In the J2EE Model 2 architecture, a servlet is the UI controller, responsible for getting input data, calling some back-end business logic, and then deciding what JSP to forward to.

在J2EE Model 2体系结构中，Servlet是UI控制器，负责获取输入数据，调用某些后端的业务逻辑，然后决定转发到哪一个JSP。

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In this model, back propagation algorithm based on forward networks was conducted to learn information of historical data and to train the network weights.

以人工神经网络的前馈型网络为基础结构，基于反向传播算法进行学习和训练来拟和证券价格指数的运动趋势。

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Combining grey system theory with the feature of series data, a grey interpolation approach based on forward and back grey prediction model is proposed.

根据灰色系统理论和序列数据的特性，提出一种灰插值方法。

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His comments came on the day the Scottish Conservatives put forward proposals to follow an Australian model where students pay back deferred fees and living costs.

BBC: Glasgow University principal says consider graduate tax