Applying convolutional neural networks to large images is computationally expensive because the amount of computation scales linearly with the number of image pixels. We present a novel recurrent neural network model that is capable of extracting information from an image or video by adaptively selecting a sequence of regions or locations and only processing the selected regions at high resolution. Like convolutional neural networks, the proposed model has a degree of translation invariance built-in, but the amount of computation it performs can be controlled independently of the input image size. While the model is non-differentiable, it can be trained using reinforcement learning methods to learn task-specific policies. We evaluate our model on several image classification tasks, where it significantly outperforms a convolutional neural network baseline on cluttered images, and on a dynamic visual control problem, where it learns to track a simple object without an explicit training signal for doing so.

使用经常性神经网络进行视觉关注的想法在计算机视觉社区中受到普及。虽然经常性注意模型（RAM）利用闪烁的贴片尺寸以增加其范围，但它可能导致高方差和不稳定性。例如，我们需要高斯策略具有高差异来探索大型图像中的兴趣对象，这可能导致随机搜索和不稳定的学习。在本文中，我们建议将自上而下和自下而上的关注统一，以进行反复性的视觉关注。我们的模型利用了图像金字塔和Q学习，以在自上而下的注意机制中选择利益区域，这反过来又指导了自下而上的方法的政策搜索。此外，我们在自下而上的经常性神经网络中添加了另外两个约束，以便更好地探索。我们在端到端强化学习框架中培训我们的模型，并在视觉分类任务中评估我们的方法。实验结果优于卷积神经网络（CNNS）基线和可视分类任务的自下而上的经常性注意模型。

We present the first deep learning model to successfully learn control policies directly from high-dimensional sensory input using reinforcement learning. The model is a convolutional neural network, trained with a variant of Q-learning, whose input is raw pixels and whose output is a value function estimating future rewards. We apply our method to seven Atari 2600 games from the Arcade Learning Environment, with no adjustment of the architecture or learning algorithm. We find that it outperforms all previous approaches on six of the games and surpasses a human expert on three of them.

尽管深度强化学习（RL）最近取得了许多成功，但其方法仍然效率低下，这使得在数据方面解决了昂贵的许多问题。我们的目标是通过利用未标记的数据中的丰富监督信号来进行学习状态表示，以解决这一问题。本文介绍了三种不同的表示算法，可以访问传统RL算法使用的数据源的不同子集使用：（i）GRICA受到独立组件分析（ICA）的启发，并训练深层神经网络以输出统计独立的独立特征。输入。 Grica通过最大程度地减少每个功能与其他功能之间的相互信息来做到这一点。此外，格里卡仅需要未分类的环境状态。 （ii）潜在表示预测（LARP）还需要更多的上下文：除了要求状态作为输入外，它还需要先前的状态和连接它们的动作。该方法通过预测当前状态和行动的环境的下一个状态来学习状态表示。预测器与图形搜索算法一起使用。 （iii）重新培训通过训练深层神经网络来学习国家表示，以学习奖励功能的平滑版本。该表示形式用于预处理输入到深度RL，而奖励预测指标用于奖励成型。此方法仅需要环境中的状态奖励对学习表示表示。我们发现，每种方法都有其优势和缺点，并从我们的实验中得出结论，包括无监督的代表性学习在RL解决问题的管道中可以加快学习的速度。

我们提出了一种新的四管齐下的方法，在文献中首次建立消防员的情境意识。我们构建了一系列深度学习框架，彼此之叠，以提高消防员在紧急首次响应设置中进行的救援任务的安全性，效率和成功完成。首先，我们使用深度卷积神经网络（CNN）系统，以实时地分类和识别来自热图像的感兴趣对象。接下来，我们将此CNN框架扩展了对象检测，跟踪，分割与掩码RCNN框架，以及具有多模级自然语言处理（NLP）框架的场景描述。第三，我们建立了一个深入的Q学习的代理，免受压力引起的迷失方向和焦虑，能够根据现场消防环境中观察和存储的事实来制定明确的导航决策。最后，我们使用了一种低计算无监督的学习技术，称为张量分解，在实时对异常检测进行有意义的特征提取。通过这些临时深度学习结构，我们建立了人工智能系统的骨干，用于消防员的情境意识。要将设计的系统带入消防员的使用，我们设计了一种物理结构，其中处理后的结果被用作创建增强现实的投入，这是一个能够建议他们所在地的消防员和周围的关键特征，这对救援操作至关重要在手头，以及路径规划功能，充当虚拟指南，以帮助迷彩的第一个响应者恢复安全。当组合时，这四种方法呈现了一种新颖的信息理解，转移和综合方法，这可能会大大提高消防员响应和功效，并降低寿命损失。

