Proposed in this paper is a method of model selection based on kernel alignment for support vector machines-OMSA (optimal model selection algorithm) by means of learning on kernel matrix.
通过对核矩阵的研究,利用核矩阵的对称正定性,采用核校准的方法提出了一种SVM最优模型选择的算法———OMSA算法。
0 based on support vector regression is put forward, the method can select kernel function using kernel alignment, can select keen correlative features repeatedly and update model dynamically.
0,该方法利用核校准进行核心函数的选择,具有动态更新模型的特点。
Aimed at the status that there is no uniform standard for calibration of water distribution network model,the calibration standards for hydraulic model of water distribution network at home and abroad are reviewed,and the calibration precision indexes and the recommendation values of water quality models including residual chlorine decay model and THM formation model are presented.
针对供水管网模型校核缺少统一技术标准的现状,综述了国内外管网水力模型的校核标准,提出了管网水质模型(包括余氯模型和THM模型)的校核精度指标和建议值。
For the need of the development of the Qinhuangdao Port, based on the observed tidal data of many years at the port, the design water level and the check water level are calculated in this paper.
鉴于秦皇岛港工程开发的需要,本大根据该港多年实测潮汐资料,推算了该港的设计水位和校核水位。
According to "Standard for Classification and Flood Control of Water Resources and Hydroelectric Projects"(SL252-2000) and "Classification & Design Safety Standard of Hydropower Projects"(DL5180-2003), the standard of Spillway Design Flood for first chop large scale earth and rockfill dam must be Probable Maximum Flood, or recurrence interval of ten thousand years.
根据《水利水电工程等级划分及洪水标准》SL252—2000和《水电枢纽工程等级划分及设计安全标准》DL5180—2003中的规定，对于一级大型土石坝，应以可能最大洪水(PMF)或重现期10000年作为校核洪水标准。