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arXiv 2103.00147cs.LG
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确定课程评分函数的统计方法

Statistical Measures For Defining Curriculum Scoring Function

Indian Institute of Technology Gandhinagar(印度理工学院甘地纳加尔分校)

Vinu Sankar Sadasivan, Anirban Dasgupta

摘要:

课程学习是一种训练策略,它根据训练样本的难度对它们进行排序,并逐渐将它们暴露给学习者以提高网络性能。出于我们的见解,从内隐课程排序,我们首先介绍了一个简单的课程学习策略,使用统计措施,如标准差和熵值评分的难度数据点的真实图像分类任务。我们在多个真实图像数据集上用卷积和全连接神经网络实证地展示了其性能的改进。我们还提出并研究了一个动态的课程学习算法的性能。我们的动态课程算法试图在任何训练步骤中减少网络权重与最佳权重之间的距离,方法是对具有指向最佳权重的梯度的示例进行greenhouse采样。此外,我们使用我们的算法来讨论为什么课程学习是有帮助的。

英文摘要:

Curriculum learning is a training strategy that sorts the training examples by some measure of their difficulty and gradually exposes them to the learner to improve the network performance. Motivated by our insights from implicit curriculum ordering, we first introduce a simple curriculum learning strategy that uses statistical measures such as standard deviation and entropy values to score the difficulty of data points for real image classification tasks. We empirically show its improvements in performance with convolutional and fully-connected neural networks on multiple real image datasets. We also propose and study the performance of a dynamic curriculum learning algorithm. Our dynamic curriculum algorithm tries to reduce the distance between the network weight and an optimal weight at any training step by greedily sampling examples with gradients that are directed towards the optimal weight. Further, we use our algorithms to discuss why curriculum learning is helpful.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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