Deep reinforcement learning is poised to revolutionise the field of AI and represents a step towards building autonomous systems with a higher level understanding of the visual world. Currently, deep learning is enabling reinforcement learning to scale to problems that were previously intractable, such as learning to play video games directly from pixels. Deep reinforcement learning algorithms are also applied to robotics, allowing control policies for robots to be learned directly from camera inputs in the real world. In this survey, we begin with an introduction to the general field of reinforcement learning, then progress to the main streams of value-based and policybased methods. Our survey will cover central algorithms in deep reinforcement learning, including the deep Q-network, trust region policy optimisation, and asynchronous advantage actor-critic. In parallel, we highlight the unique advantages of deep neural networks, focusing on visual understanding via reinforcement learning. To conclude, we describe several current areas of research within the field.

注意力是一种令人震惊的状态，能够通过在一条信息上选择性地关注一个信息，同时忽略其他可察觉的信息，能够在人类中处理有限的处理瓶颈。几十年来，在哲学，心理学，神经科学和计算中研究了注意的概念和函数。目前，这家酒店已广泛探索深神经网络。现在可以使用许多不同的神经关注模型，并且在过去六年中是一个非常活跃的研究区域。从关注的理论观点来看，该调查对主要神经关注模型进行了批判性分析。在这里，我们提出了一种与预测深度学习的理论方面的分类学。我们的分类系统提供了一个组织结构，提出了新问题和结构对现有的注意机制的理解。特别地，17种来自心理学和神经科学的标准和神经科学经典研究的标准用于分析一组超过650篇论文的51个主要模型的定性比较和批判性分析。此外，我们突出了尚未探索的几个理论问题，包括讨论生物合理性，突出目前的研究趋势，并为未来提供见解。

Convolutional Neural Networks define an exceptionally powerful class of models, but are still limited by the lack of ability to be spatially invariant to the input data in a computationally and parameter efficient manner. In this work we introduce a new learnable module, the Spatial Transformer, which explicitly allows the spatial manipulation of data within the network. This differentiable module can be inserted into existing convolutional architectures, giving neural networks the ability to actively spatially transform feature maps, conditional on the feature map itself, without any extra training supervision or modification to the optimisation process. We show that the use of spatial transformers results in models which learn invariance to translation, scale, rotation and more generic warping, resulting in state-of-the-art performance on several benchmarks, and for a number of classes of transformations.

Deep Reinforcement Learning has yielded proficient controllers for complex tasks. However, these controllers have limited memory and rely on being able to perceive the complete game screen at each decision point. To address these shortcomings, this article investigates the effects of adding recurrency to a Deep Q-Network (DQN) by replacing the first post-convolutional fully-connected layer with a recurrent LSTM. The resulting Deep Recurrent Q-Network (DRQN), although capable of seeing only a single frame at each timestep, successfully integrates information through time and replicates DQN's performance on standard Atari games and partially observed equivalents featuring flickering game screens. Additionally, when trained with partial observations and evaluated with incrementally more complete observations, DRQN's performance scales as a function of observability. Conversely, when trained with full observations and evaluated with partial observations, DRQN's performance degrades less than DQN's. Thus, given the same length of history, recurrency is a viable alternative to stacking a history of frames in the DQN's input layer and while recurrency confers no systematic advantage when learning to play the game, the recurrent net can better adapt at evaluation time if the quality of observations changes.

This paper introduces the Deep Recurrent Attentive Writer (DRAW) neural network architecture for image generation. DRAW networks combine a novel spatial attention mechanism that mimics the foveation of the human eye, with a sequential variational auto-encoding framework that allows for the iterative construction of complex images. The system substantially improves on the state of the art for generative models on MNIST, and, when trained on the Street View House Numbers dataset, it generates images that cannot be distinguished from real data with the naked eye.

