为什么深度神经网络难以训练Why are deep neural networks hard to train?

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为什么深度神经网络难以训练Why are deep neural networks hard to train?

Imagine you're an engineer who has been asked to design a computer from scratch. One day you're working away in your office, designing logical circuits, setting out AND gates, OR gates, and so on, when your boss walks in with bad news. The customer h…

AlphaGo论文的译文，用深度神经网络和树搜索征服围棋：Mastering the game of Go with deep neural networks and tree search

转载请声明 http://blog.csdn.net/u013390476/article/details/50925347 前言: 围棋的英文是 the game of Go,标题翻译为:<用深度神经网络和树搜索征服围棋>.译者简单介绍:大三,211,计算机科学与技术专业,平均分92分,专业第一.为了更好地翻译此文.译者查看了非常多资料.译者翻译此论文已尽全力,不足之处希望读者指出. 在AlphaGo的影响之下,全社会对人工智能的关注进一步提升. 3月12日,AlphaGo 第三次击败李世石…

[译]深度神经网络的多任务学习概览(An Overview of Multi-task Learning in Deep Neural Networks)

译自:http://sebastianruder.com/multi-task/ 1. 前言在机器学习中,我们通常关心优化某一特定指标,不管这个指标是一个标准值,还是企业KPI.为了达到这个目标,我们训练单一模型或多个模型集合来完成指定得任务.然后,我们通过精细调参,来改进模型直至性能不再提升.尽管这样做可以针对一个任务得到一个可接受得性能,但是我们可能忽略了一些信息,这些信息有助于在我们关心的指标上做得更好.具体来说,这些信息就是相关任务的监督数据.通过在相关任务间共享表示信息,我们的模型在…

吴恩达《深度学习》-课后测验-第一门课 (Neural Networks and Deep Learning)-Week 4 - Key concepts on Deep Neural Networks（第四周测验 – 深层神经网络）

Week 4 Quiz - Key concepts on Deep Neural Networks(第四周测验 – 深层神经网络) \1. What is the "cache" used for in our implementation of forward propagation and backward propagation?(在实现前向传播和反向传播中使用的"cache"是什么?) [ ]It is used to cache the interme…

吴恩达《深度学习》-第一门课 (Neural Networks and Deep Learning)-第四周：深层神经网络(Deep Neural Networks)-课程笔记

第四周:深层神经网络(Deep Neural Networks) 4.1 深层神经网络(Deep L-layer neural network) 有一些函数,只有非常深的神经网络能学会,而更浅的模型则办不到. 对于给定的问题很难去提前预测到底需要多深的神经网络,所以先去尝试逻辑回归,尝试一层然后两层隐含层, 然后把隐含层的数量看做是另一个可以自由选择大小的超参数,然后再保留交叉验证数据上评估,或者用开发集来评估. 一些符号注意: 用 L 表示层数,上图5hidden layers :…

深度神经网络入门教程Deep Neural Networks: A Getting Started Tutorial

Deep Neural Networks are the more computationally powerful cousins to regular neural networks. Learn exactly what DNNs are and why they are the hottest topic in machine learning research. The term deep neural network can have several meanings, but on…

Neural Networks and Deep Learning 课程笔记（第四周）深层神经网络（Deep Neural Networks）

1. 深层神经网络(Deep L-layer neural network ) 2. 前向传播和反向传播(Forward and backward propagation) 3. 总结 4. 深层网络中的前向传播(Forward propagation in a Deep Network) 向量化实现过程可以写成: 注:这里只能用一个显示for循环,l 从 1 到 L,然后一层接着一层去计算. 如何减少bug 4.1 核对矩阵的维数(Getting your matrix dimensions…

深度学习（六十九）darknet 实现实验 Compressing Deep Neural Networks with Pruning, Trained Quantization and Huffma

本文主要实验文献文献<Deep Compression: Compressing Deep Neural Networks with Pruning, Trained Quantization and Huffman Coding>算法,在tiny-yolo coco上的压缩效果,在darknet基础上,编写该算法进行压缩实验,结果如下: 原始模型大小64M:mAP=0.224 训练500次,模型大小54M:mAP=0.203 训练5000次,模型大小49M:mAP=0.214 训练50000…

论文翻译：2018_Source localization using deep neural networks in a shallow water environment

论文地址:https://asa.scitation.org/doi/abs/10.1121/1.5036725 深度神经网络在浅水环境中的源定位摘要: 深度神经网络(DNNs)在表征复杂的非线性关系方面具有优势.本文将DNNs应用于浅水环境下的源定位.提出了两种方法,通过不同的神经网络结构来估计宽带源的范围和深度.第一阶段采用经典的两阶段方案,特征提取和DNN分析是两个独立的步骤;与模态信号空间相关联的特征向量被提取为输入特征.然后,利用时滞神经网络对长期特征表示进行建模,构建回归模型;第二…

课程一(Neural Networks and Deep Learning)，第四周（Deep Neural Networks）—— 0.学习目标

Understand the key computations underlying deep learning, use them to build and train deep neural networks, and apply it to computer vision. 学习目标 See deep neural networks as successive blocks put one after each other Build and train a deep L-layer Ne…