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。
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文本表示的预培训(PT)已成功应用于低资源神经机器翻译(NMT)。但是,它通常无法在资源丰富的NMT上获得显着的收益(有时甚至更糟),与其随机定位(RI)对应物相当。我们迈出了第一步,通过两个探测分析来研究资源丰富的场景中PT和RI之间的互补性,并发现:1)PT并不提高准确性,而是通过实现平坦的损失景观而不是RI的概括。 2)PT不是提高词汇选择的信心,而是通过分配更平滑的词汇概率分布而不是RI的词汇分布来提高词汇选择的信心。基于这些见解,我们建议将它们的互补性与模型融合算法相结合,该算法利用最佳传输来对齐PT和RI之间的神经元。对两个资源丰富的翻译基准的实验,WMT'17英语 - 中国(20m)和WMT'19英语 - 德国人(36m),表明PT和RI可以彼此很好地互补,可以实现实质性的改进,考虑到这两个翻译准确性,考虑到同时的翻译准确性,概括和负多样性。探测工具和代码的发布:https://github.com/zanchangtong/ptvsri。
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对于多语言序列到序列预审预周序模型(多语言SEQ2SEQ PLM),例如姆巴特(Mbart),自制的预处理任务接受了多种单语言的培训,例如25种来自CommonCrawl的语言,而下游的跨语言任务通常在双语语言子集上进行,例如英语 - 德国人,存在数据差异,即领域的差异,以及跨语言学习客观差异,即在训练和填充阶段之间的任务差异。为了弥合上述跨语言域和任务差距,我们将使用额外的代码切换恢复任务扩展了香草预后管道。具体而言,第一阶段采用自我监督的代码转换还原任务作为借口任务,从而允许多语言SEQ2SEQ PLM获取一些域内对齐信息。在第二阶段,我们正常在下游数据上微调模型。 NLG评估(12个双语翻译任务,30个零射击任务和2项跨语言摘要任务)和NLU评估(7个跨语性自然语言推理任务)的实验表明,我们的模型超过了强大的基线MBART,具有标准的FINETUNNING,这表明了我们的模型策略,一致。分析表明,我们的方法可以缩小跨语性句子表示的欧几里得距离,并通过微不足道的计算成本改善模型概括。我们在:https://github.com/zanchangtong/csr4mbart上发布代码。
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In this paper, we study the use of deep Transformer translation model for the CCMT 2022 Chinese-Thai low-resource machine translation task. We first explore the experiment settings (including the number of BPE merge operations, dropout probability, embedding size, etc.) for the low-resource scenario with the 6-layer Transformer. Considering that increasing the number of layers also increases the regularization on new model parameters (dropout modules are also introduced when using more layers), we adopt the highest performance setting but increase the depth of the Transformer to 24 layers to obtain improved translation quality. Our work obtains the SOTA performance in the Chinese-to-Thai translation in the constrained evaluation.
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Given a natural language that describes the user's demands, the NL2Code task aims to generate code that addresses the demands. This is a critical but challenging task that mirrors the capabilities of AI-powered programming. The NL2Code task is inherently versatile, diverse and complex. For example, a demand can be described in different languages, in different formats, and at different levels of granularity. This inspired us to do this survey for NL2Code. In this survey, we focus on how does neural network (NN) solves NL2Code. We first propose a comprehensive framework, which is able to cover all studies in this field. Then, we in-depth parse the existing studies into this framework. We create an online website to record the parsing results, which tracks existing and recent NL2Code progress. In addition, we summarize the current challenges of NL2Code as well as its future directions. We hope that this survey can foster the evolution of this field.
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Current computer vision models, unlike the human visual system, cannot yet achieve general-purpose visual understanding. Existing efforts to create a general vision model are limited in the scope of assessed tasks and offer no overarching framework to perform them holistically. We present a new comprehensive benchmark, General-purpose Visual Understanding Evaluation (G-VUE), covering the full spectrum of visual cognitive abilities with four functional domains $\unicode{x2014}$ Perceive, Ground, Reason, and Act. The four domains are embodied in 11 carefully curated tasks, from 3D reconstruction to visual reasoning and manipulation. Along with the benchmark, we provide a general encoder-decoder framework to allow for the evaluation of arbitrary visual representation on all 11 tasks. We evaluate various pre-trained visual representations with our framework and observe that (1) Transformer-based visual backbone generally outperforms CNN-based backbone on G-VUE, (2) visual representations from vision-language pre-training are superior to those with vision-only pre-training across visual tasks. With G-VUE, we provide a holistic evaluation standard to motivate research toward building general-purpose visual systems via obtaining more general-purpose visual representations.
