在端到端RNN-TransDucer(RNN-T)中使用外部语言模型(ELM)使用仅文本数据进行语音识别是具有挑战性的。最近,已经开发了一类方法,例如密度比(DR)和内部语言模型估计(ILME),表现优于经典的浅融合(SF)方法。这些方法背后的基本思想是,RNN-T后验应首先先于隐式学习的内部语言模型(ILM),以便整合ELM。尽管最近的研究表明RNN-T仅学习一些低阶语言模型信息,但DR方法使用具有完整背景的训练有素的神经语言模型,这可能不适合估计ILM并恶化整合性能。基于DR方法,我们通过用低阶弱语言模型代替估计来提出低阶密度比方法(LODR)。在英语librispeech&tedlium-2和中国wenetspeech和aishell-1数据集的内域和跨域情景上进行了广泛的经验实验。结果表明,在大多数测试中,LODR在所有任务中始终胜过所有任务,而通常接近ILME,并且比DR更好。
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已知历史和未来的上下文信息对于准确的声学建模很重要。但是,获取未来的上下文会带来流式ASR的延迟。在本文中,我们提出了一个新的框架 - 块,模拟未来的上下文和解码(Cuside)以进行流语言识别。引入了一个新的仿真模块,以递归地模拟未来的上下文帧,而无需等待未来的上下文。使用自我监督的损失与ASR模型共同训练模拟模块;ASR模型通过通常的ASR损失(例如我们实验中使用的CTC-CRF)进行了优化。实验表明,与使用真实的未来框架作为正确的上下文相比,使用模拟的未来上下文可以大大降低延迟,同时保持识别精度。使用Cuside,我们在Aishell-1数据集上获得了新的最新流媒体ASR结果。
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随着大数据的爆炸性增加,培训机器学习(ML)模型成为计算密集型工作量,需要几天甚至几周。因此,重用已经训练的模型受到了受关注的,称为转移学习。转移学习避免通过将知识从源任务转移到目标任务来避免从头开始培训新模型。现有的传输学习方法主要专注于如何通过特定源模型提高目标任务的性能,并假设给出了源模型。虽然有许多源模型可用,但数据科学家难以手动选择目标任务的最佳源模型。因此,如何在模型数据库中有效地选择合适的源模型进行模型重用是一个有趣但未解决的问题。在本文中,我们提出了SMS,有效,高效,灵活的源模型选择框架。即使源数据集具有明显不同的数据标签,SMS也是有效的,并且灵活地支持具有任何类型的结构的源模型,并且有效地避免任何培训过程。对于每个源模型,SMS首先将目标数据集中的样本加速到软标签中,通过直接将该模型直接应用于目标数据集,然后使用高斯分布适合软标签的集群,最后测量源模型使用的显着能力高斯混合的公制。此外,我们提出了一种改进的SMS(I-SMS),其降低了源模型的输出数量。 I-SMS可以显着降低选择时间,同时保留SMS的选择性能。关于一系列实用模型重用工作负载的广泛实验证明了SMS的有效性和效率。
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Masked image modeling (MIM) performs strongly in pre-training large vision Transformers (ViTs). However, small models that are critical for real-world applications cannot or only marginally benefit from this pre-training approach. In this paper, we explore distillation techniques to transfer the success of large MIM-based pre-trained models to smaller ones. We systematically study different options in the distillation framework, including distilling targets, losses, input, network regularization, sequential distillation, etc, revealing that: 1) Distilling token relations is more effective than CLS token- and feature-based distillation; 2) An intermediate layer of the teacher network as target perform better than that using the last layer when the depth of the student mismatches that of the teacher; 3) Weak regularization is preferred; etc. With these findings, we achieve significant fine-tuning accuracy improvements over the scratch MIM pre-training on ImageNet-1K classification, using all the ViT-Tiny, ViT-Small, and ViT-base models, with +4.2%/+2.4%/+1.4% gains, respectively. Our TinyMIM model of base size achieves 52.2 mIoU in AE20K semantic segmentation, which is +4.1 higher than the MAE baseline. Our TinyMIM model of tiny size achieves 79.6% top-1 accuracy on ImageNet-1K image classification, which sets a new record for small vision models of the same size and computation budget. This strong performance suggests an alternative way for developing small vision Transformer models, that is, by exploring better training methods rather than introducing inductive biases into architectures as in most previous works. Code is available at https://github.com/OliverRensu/TinyMIM.
