；(2)以数学规划为基础，结合数量经济学和技术经济学，引入经济指标建立产量分配优化模型、产量构成优化模型、措施产量构成优化模型、气田开发多目标规划模型以及五年规划模型，进而获得全气田及各采气厂的最优方案，并引入资金时间价值对五年规划模型进行改进；(3)以非线性规划问题的最优解及算法理论为基础，引入SUMT算法以及遗传算法对模型的求解进行研究，并在原有的遗传算法基础上，引入自适应调整方法对遗传算法进行改进；以算法的收敛性理论和计算复杂性理论为基础，逐一分析SUMT算法以及遗传算法的收敛性，并比较三种算法的优劣性。

By historical standards, this is all small beer.

从历史数据来看，这只能算是小菜一碟。

This paper introduced rough sets data mining method to take potential diagnosis rule from the fault diagnosis decision-making table of steam turbine unit. These rules can offer effective fault diagnosis service for steam turbine unit.

将汽轮机组故障历史数据进行模糊化及离散化处理，构建故障诊断决策表，以决策表作为主要工具，即"知识库"，采用模糊粗糙集数据挖掘方法直接从决策表中提取出潜在的诊断规则，为汽轮机组提供有效的故障诊断。

Historical data show that compared to 2007, stock account the situation of the whole of this year there have been a significant drop.

历史数据显示，与2007年相比，股票帐户中，今年整体情况已有显着下降。

And I do a demonstration analysis based on history exchange data of stock market.

并在股票交易的历史数据基础上，进行了实证分析。

Download two years' history in corn, sugar, and copper.

下载玉米，白糖和铜2年的历史数据。

Thirdly, we discussed how to decide whether the process is in control and if not, what shall we do to remove the signals. In this part, there are two aspects: T~2 statistic with unknown parameters and T~2 statistic with known parameters.

在此基础上，对如何通过历史数据建立稳态进行研究，其中的主要内容分为已知参数的情况下的异常值判异，未知参数情况下的异常值判异。

Also, the theoretical curve in Operational Mode Two is compared with the empirical capacity curves obtained through airport historic data to verify the capacity model's effectiveness and accuracy.

根据首都机场在2003年春运期间的运行历史数据，获得了双跑道系统的实际运行容量曲线，并将其与模式二之下的理论容量曲线进行了对比，验证了所建立的容量模型的正确性与准确性。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。