This paper describes the concept, system structure of the Decision Support system (DSS) firstly, then introduces the database, model library, knowledge library and arithmetic library of the DSS.
本文首先对决策支持系统(dss)的概念、体系结构进行了简要的介绍，阐述了DSS的数据库系统、模型库系统、知识库系统以及方法库系统。
Library Support for nullable types, including conversion operators and arithmetic operators.
为可空类型提供类库支持，包括转换运算符和算术运算符。
Scilab provides simple matrix operations like multiplication, plus a library of high-level operations like complex multi-dimensional arithmetic and correlation.
Scilab提供了简单的矩阵运算（比如乘法），也提供了高级运算库（比如复数多维算法和相关）。
The new arithmetic constructed the best wavelet packet based on the wavelet library with the criterion of fusing energy cost function and contract the most valuable features of the signals.
新算法以融合能量代价函数为标准，在整个小波库中构造最优小波包基，从小波包基上提取信号最有价值的特征值。
The new arithmetic constructed the best wavelet packet based on the wavelet library with the criterion of fusing energy cost function and contract the most valuable features of the signals.
新算法以融合能量代价函数为标准，在整个小波库中构造最优小波包基，从小波包基上提取信号最有价值的特征值。
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