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Existing automated techniques for software documentation typically attempt to reason between two main sources of information: code and natural language. However, this reasoning process is often complicated by the lexical gap between more abstract natural language and more structured programming languages. One potential bridge for this gap is the Graphical User Interface (GUI), as GUIs inherently encode salient information about underlying program functionality into rich, pixel-based data representations. This paper offers one of the first comprehensive empirical investigations into the connection between GUIs and functional, natural language descriptions of software. First, we collect, analyze, and open source a large dataset of functional GUI descriptions consisting of 45,998 descriptions for 10,204 screenshots from popular Android applications. The descriptions were obtained from human labelers and underwent several quality control mechanisms. To gain insight into the representational potential of GUIs, we investigate the ability of four Neural Image Captioning models to predict natural language descriptions of varying granularity when provided a screenshot as input. We evaluate these models quantitatively, using common machine translation metrics, and qualitatively through a large-scale user study. Finally, we offer learned lessons and a discussion of the potential shown by multimodal models to enhance future techniques for automated software documentation.
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Text clustering and topic extraction are two important tasks in text mining. Usually, these two tasks are performed separately. For topic extraction to facilitate clustering, we can first project texts into a topic space and then perform a clustering algorithm to obtain clusters. To promote topic extraction by clustering, we can first obtain clusters with a clustering algorithm and then extract cluster-specific topics. However, this naive strategy ignores the fact that text clustering and topic extraction are strongly correlated and follow a chicken-and-egg relationship. Performing them separately fails to make them mutually benefit each other to achieve the best overall performance. In this paper, we propose an unsupervised text clustering and topic extraction framework (ClusTop) which integrates text clustering and topic extraction into a unified framework and can achieve high-quality clustering result and extract topics from each cluster simultaneously. Our framework includes four components: enhanced language model training, dimensionality reduction, clustering and topic extraction, where the enhanced language model can be viewed as a bridge between clustering and topic extraction. On one hand, it provides text embeddings with a strong cluster structure which facilitates effective text clustering; on the other hand, it pays high attention on the topic related words for topic extraction because of its self-attention architecture. Moreover, the training of enhanced language model is unsupervised. Experiments on two datasets demonstrate the effectiveness of our framework and provide benchmarks for different model combinations in this framework.
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Cognitive Computing (COC) aims to build highly cognitive machines with low computational resources that respond in real-time. However, scholarly literature shows varying research areas and various interpretations of COC. This calls for a cohesive architecture that delineates the nature of COC. We argue that if Herbert Simon considered the design science is the science of artificial, cognitive systems are the products of cognitive science or 'the newest science of the artificial'. Therefore, building a conceptual basis for COC is an essential step into prospective cognitive computing-based systems. This paper proposes an architecture of COC through analyzing the literature on COC using a myriad of statistical analysis methods. Then, we compare the statistical analysis results with previous qualitative analysis results to confirm our findings. The study also comprehensively surveys the recent research on COC to identify the state of the art and connect the advances in varied research disciplines in COC. The study found that there are three underlaying computing paradigms, Von-Neuman, Neuromorphic Engineering and Quantum Computing, that comprehensively complement the structure of cognitive computation. The research discuss possible applications and open research directions under the COC umbrella.
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Reading comprehension of legal text can be a particularly challenging task due to the length and complexity of legal clauses and a shortage of expert-annotated datasets. To address this challenge, we introduce the Merger Agreement Understanding Dataset (MAUD), an expert-annotated reading comprehension dataset based on the American Bar Association's 2021 Public Target Deal Points Study, with over 39,000 examples and over 47,000 total annotations. Our fine-tuned Transformer baselines show promising results, with models performing well above random on most questions. However, on a large subset of questions, there is still room for significant improvement. As the only expert-annotated merger agreement dataset, MAUD is valuable as a benchmark for both the legal profession and the NLP community.
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Robotic teleoperation is a key technology for a wide variety of applications. It allows sending robots instead of humans in remote, possibly dangerous locations while still using the human brain with its enormous knowledge and creativity, especially for solving unexpected problems. A main challenge in teleoperation consists of providing enough feedback to the human operator for situation awareness and thus create full immersion, as well as offering the operator suitable control interfaces to achieve efficient and robust task fulfillment. We present a bimanual telemanipulation system consisting of an anthropomorphic avatar robot and an operator station providing force and haptic feedback to the human operator. The avatar arms are controlled in Cartesian space with a direct mapping of the operator movements. The measured forces and torques on the avatar side are haptically displayed to the operator. We developed a predictive avatar model for limit avoidance which runs on the operator side, ensuring low latency. The system was successfully evaluated during the ANA Avatar XPRIZE competition semifinals. In addition, we performed in lab experiments and carried out a small user study with mostly untrained operators.
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Compared to regular cameras, Dynamic Vision Sensors or Event Cameras can output compact visual data based on a change in the intensity in each pixel location asynchronously. In this paper, we study the application of current image-based SLAM techniques to these novel sensors. To this end, the information in adaptively selected event windows is processed to form motion-compensated images. These images are then used to reconstruct the scene and estimate the 6-DOF pose of the camera. We also propose an inertial version of the event-only pipeline to assess its capabilities. We compare the results of different configurations of the proposed algorithm against the ground truth for sequences of two publicly available event datasets. We also compare the results of the proposed event-inertial pipeline with the state-of-the-art and show it can produce comparable or more accurate results provided the map estimate is reliable.
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