1) selection of forecast factors
预报因子选择
2) selectivity factor
选择因子
1.
Some basic concepts are introduced in the first part, such as semijoin, selectivity factor, profit analysis, and distributed query processing.
依据笔者开发大型分布数据库的应用实践,首先介绍半连接、选择因子、收益分析等基础概念,其次介绍分布式查询处理过程,主要阐述以半连接为核心的SDD-1查询优化算法,最后以实例说明该算法的实现并比较实际收益情况。
4) gene pre-selection
基因预选择
5) Forecasting Factor
预报因子
1.
Firstly,screen for the forecasting factors by adopting stepwise regression analysis;and then,establish predictive equation by use of the forecasting factors with better effects.
利用开封1981-2000年3-5月的大风资料,依据冷空气路径,将大风分为东北型、西北型;选出预报因子,用逐步回归方法,对因子进行筛选,选出效果较好的预报因子建立方程。
6) predictor
[英][prɪ'dɪktə(r)] [美][prɪ'dɪktɚ]
预报因子
1.
At first,based on the weather characteristics of Meiyu period,in terms of the statistical and dynamic method,the predictors are searched in data of HLAFS(High resolution Limited Area Forecast System).
将人工神经网络方法试用于南京夏季短期降水分级预报,根据南京夏季梅雨期的天气特点,用统计和动力学方法从HLAFS(高分辨率有限区域预报系统)预报产品中寻找预报因子,然后用2种方法选取输入因子分别对人工神经网络进行训练,并利用抽取的5天雨量实况作降水分级预报检验。
2.
Based on the historical material of T106 model and observed data of stations, we obtain the predictor after handling the data, and build the MOS prediction equations about the temperature, wind, cloud and precipitation of 80 stations in Gansu Province.
运用T106数值模式的历史资料及气象站点的观测资料,经过处理后形成预报因子,采用MOS方法建立甘肃省80个站的极端温度、风、云量、有无降水等常规天气要素的预报方程。
3.
The feature parameters of solar active region are selected as predictor.
选择太阳活动区的特征参量作为预报因子,如果活动区未来48小时发生大于等于M级耀斑标识为正例样本,未发生耀斑为反例样本,由这些样本组成训练集代入SVM训练算法构造了耀斑预报模型。
补充资料:短期天气预报(见天气预报和天气图预报)
短期天气预报(见天气预报和天气图预报)
u。。,,,:‘,anq,yubao短期天气预报见关匀布绍升,二,二一一
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条