Senior citizens' quality of life is closely related to chronic diseases, body function, family support, and economic conditions.

慢性病、躯体功能、家庭支持、环境条件及经济状况等与老年人的生命质量密切相关。

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Second the properties which a cost function should have in order to construct a robust support vector regression are discussed. Then a family of cost functions is introduced.

然后讨论了构建稳健支撑向量机的代价函数所需的性质，并在此基础上，引入了损失代价函数族；

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