In this paper the concept of ability order of learning machine is introduced and a model of second order learning machine is given.

本文引入学习机的功能阶数的概念，给出二阶学习机的一种工作模型。

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A new second order recursive learning algorithm to multilayer feedforward network is proposed.

提出了多层前向神经网络的新型二阶递推学习算法。

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In this paper, a kind of variable metric fast second order nonlinear optimization algorithm is proposed, where a second order interpolating method is used in the optimization of learning rate.

神经网络的辨识采用变尺度二阶快速学习算法，利用二阶插值法来优化搜索学习速率。

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The second-generation Nest Learning Thermostat is available now for pre-order directly through the Nest Labs website and will ship later this month.

FORBES: World's Smartest Thermostat Is Now Even Smarter