State-of-the-art 3D semantic segmentation models are trained on the off-the-shelf public benchmarks, but they often face the major challenge when these well-trained models are deployed to a new domain. In this paper, we propose an Active-and-Adaptive Segmentation (ADAS) baseline to enhance the weak cross-domain generalization ability of a well-trained 3D segmentation model, and bridge the point distribution gap between domains. Specifically, before the cross-domain adaptation stage begins, ADAS performs an active sampling operation to select a maximally-informative subset from both source and target domains for effective adaptation, reducing the adaptation difficulty under 3D scenarios. Benefiting from the rise of multi-modal 2D-3D datasets, ADAS utilizes a cross-modal attention-based feature fusion module that can extract a representative pair of image features and point features to achieve a bi-directional image-point feature interaction for better safe adaptation. Experimentally, ADAS is verified to be effective in many cross-domain settings including: 1) Unsupervised Domain Adaptation (UDA), which means that all samples from target domain are unlabeled; 2) Unsupervised Few-shot Domain Adaptation (UFDA) which means that only a few unlabeled samples are available in the unlabeled target domain; 3) Active Domain Adaptation (ADA) which means that the selected target samples by ADAS are manually annotated. Their results demonstrate that ADAS achieves a significant accuracy gain by easily coupling ADAS with self-training methods or off-the-shelf UDA works.
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Motion prediction is highly relevant to the perception of dynamic objects and static map elements in the scenarios of autonomous driving. In this work, we propose PIP, the first end-to-end Transformer-based framework which jointly and interactively performs online mapping, object detection and motion prediction. PIP leverages map queries, agent queries and mode queries to encode the instance-wise information of map elements, agents and motion intentions, respectively. Based on the unified query representation, a differentiable multi-task interaction scheme is proposed to exploit the correlation between perception and prediction. Even without human-annotated HD map or agent's historical tracking trajectory as guidance information, PIP realizes end-to-end multi-agent motion prediction and achieves better performance than tracking-based and HD-map-based methods. PIP provides comprehensive high-level information of the driving scene (vectorized static map and dynamic objects with motion information), and contributes to the downstream planning and control. Code and models will be released for facilitating further research.
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Long short-term memory (LSTM) is a type of powerful deep neural network that has been widely used in many sequence analysis and modeling applications. However, the large model size problem of LSTM networks make their practical deployment still very challenging, especially for the video recognition tasks that require high-dimensional input data. Aiming to overcome this limitation and fully unlock the potentials of LSTM models, in this paper we propose to perform algorithm and hardware co-design towards high-performance energy-efficient LSTM networks. At algorithm level, we propose to develop fully decomposed hierarchical Tucker (FDHT) structure-based LSTM, namely FDHT-LSTM, which enjoys ultra-low model complexity while still achieving high accuracy. In order to fully reap such attractive algorithmic benefit, we further develop the corresponding customized hardware architecture to support the efficient execution of the proposed FDHT-LSTM model. With the delicate design of memory access scheme, the complicated matrix transformation can be efficiently supported by the underlying hardware without any access conflict in an on-the-fly way. Our evaluation results show that both the proposed ultra-compact FDHT-LSTM models and the corresponding hardware accelerator achieve very high performance. Compared with the state-of-the-art compressed LSTM models, FDHT-LSTM enjoys both order-of-magnitude reduction in model size and significant accuracy improvement across different video recognition datasets. Meanwhile, compared with the state-of-the-art tensor decomposed model-oriented hardware TIE, our proposed FDHT-LSTM architecture achieves better performance in throughput, area efficiency and energy efficiency, respectively on LSTM-Youtube workload. For LSTM-UCF workload, our proposed design also outperforms TIE with higher throughput, higher energy efficiency and comparable area efficiency.
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Large language models (LLMs) have been shown to be able to perform new tasks based on a few demonstrations or natural language instructions. While these capabilities have led to widespread adoption, most LLMs are developed by resource-rich organizations and are frequently kept from the public. As a step towards democratizing this powerful technology, we present BLOOM, a 176B-parameter open-access language model designed and built thanks to a collaboration of hundreds of researchers. BLOOM is a decoder-only Transformer language model that was trained on the ROOTS corpus, a dataset comprising hundreds of sources in 46 natural and 13 programming languages (59 in total). We find that BLOOM achieves competitive performance on a wide variety of benchmarks, with stronger results after undergoing multitask prompted finetuning. To facilitate future research and applications using LLMs, we publicly release our models and code under the Responsible AI License.
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Human conversations of recommendation naturally involve the shift of interests which can align the recommendation actions and conversation process to make accurate recommendations with rich explanations. However, existing conversational recommendation systems (CRS) ignore the advantage of user interest shift in connecting recommendation and conversation, which leads to an ineffective loose coupling structure of CRS. To address this issue, by modeling the recommendation actions as recommendation paths in a knowledge graph (KG), we propose DICR (Dual Imitation for Conversational Recommendation), which designs a dual imitation to explicitly align the recommendation paths and user interest shift paths in a recommendation module and a conversation module, respectively. By exchanging alignment signals, DICR achieves bidirectional promotion between recommendation and conversation modules and generates high-quality responses with accurate recommendations and coherent explanations. Experiments demonstrate that DICR outperforms the state-of-the-art models on recommendation and conversation performance with automatic, human, and novel explainability metrics.