In recent years there have been many successes of using deep representations in reinforcement learning. Still, many of these applications use conventional architectures, such as convolutional networks, LSTMs, or auto-encoders. In this paper, we present a new neural network architecture for model-free reinforcement learning. Our dueling network represents two separate estimators: one for the state value function and one for the state-dependent action advantage function. The main benefit of this factoring is to generalize learning across actions without imposing any change to the underlying reinforcement learning algorithm. Our results show that this architecture leads to better policy evaluation in the presence of many similar-valued actions. Moreover, the dueling architecture enables our RL agent to outperform the state-of-the-art on the Atari 2600 domain.

这是一门专门针对STEM学生开发的介绍性机器学习课程。我们的目标是为有兴趣的读者提供基础知识，以在自己的项目中使用机器学习，并将自己熟悉术语作为进一步阅读相关文献的基础。在这些讲义中，我们讨论受监督，无监督和强化学习。注释从没有神经网络的机器学习方法的说明开始，例如原理分析，T-SNE，聚类以及线性回归和线性分类器。我们继续介绍基本和先进的神经网络结构，例如密集的进料和常规神经网络，经常性的神经网络，受限的玻尔兹曼机器，（变性）自动编码器，生成的对抗性网络。讨论了潜在空间表示的解释性问题，并使用梦和对抗性攻击的例子。最后一部分致力于加强学习，我们在其中介绍了价值功能和政策学习的基本概念。

Current learning machines have successfully solved hard application problems, reaching high accuracy and displaying seemingly "intelligent" behavior. Here we apply recent techniques for explaining decisions of state-of-the-art learning machines and analyze various tasks from computer vision and arcade games. This showcases a spectrum of problem-solving behaviors ranging from naive and short-sighted, to wellinformed and strategic. We observe that standard performance evaluation metrics can be oblivious to distinguishing these diverse problem solving behaviors. Furthermore, we propose our semi-automated Spectral Relevance Analysis that provides a practically effective way of characterizing and validating the behavior of nonlinear learning machines. This helps to assess whether a learned model indeed delivers reliably for the problem that it was conceived for. Furthermore, our work intends to add a voice of caution to the ongoing excitement about machine intelligence and pledges to evaluate and judge some of these recent successes in a more nuanced manner.

The last decade witnessed increasingly rapid progress in self-driving vehicle technology, mainly backed up by advances in the area of deep learning and artificial intelligence. The objective of this paper is to survey the current state-of-the-art on deep learning technologies used in autonomous driving. We start by presenting AI-based self-driving architectures, convolutional and recurrent neural networks, as well as the deep reinforcement learning paradigm. These methodologies form a base for the surveyed driving scene perception, path planning, behavior arbitration and motion control algorithms. We investigate both the modular perception-planning-action pipeline, where each module is built using deep learning methods, as well as End2End systems, which directly map sensory information to steering commands. Additionally, we tackle current challenges encountered in designing AI architectures for autonomous driving, such as their safety, training data sources and computational hardware. The comparison presented in this survey helps to gain insight into the strengths and limitations of deep learning and AI approaches for autonomous driving and assist with design choices. 1

A generative recurrent neural network is quickly trained in an unsupervised manner to model popular reinforcement learning environments through compressed spatiotemporal representations. The world model's extracted features are fed into compact and simple policies trained by evolution, achieving state of the art results in various environments. We also train our agent entirely inside of an environment generated by its own internal world model, and transfer this policy back into the actual environment. Interactive version of paper: https://worldmodels.github.io 32nd Conference on Neural Information Processing Systems (NIPS 2018),

