Photorealistic style transfer aims to transfer the artistic style of an image onto an input image or video while keeping photorealism. In this paper, we think it's the summary statistics matching scheme in existing algorithms that leads to unrealistic stylization. To avoid employing the popular Gram loss, we propose a self-supervised style transfer framework, which contains a style removal part and a style restoration part. The style removal network removes the original image styles, and the style restoration network recovers image styles in a supervised manner. Meanwhile, to address the problems in current feature transformation methods, we propose decoupled instance normalization to decompose feature transformation into style whitening and restylization. It works quite well in ColoristaNet and can transfer image styles efficiently while keeping photorealism. To ensure temporal coherency, we also incorporate optical flow methods and ConvLSTM to embed contextual information. Experiments demonstrates that ColoristaNet can achieve better stylization effects when compared with state-of-the-art algorithms.
translated by 谷歌翻译
This paper introduces a new few-shot learning pipeline that casts relevance ranking for image retrieval as binary ranking relation classification. In comparison to image classification, ranking relation classification is sample efficient and domain agnostic. Besides, it provides a new perspective on few-shot learning and is complementary to state-of-the-art methods. The core component of our deep neural network is a simple MLP, which takes as input an image triplet encoded as the difference between two vector-Kronecker products, and outputs a binary relevance ranking order. The proposed RankMLP can be built on top of any state-of-the-art feature extractors, and our entire deep neural network is called the ranking deep neural network, or RankDNN. Meanwhile, RankDNN can be flexibly fused with other post-processing methods. During the meta test, RankDNN ranks support images according to their similarity with the query samples, and each query sample is assigned the class label of its nearest neighbor. Experiments demonstrate that RankDNN can effectively improve the performance of its baselines based on a variety of backbones and it outperforms previous state-of-the-art algorithms on multiple few-shot learning benchmarks, including miniImageNet, tieredImageNet, Caltech-UCSD Birds, and CIFAR-FS. Furthermore, experiments on the cross-domain challenge demonstrate the superior transferability of RankDNN.The code is available at: https://github.com/guoqianyu-alberta/RankDNN.
translated by 谷歌翻译
我们描述了JD Explore Academy对WMT 2022共享的一般翻译任务的提交。我们参加了所有高资源曲目和一条中型曲目,包括中文英语,德语英语,捷克语英语,俄语 - 英语和日语英语。我们通过扩大两个主要因素,即语言对和模型大小,即\ textbf {vega-mt}系统来推动以前的工作的极限 - 进行翻译的双向培训。至于语言对,我们将“双向”扩展到“多向”设置,涵盖所有参与语言,以利用跨语言的常识,并将其转移到下游双语任务中。至于型号尺寸,我们将变压器限制到拥有近47亿参数的极大模型,以完全增强我们VEGA-MT的模型容量。此外,我们采用数据增强策略,例如单语数据的循环翻译以及双语和单语数据的双向自我训练,以全面利用双语和单语言数据。为了使我们的Vega-MT适应通用域测试集,设计了概括调整。根据受约束系统的官方自动分数,根据图1所示的sacrebleu,我们在{zh-en(33.5),en-zh(49.7)(49.7),de-en(33.7)上获得了第一名-de(37.8),CS-EN(54.9),En-CS(41.4)和En-Ru(32.7)},在{ru-en(45.1)和Ja-en(25.6)}和第三名上的第二名和第三名在{en-ja(41.5)}上; W.R.T彗星,我们在{zh-en(45.1),en-zh(61.7),de-en(58.0),en-de(63.2),cs-en(74.7),ru-en(ru-en(ru-en)上,我们获得了第一名64.9),en-ru(69.6)和en-ja(65.1)},分别在{en-cs(95.3)和ja-en(40.6)}上的第二名。将发布模型,以通过GitHub和Omniforce平台来促进MT社区。
translated by 谷歌翻译
如今,基础模型已成为人工智能中的基本基础设施之一,铺平了通往通用情报的方式。但是,现实提出了两个紧急挑战:现有的基础模型由英语社区主导;用户通常会获得有限的资源,因此不能总是使用基础模型。为了支持中文社区的发展,我们介绍了一个名为Fengshenbang的开源项目,该项目由认知计算与自然语言研究中心(CCNL)领导。我们的项目具有全面的功能,包括大型预培训模型,用户友好的API,基准,数据集等。我们将所有这些都包装在三个子项目中:风水次模型,风水框架和狂热基准。 Fengshenbang的开源路线图旨在重新评估中国预培训的大型大型模型的开源社区,促使整个中国大型模型社区的发展。我们还希望构建一个以用户为中心的开源生态系统,以允许个人访问所需的模型以匹配其计算资源。此外,我们邀请公司,大学和研究机构与我们合作建立大型开源模型的生态系统。我们希望这个项目将成为中国认知情报的基础。
translated by 谷歌翻译
大规模的暗网(DW)平台的自动监测是发展主动网络威胁情报(CTI)的第一步。虽然有高效的方法用于从表面纤维网收集数据,但大规模的暗网络数据收集通常受到防爬爬措施的阻碍。特别是,基于文本的CAPTCHA是暗网中最普遍的和禁止这些措施的最普遍和禁止的类型。基于文本的CAPTCHA通过强制用户输入难以识别的字母数字字符的组合来识别和阻止自动爬虫。在暗网中,CAPTCHA图像被精心设计,具有额外的背景噪声和可变性格长度,以防止自动验证码断裂。现有的自动CAPTCHA断裂方法难以克服这些暗网挑战。因此,解决基于暗网络文本的CAPTCHA一直依赖于人类参与,这是劳动密集型且耗时的人。在这项研究中,我们提出了一种新颖的框架,用于自动破坏暗网CAPTCHA,以促进暗网络数据收集。该框架包括一种新的生成方法,可以识别基于黑色的Web文本的CAPTCHA,其中包含嘈杂的背景和可变字符长度。为了消除对人类参与的需求,所提出的框架利用生成的对抗网络(GaN)来抵消暗网背景噪声并利用增强的字符分割算法来处理具有可变字符长度的CAPTCHA图像。我们提出的框架DW-GaN在多个暗网络CAPTCHA测试台上进行了系统地评估。 DW-GaN在所有数据集中大大表现出最先进的基准方法,在仔细收集的真实世界黑色网络数据集中实现了超过94.4%的成功率......