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Persona-based dialogue systems aim to generate consistent responses based on historical context and predefined persona. Unlike conventional dialogue generation, the persona-based dialogue needs to consider both dialogue context and persona, posing a challenge for coherent training. Specifically, this requires a delicate weight balance between context and persona. To achieve that, in this paper, we propose an effective framework with Persona-Adaptive Attention (PAA), which adaptively integrates the weights from the persona and context information via our designed attention. In addition, a dynamic masking mechanism is applied to the PAA to not only drop redundant information in context and persona but also serve as a regularization mechanism to avoid overfitting. Experimental results demonstrate the superiority of the proposed PAA framework compared to the strong baselines in both automatic and human evaluation. Moreover, the proposed PAA approach can perform equivalently well in a low-resource regime compared to models trained in a full-data setting, which achieve a similar result with only 20% to 30% of data compared to the larger models trained in the full-data setting. To fully exploit the effectiveness of our design, we designed several variants for handling the weighted information in different ways, showing the necessity and sufficiency of our weighting and masking designs.
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值得信赖的强化学习算法应有能力解决挑战性的现实问题,包括{Robustly}处理不确定性,满足{安全}的限制以避免灾难性的失败,以及在部署过程中{prencepentiming}以避免灾难性的失败}。这项研究旨在概述这些可信赖的强化学习的主要观点,即考虑其在鲁棒性,安全性和概括性上的内在脆弱性。特别是,我们给出严格的表述,对相应的方法进行分类,并讨论每个观点的基准。此外,我们提供了一个前景部分,以刺激有希望的未来方向,并简要讨论考虑人类反馈的外部漏洞。我们希望这项调查可以在统一的框架中将单独的研究汇合在一起,并促进强化学习的可信度。
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图形对比学习(GCL)已成为学习图形无监督表示的有效工具。关键思想是通过数据扩展最大化每个图的两个增强视图之间的一致性。现有的GCL模型主要集中在给定情况下的所有图表上应用\ textit {相同的增强策略}。但是,实际图通常不是单态,而是各种本质的抽象。即使在相同的情况下(例如,大分子和在线社区),不同的图形可能需要各种增强来执行有效的GCL。因此,盲目地增强所有图表而不考虑其个人特征可能会破坏GCL艺术的表现。 {a} u Mentigation(GPA),通过允许每个图选择自己的合适的增强操作来推进常规GCL。本质上,GPA根据其拓扑属性和节点属性通过可学习的增强选择器为每个图定制了量身定制的增强策略,该策略是插件模块,可以通过端到端的下游GCL型号有效地训练。来自不同类型和域的11个基准图的广泛实验证明了GPA与最先进的竞争对手的优势。此外,通过可视化不同类型的数据集中学习的增强分布,我们表明GPA可以有效地识别最合适的数据集每个图的增强基于其特征。
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由于NN模型的强大学习能力及其固有的高平行性,基于神经网络(NN)的方法已成为机器人运动计划的有吸引力的方法。尽管目前朝这个方向发展,但以直接和同时的方式对重要的顺序和空间信息的有效捕获和处理仍然相对较小。为了克服挑战并释放神经网络对运动计划任务的潜力,在本文中,我们提出了STP-NET,这是一个端到端的学习框架,可以充分提取并利用重要的时空信息来形成有效的神经信息运动计划者。通过将机器人的移动解释为视频剪辑,机器人运动计划被转换为视频预测任务,STP-NET可以在空间和时间上有效的方式执行。 STP-NET在不同的和看不见的环境之间进行了经验评估,表明,凭借近100%的准确性(又称成功率),STP-NET在计划速度和路径成本方面表现出非常有希望的性能。与现有的基于NN的运动计划者相比,STP-NET在2D随机森林,2D迷宫和3D随机森林环境中至少达到5倍,2.6倍和1.8倍的速度,速度较低。此外,STP-NET可以快速,同时计算多机手运动计划任务中的多个近乎最佳路径
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移情是一种自然体现在人类对话中的特征。从理论上讲,慈善反应的诞生是由于认知和情感之间有意识的对准和相互作用而产生的。但是,现有作品仅依赖于单一的情感方面或独立的认知和感情模型,从而限制了产生的反应的同理心能力。为此,基于常识性认知图和情感概念图,构建了涉及常识性和概念知识的构建,我们设计了一种两级策略,以使粗粒度(在上下文认知和上下文情绪状态之间)和细粒度(在每个特定之间)认知和相应的情感反应)认知和情感,以善解人意(案例)。广泛的实验表明,在自动和人类评估方面,案例的表现优于最先进的基线。我们的代码将发布。
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