基于视觉的导航需要处理复杂的信息以做出以任务为导向的决策。应用包括自动驾驶机器人，自动驾驶汽车以及对人类的辅助愿景。该过程中的关键要素之一是在像素空间中提取和选择相关特征，以便基于操作选择，适合哪种机器学习技术。但是，在模拟中接受培训的深度强化学习代理人在现实世界中部署在现实世界中通常会表现出不满意的结果，这是因为感知差异称为$ \ textit {现实gap} $。尚未探索以弥合这一差距的方法是自我注意力。在本文中，我们（1）对基于3D环境的基于自我注意力的导航进行系统探索，并从不同的超参数集中观察到的行为，包括它们的概括能力； （2）目前的策略来提高代理的概括能力和导航行为； （3）展示在模拟中训练的模型如何能够实时处理现实世界图像。据我们所知，这是使用少于4000个参数成功导航3D动作空间的基于自我注意力的代理的首次演示。

动态神经网络是深度学习中的新兴的研究课题。与具有推断阶段的固定计算图和参数的静态模型相比，动态网络可以使其结构或参数适应不同的输入，从而在本调查中的准确性，计算效率，适应性等方面的显着优势。我们全面地通过将动态网络分为三个主要类别：1）使用数据相关的架构或参数进行处理的实例 - Wise-Wise DiveS动态模型的速度开发区域2）关于图像数据的不同空间位置和3）沿着诸如视频和文本的顺序数据的时间维度执行自适应推断的时间明智的动态模型进行自适应计算的空间 - 方向动态网络。系统地审查了动态网络的重要研究问题，例如架构设计，决策方案，优化技术和应用。最后，我们与有趣的未来研究方向讨论了该领域的开放问题。

Imitation learning techniques aim to mimic human behavior in a given task. An agent (a learning machine) is trained to perform a task from demonstrations by learning a mapping between observations and actions. The idea of teaching by imitation has been around for many years, however, the field is gaining attention recently due to advances in computing and sensing as well as rising demand for intelligent applications. The paradigm of learning by imitation is gaining popularity because it facilitates teaching complex tasks with minimal expert knowledge of the tasks. Generic imitation learning methods could potentially reduce the problem of teaching a task to that of providing demonstrations; without the need for explicit programming or designing reward functions specific to the task. Modern sensors are able to collect and transmit high volumes of data rapidly, and processors with high computational power allow fast processing that maps the sensory data to actions in a timely manner. This opens the door for many potential AI applications that require real-time perception and reaction such as humanoid robots, self-driving vehicles, human computer interaction and computer games to name a few. However, specialized algorithms are needed to effectively and robustly learn models as learning by imitation poses its own set of challenges. In this paper, we survey imitation learning methods and present design options in different steps of the learning process. We introduce a background and motivation for the field as well as highlight challenges specific to the imitation problem. Methods for designing and evaluating imitation learning tasks are categorized and reviewed. Special attention is given to learning methods in robotics and games as these domains are the most popular in the literature and provide a wide array of problems and methodologies. We extensively discuss combining imitation learning approaches using different sources and methods, as well as incorporating other motion learning methods to enhance imitation. We also discuss the potential impact on industry, present major applications and highlight current and future research directions.

Deep neural networks (DNNs) are currently widely used for many artificial intelligence (AI) applications including computer vision, speech recognition, and robotics. While DNNs deliver state-of-the-art accuracy on many AI tasks, it comes at the cost of high computational complexity. Accordingly, techniques that enable efficient processing of DNNs to improve energy efficiency and throughput without sacrificing application accuracy or increasing hardware cost are critical to the wide deployment of DNNs in AI systems.This article aims to provide a comprehensive tutorial and survey about the recent advances towards the goal of enabling efficient processing of DNNs. Specifically, it will provide an overview of DNNs, discuss various hardware platforms and architectures that support DNNs, and highlight key trends in reducing the computation cost of DNNs either solely via hardware design changes or via joint hardware design and DNN algorithm changes. It will also summarize various development resources that enable researchers and practitioners to quickly get started in this field, and highlight important benchmarking metrics and design considerations that should be used for evaluating the rapidly growing number of DNN hardware designs, optionally including algorithmic co-designs, being proposed in academia and industry.The reader will take away the following concepts from this article: understand the key design considerations for DNNs; be able to evaluate different DNN hardware implementations with benchmarks and comparison metrics; understand the trade-offs between various hardware architectures and platforms; be able to evaluate the utility of various DNN design techniques for efficient processing; and understand recent implementation trends and opportunities.