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Hybrid tabular-textual question answering (QA) requires reasoning from heterogeneous information, and the types of reasoning are mainly divided into numerical reasoning and span extraction. Despite being the main challenge of the task compared to extractive QA, current numerical reasoning method simply uses LSTM to autoregressively decode program sequences, and each decoding step produces either an operator or an operand. However, the step-by-step decoding suffers from exposure bias, and the accuracy of program generation drops sharply with progressive decoding. In this paper, we propose a non-autoregressive program generation framework, which facilitates program generation in parallel. Our framework, which independently generates complete program tuples containing both operators and operands, can significantly boost the speed of program generation while addressing the error accumulation issue. Our experiments on the MultiHiertt dataset shows that our model can bring about large improvements (+7.97 EM and +6.38 F1 points) over the strong baseline, establishing the new state-of-the-art performance, while being much faster (21x) in program generation. The performance drop of our method is also significantly smaller than the baseline with increasing numbers of numerical reasoning steps.
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随着几个行业正在朝着建模大规模的3D虚拟世界迈进,因此需要根据3D内容的数量,质量和多样性来扩展的内容创建工具的需求变得显而易见。在我们的工作中,我们旨在训练Parterant 3D生成模型,以合成纹理网格,可以通过3D渲染引擎直接消耗,因此立即在下游应用中使用。 3D生成建模的先前工作要么缺少几何细节,因此在它们可以生成的网格拓扑中受到限制,通常不支持纹理,或者在合成过程中使用神经渲染器,这使得它们在常见的3D软件中使用。在这项工作中,我们介绍了GET3D,这是一种生成模型,该模型直接生成具有复杂拓扑,丰富几何细节和高保真纹理的显式纹理3D网格。我们在可区分的表面建模,可区分渲染以及2D生成对抗网络中桥接了最新成功,以从2D图像集合中训练我们的模型。 GET3D能够生成高质量的3D纹理网格,从汽车,椅子,动物,摩托车和人类角色到建筑物,对以前的方法进行了重大改进。
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时间动作本地化在视频分析中起着重要作用,该视频分析旨在将动作定位和分类在未修剪视频中。先前的方法通常可以预测单个时间尺度的特征空间上的动作。但是,低级量表的时间特征缺乏足够的语义来进行动作分类,而高级尺度则无法提供动作边界的丰富细节。为了解决这个问题,我们建议预测多个颞尺度特征空间的动作。具体而言,我们使用不同尺度的精致特征金字塔将语义从高级尺度传递到低级尺度。此外,为了建立整个视频的长时间尺度,我们使用时空变压器编码器来捕获视频帧的远程依赖性。然后,具有远距离依赖性的精制特征被送入分类器以进行粗糙的动作预测。最后,为了进一步提高预测准确性,我们建议使用框架级别的自我注意模块来完善每个动作实例的分类和边界。广泛的实验表明,所提出的方法可以超越Thumos14数据集上的最先进方法,并在ActivityNet1.3数据集上实现可比性的性能。与A2NET(tip20,avg \ {0.3:0.7 \}),sub-action(csvt2022,avg \ {0.1:0.5 \})和afsd(cvpr21,avg \ {0.3:0.7 \}) ,提出的方法分别可以提高12.6 \%,17.4 \%和2.2 \%
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在自动驾驶汽车和移动机器人上使用的多光束liDAR传感器可获得3D范围扫描的序列(“帧”)。由于有限的角度扫描分辨率和阻塞,每个框架都稀疏地覆盖了场景。稀疏性限制了语义分割或表面重建等下游过程的性能。幸运的是,当传感器移动时,帧将从一系列不同的观点捕获。这提供了互补的信息,当积累在公共场景坐标框架中时,会产生更密集的采样和对基础3D场景的更完整覆盖。但是,扫描场景通常包含移动对象。这些对象上的点不能仅通过撤消扫描仪的自我运动来正确对齐。在本文中,我们将多帧点云积累作为3D扫描序列的中级表示,并开发了一种利用室外街道场景的感应偏见的方法,包括其几何布局和对象级刚性。与最新的场景流估计器相比,我们提出的方法旨在使所有3D点在共同的参考框架中对齐,以正确地积累各个对象上的点。我们的方法大大减少了几个基准数据集上的对齐错误。此外,累积的点云使诸如表面重建之类的高级任务受益。
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