translated by 谷歌翻译
时空表示学习对于视频自我监督的表示至关重要。最近的方法主要使用对比学习和借口任务。然而,这些方法通过在潜在空间中的特征相似性判断所学习表示的中间状态的同时通过潜伏空间中的特征相似性来学习表示,这限制了整体性能。在这项工作中,考虑到采样实例的相似性作为中级状态,我们提出了一种新的借口任务 - 时空 - 时间重叠速率(Stor)预测。它源于观察到,人类能够区分空间和时间在视频中的重叠率。此任务鼓励模型区分两个生成的样本的存储来学习表示。此外,我们采用了联合优化,将借口任务与对比学习相结合,以进一步增强时空表示学习。我们还研究了所提出的计划中每个组分的相互影响。广泛的实验表明,我们的拟议Stor任务可以赞成对比学习和借口任务。联合优化方案可以显着提高视频理解中的时空表示。代码可在https://github.com/katou2/cstp上获得。
translated by 谷歌翻译
通过FPGA加速神经网络推断作为一种流行的选择,因为FPGA的重新配置性和高性能计算能力本质上满足了快速发展神经算法的计算需求。然而,FPGA(例如,Xilinx DPU)上的受欢迎的神经加速器主要利用DSP资源来构建其处理单元,而丰富的LUT资源没有充分利用。通过软件 - 硬件共同设计方法,在这项工作中,我们开发了一种基于FPGA的异构计算系统,用于神经网络加速度。从硬件角度来看,所提出的加速器由基于DSP和LUT的一般矩阵乘法(GEMM)计算核心组成,其以异质方式形成整个计算系统。基于DSP和LUT的GEMM核心计算为W.R.T统一指令集架构(ISA)和Unified Buffers。沿着神经网络推理路径的数据流,卷积/完全连接层的计算分为两部分,由基于DSP和LUT的GEMM核心异步处理。从软件的角度来看,我们在数学上和系统地模拟所提出的异构加速器的延迟和资源利用,关于不同的系统设计配置。通过利用加强学习技术,我们构建一个框架,实现目标异构加速器的设计规范的端到端选择和优化,包括工作量分裂策略,混合精度量化方案和DSP和LUT的资源分配 - 核。凭借提出的设计框架和异构计算系统,我们的设计优于最先进的混合和匹配设计,延迟减少了1.12-1.32倍,推理准确性更高。 N3H核心是开放的:https://github.com/elliothe/n3h_core。
translated by 谷歌翻译
Learning the underlying distribution of molecular graphs and generating high-fidelity samples is a fundamental research problem in drug discovery and material science. However, accurately modeling distribution and rapidly generating novel molecular graphs remain crucial and challenging goals. To accomplish these goals, we propose a novel Conditional Diffusion model based on discrete Graph Structures (CDGS) for molecular graph generation. Specifically, we construct a forward graph diffusion process on both graph structures and inherent features through stochastic differential equations (SDE) and derive discrete graph structures as the condition for reverse generative processes. We present a specialized hybrid graph noise prediction model that extracts the global context and the local node-edge dependency from intermediate graph states. We further utilize ordinary differential equation (ODE) solvers for efficient graph sampling, based on the semi-linear structure of the probability flow ODE. Experiments on diverse datasets validate the effectiveness of our framework. Particularly, the proposed method still generates high-quality molecular graphs in a limited number of steps.
translated by 谷歌翻译
Graph generative models have broad applications in biology, chemistry and social science. However, modelling and understanding the generative process of graphs is challenging due to the discrete and high-dimensional nature of graphs, as well as permutation invariance to node orderings in underlying graph distributions. Current leading autoregressive models fail to capture the permutation invariance nature of graphs for the reliance on generation ordering and have high time complexity. Here, we propose a continuous-time generative diffusion process for permutation invariant graph generation to mitigate these issues. Specifically, we first construct a forward diffusion process defined by a stochastic differential equation (SDE), which smoothly converts graphs within the complex distribution to random graphs that follow a known edge probability. Solving the corresponding reverse-time SDE, graphs can be generated from newly sampled random graphs. To facilitate the reverse-time SDE, we newly design a position-enhanced graph score network, capturing the evolving structure and position information from perturbed graphs for permutation equivariant score estimation. Under the evaluation of comprehensive metrics, our proposed generative diffusion process achieves competitive performance in graph distribution learning. Experimental results also show that GraphGDP can generate high-quality graphs in only 24 function evaluations, much faster than previous autoregressive models.
translated by 谷歌翻译
在本文中,我们将解决方案介绍给Muse-Humor的多模式情感挑战(MUSE)2022的邮件,库穆尔人子挑战的目标是发现幽默并从德国足球馆的视听录音中计算出AUC新闻发布会。它是针对教练表现出的幽默的注释。对于此子挑战,我们首先使用变压器模块和BilstM模块构建一个判别模型,然后提出一种混合融合策略,以使用每种模式的预测结果来提高模型的性能。我们的实验证明了我们提出的模型和混合融合策略对多模式融合的有效性,并且我们在测试集中提出的模型的AUC为0.8972。
translated by 谷歌翻译